Improve motion review and add motion search (#22253)

* implement motion search and motion previews

* tweaks

* fix merge issue

* fix copilot instructions

frigate/api/defs/tags.py

@@ -11,6 +11,7 @@ class Tags(Enum):
     classification = "Classification"
     logs = "Logs"
     media = "Media"
+    motion_search = "Motion Search"
     notifications = "Notifications"
     preview = "Preview"
     recordings = "Recordings"

frigate/api/fastapi_app.py

@@ -22,6 +22,7 @@ from frigate.api import (
     event,
     export,
     media,
+    motion_search,
     notification,
     preview,
     record,
@@ -135,6 +136,7 @@ def create_fastapi_app(
     app.include_router(export.router)
     app.include_router(event.router)
     app.include_router(media.router)
+    app.include_router(motion_search.router)
     app.include_router(record.router)
     app.include_router(debug_replay.router)
     # App Properties

frigate/api/motion_search.py

@@ -0,0 +1,292 @@
+"""Motion search API for detecting changes within a region of interest."""
+
+import logging
+from typing import Any, List, Optional
+
+from fastapi import APIRouter, Depends, Request
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel, Field
+
+from frigate.api.auth import require_camera_access
+from frigate.api.defs.tags import Tags
+from frigate.jobs.motion_search import (
+    cancel_motion_search_job,
+    get_motion_search_job,
+    start_motion_search_job,
+)
+from frigate.types import JobStatusTypesEnum
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(tags=[Tags.motion_search])
+
+
+class MotionSearchRequest(BaseModel):
+    """Request body for motion search."""
+
+    start_time: float = Field(description="Start timestamp for the search range")
+    end_time: float = Field(description="End timestamp for the search range")
+    polygon_points: List[List[float]] = Field(
+        description="List of [x, y] normalized coordinates (0-1) defining the ROI polygon"
+    )
+    threshold: int = Field(
+        default=30,
+        ge=1,
+        le=255,
+        description="Pixel difference threshold (1-255)",
+    )
+    min_area: float = Field(
+        default=5.0,
+        ge=0.1,
+        le=100.0,
+        description="Minimum change area as a percentage of the ROI",
+    )
+    frame_skip: int = Field(
+        default=5,
+        ge=1,
+        le=30,
+        description="Process every Nth frame (1=all frames, 5=every 5th frame)",
+    )
+    parallel: bool = Field(
+        default=False,
+        description="Enable parallel scanning across segments",
+    )
+    max_results: int = Field(
+        default=25,
+        ge=1,
+        le=200,
+        description="Maximum number of search results to return",
+    )
+
+
+class MotionSearchResult(BaseModel):
+    """A single search result with timestamp and change info."""
+
+    timestamp: float = Field(description="Timestamp where change was detected")
+    change_percentage: float = Field(description="Percentage of ROI area that changed")
+
+
+class MotionSearchMetricsResponse(BaseModel):
+    """Metrics collected during motion search execution."""
+
+    segments_scanned: int = 0
+    segments_processed: int = 0
+    metadata_inactive_segments: int = 0
+    heatmap_roi_skip_segments: int = 0
+    fallback_full_range_segments: int = 0
+    frames_decoded: int = 0
+    wall_time_seconds: float = 0.0
+    segments_with_errors: int = 0
+
+
+class MotionSearchStartResponse(BaseModel):
+    """Response when motion search job starts."""
+
+    success: bool
+    message: str
+    job_id: str
+
+
+class MotionSearchStatusResponse(BaseModel):
+    """Response containing job status and results."""
+
+    success: bool
+    message: str
+    status: str  # "queued", "running", "success", "failed", or "cancelled"
+    results: Optional[List[MotionSearchResult]] = None
+    total_frames_processed: Optional[int] = None
+    error_message: Optional[str] = None
+    metrics: Optional[MotionSearchMetricsResponse] = None
+
+
+@router.post(
+    "/{camera_name}/search/motion",
+    response_model=MotionSearchStartResponse,
+    dependencies=[Depends(require_camera_access)],
+    summary="Start motion search job",
+    description="""Starts an asynchronous search for significant motion changes within
+    a user-defined Region of Interest (ROI) over a specified time range. Returns a job_id
+    that can be used to poll for results.""",
+)
+async def start_motion_search(
+    request: Request,
+    camera_name: str,
+    body: MotionSearchRequest,
+):
+    """Start an async motion search job."""
+    config = request.app.frigate_config
+
+    if camera_name not in config.cameras:
+        return JSONResponse(
+            content={"success": False, "message": f"Camera {camera_name} not found"},
+            status_code=404,
+        )
+
+    # Validate polygon has at least 3 points
+    if len(body.polygon_points) < 3:
+        return JSONResponse(
+            content={
+                "success": False,
+                "message": "Polygon must have at least 3 points",
+            },
+            status_code=400,
+        )
+
+    # Validate time range
+    if body.start_time >= body.end_time:
+        return JSONResponse(
+            content={
+                "success": False,
+                "message": "Start time must be before end time",
+            },
+            status_code=400,
+        )
+
+    # Start the job using the jobs module
+    job_id = start_motion_search_job(
+        config=config,
+        camera_name=camera_name,
+        start_time=body.start_time,
+        end_time=body.end_time,
+        polygon_points=body.polygon_points,
+        threshold=body.threshold,
+        min_area=body.min_area,
+        frame_skip=body.frame_skip,
+        parallel=body.parallel,
+        max_results=body.max_results,
+    )
+
+    return JSONResponse(
+        content={
+            "success": True,
+            "message": "Search job started",
+            "job_id": job_id,
+        }
+    )
+
+
+@router.get(
+    "/{camera_name}/search/motion/{job_id}",
+    response_model=MotionSearchStatusResponse,
+    dependencies=[Depends(require_camera_access)],
+    summary="Get motion search job status",
+    description="Returns the status and results (if complete) of a motion search job.",
+)
+async def get_motion_search_status_endpoint(
+    request: Request,
+    camera_name: str,
+    job_id: str,
+):
+    """Get the status of a motion search job."""
+    config = request.app.frigate_config
+
+    if camera_name not in config.cameras:
+        return JSONResponse(
+            content={"success": False, "message": f"Camera {camera_name} not found"},
+            status_code=404,
+        )
+
+    job = get_motion_search_job(job_id)
+    if not job:
+        return JSONResponse(
+            content={"success": False, "message": "Job not found"},
+            status_code=404,
+        )
+
+    api_status = job.status
+
+    # Build response content
+    response_content: dict[str, Any] = {
+        "success": api_status != JobStatusTypesEnum.failed,
+        "status": api_status,
+    }
+
+    if api_status == JobStatusTypesEnum.failed:
+        response_content["message"] = job.error_message or "Search failed"
+        response_content["error_message"] = job.error_message
+    elif api_status == JobStatusTypesEnum.cancelled:
+        response_content["message"] = "Search cancelled"
+        response_content["total_frames_processed"] = job.total_frames_processed
+    elif api_status == JobStatusTypesEnum.success:
+        response_content["message"] = "Search complete"
+        if job.results:
+            response_content["results"] = job.results.get("results", [])
+            response_content["total_frames_processed"] = job.results.get(
+                "total_frames_processed", job.total_frames_processed
+            )
+        else:
+            response_content["results"] = []
+            response_content["total_frames_processed"] = job.total_frames_processed
+    else:
+        response_content["message"] = "Job processing"
+        response_content["total_frames_processed"] = job.total_frames_processed
+        # Include partial results if available (streaming)
+        if job.results:
+            response_content["results"] = job.results.get("results", [])
+            response_content["total_frames_processed"] = job.results.get(
+                "total_frames_processed", job.total_frames_processed
+            )
+
+    # Include metrics if available
+    if job.metrics:
+        response_content["metrics"] = job.metrics.to_dict()
+
+    return JSONResponse(content=response_content)
+
+
+@router.post(
+    "/{camera_name}/search/motion/{job_id}/cancel",
+    dependencies=[Depends(require_camera_access)],
+    summary="Cancel motion search job",
+    description="Cancels an active motion search job if it is still processing.",
+)
+async def cancel_motion_search_endpoint(
+    request: Request,
+    camera_name: str,
+    job_id: str,
+):
+    """Cancel an active motion search job."""
+    config = request.app.frigate_config
+
+    if camera_name not in config.cameras:
+        return JSONResponse(
+            content={"success": False, "message": f"Camera {camera_name} not found"},
+            status_code=404,
+        )
+
+    job = get_motion_search_job(job_id)
+    if not job:
+        return JSONResponse(
+            content={"success": False, "message": "Job not found"},
+            status_code=404,
+        )
+
+    # Check if already finished
+    api_status = job.status
+    if api_status not in (JobStatusTypesEnum.queued, JobStatusTypesEnum.running):
+        return JSONResponse(
+            content={
+                "success": True,
+                "message": "Job already finished",
+                "status": api_status,
+            }
+        )
+
+    # Request cancellation
+    cancelled = cancel_motion_search_job(job_id)
+    if cancelled:
+        return JSONResponse(
+            content={
+                "success": True,
+                "message": "Search cancelled",
+                "status": "cancelled",
+            }
+        )
+
+    return JSONResponse(
+        content={
+            "success": False,
+            "message": "Failed to cancel job",
+        },
+        status_code=500,
+    )

frigate/api/record.py

@@ -261,6 +261,7 @@ async def recordings(
             Recordings.segment_size,
             Recordings.motion,
             Recordings.objects,
+            Recordings.motion_heatmap,
             Recordings.duration,
         )
         .where(

frigate/app.py

@@ -51,6 +51,7 @@ from frigate.embeddings import EmbeddingProcess, EmbeddingsContext
 from frigate.events.audio import AudioProcessor
 from frigate.events.cleanup import EventCleanup
 from frigate.events.maintainer import EventProcessor
+from frigate.jobs.motion_search import stop_all_motion_search_jobs
 from frigate.log import _stop_logging
 from frigate.models import (
     Event,
@@ -599,6 +600,9 @@ class FrigateApp:
         # used by the docker healthcheck
         Path("/dev/shm/.frigate-is-stopping").touch()
 
+        # Cancel any running motion search jobs before setting stop_event
+        stop_all_motion_search_jobs()
+
         self.stop_event.set()
 
         # set an end_time on entries without an end_time before exiting

frigate/jobs/motion_search.py

@@ -0,0 +1,864 @@
+"""Motion search job management with background execution and parallel verification."""
+
+import logging
+import os
+import threading
+from concurrent.futures import Future, ThreadPoolExecutor, as_completed
+from dataclasses import asdict, dataclass, field
+from datetime import datetime
+from typing import Any, Optional
+
+import cv2
+import numpy as np
+
+from frigate.comms.inter_process import InterProcessRequestor
+from frigate.config import FrigateConfig
+from frigate.const import UPDATE_JOB_STATE
+from frigate.jobs.job import Job
+from frigate.jobs.manager import (
+    get_job_by_id,
+    set_current_job,
+)
+from frigate.models import Recordings
+from frigate.types import JobStatusTypesEnum
+
+logger = logging.getLogger(__name__)
+
+# Constants
+HEATMAP_GRID_SIZE = 16
+
+
+@dataclass
+class MotionSearchMetrics:
+    """Metrics collected during motion search execution."""
+
+    segments_scanned: int = 0
+    segments_processed: int = 0
+    metadata_inactive_segments: int = 0
+    heatmap_roi_skip_segments: int = 0
+    fallback_full_range_segments: int = 0
+    frames_decoded: int = 0
+    wall_time_seconds: float = 0.0
+    segments_with_errors: int = 0
+
+    def to_dict(self) -> dict[str, Any]:
+        """Convert to dictionary."""
+        return asdict(self)
+
+
+@dataclass
+class MotionSearchResult:
+    """A single search result with timestamp and change info."""
+
+    timestamp: float
+    change_percentage: float
+
+    def to_dict(self) -> dict[str, Any]:
+        """Convert to dictionary."""
+        return asdict(self)
+
+
+@dataclass
+class MotionSearchJob(Job):
+    """Job state for motion search operations."""
+
+    job_type: str = "motion_search"
+    camera: str = ""
+    start_time_range: float = 0.0
+    end_time_range: float = 0.0
+    polygon_points: list[list[float]] = field(default_factory=list)
+    threshold: int = 30
+    min_area: float = 5.0
+    frame_skip: int = 5
+    parallel: bool = False
+    max_results: int = 25
+
+    # Track progress
+    total_frames_processed: int = 0
+
+    # Metrics for observability
+    metrics: Optional[MotionSearchMetrics] = None
+
+    def to_dict(self) -> dict[str, Any]:
+        """Convert to dictionary for WebSocket transmission."""
+        d = asdict(self)
+        if self.metrics:
+            d["metrics"] = self.metrics.to_dict()
+        return d
+
+
+def create_polygon_mask(
+    polygon_points: list[list[float]], frame_width: int, frame_height: int
+) -> np.ndarray:
+    """Create a binary mask from normalized polygon coordinates."""
+    motion_points = np.array(
+        [[int(p[0] * frame_width), int(p[1] * frame_height)] for p in polygon_points],
+        dtype=np.int32,
+    )
+    mask = np.zeros((frame_height, frame_width), dtype=np.uint8)
+    cv2.fillPoly(mask, [motion_points], 255)
+    return mask
+
+
+def compute_roi_bbox_normalized(
+    polygon_points: list[list[float]],
+) -> tuple[float, float, float, float]:
+    """Compute the bounding box of the ROI in normalized coordinates (0-1).
+
+    Returns (x_min, y_min, x_max, y_max) in normalized coordinates.
+    """
+    if not polygon_points:
+        return (0.0, 0.0, 1.0, 1.0)
+
+    x_coords = [p[0] for p in polygon_points]
+    y_coords = [p[1] for p in polygon_points]
+    return (min(x_coords), min(y_coords), max(x_coords), max(y_coords))
+
+
+def heatmap_overlaps_roi(
+    heatmap: dict[str, int], roi_bbox: tuple[float, float, float, float]
+) -> bool:
+    """Check if a sparse motion heatmap has any overlap with the ROI bounding box.
+
+    Args:
+        heatmap: Sparse dict mapping cell index (str) to intensity (1-255).
+        roi_bbox: (x_min, y_min, x_max, y_max) in normalized coordinates (0-1).
+
+    Returns:
+        True if there is overlap (any active cell in the ROI region).
+    """
+    if not isinstance(heatmap, dict):
+        # Invalid heatmap, assume overlap to be safe
+        return True
+
+    x_min, y_min, x_max, y_max = roi_bbox
+
+    # Convert normalized coordinates to grid cells (0-15)
+    grid_x_min = max(0, int(x_min * HEATMAP_GRID_SIZE))
+    grid_y_min = max(0, int(y_min * HEATMAP_GRID_SIZE))
+    grid_x_max = min(HEATMAP_GRID_SIZE - 1, int(x_max * HEATMAP_GRID_SIZE))
+    grid_y_max = min(HEATMAP_GRID_SIZE - 1, int(y_max * HEATMAP_GRID_SIZE))
+
+    # Check each cell in the ROI bbox
+    for y in range(grid_y_min, grid_y_max + 1):
+        for x in range(grid_x_min, grid_x_max + 1):
+            idx = str(y * HEATMAP_GRID_SIZE + x)
+            if idx in heatmap:
+                return True
+
+    return False
+
+
+def segment_passes_activity_gate(recording: Recordings) -> bool:
+    """Check if a segment passes the activity gate.
+
+    Returns True if any of motion, objects, or regions is non-zero/non-null.
+    Returns True if all are null (old segments without data).
+    """
+    motion = recording.motion
+    objects = recording.objects
+    regions = recording.regions
+
+    # Old segments without metadata - pass through (conservative)
+    if motion is None and objects is None and regions is None:
+        return True
+
+    # Pass if any activity indicator is positive
+    return bool(motion) or bool(objects) or bool(regions)
+
+
+def segment_passes_heatmap_gate(
+    recording: Recordings, roi_bbox: tuple[float, float, float, float]
+) -> bool:
+    """Check if a segment passes the heatmap overlap gate.
+
+    Returns True if:
+    - No heatmap is stored (old segments).
+    - The heatmap overlaps with the ROI bbox.
+    """
+    heatmap = getattr(recording, "motion_heatmap", None)
+    if heatmap is None:
+        # No heatmap stored, fall back to activity gate
+        return True
+
+    return heatmap_overlaps_roi(heatmap, roi_bbox)
+
+
+class MotionSearchRunner(threading.Thread):
+    """Thread-based runner for motion search jobs with parallel verification."""
+
+    def __init__(
+        self,
+        job: MotionSearchJob,
+        config: FrigateConfig,
+        cancel_event: threading.Event,
+    ) -> None:
+        super().__init__(daemon=True, name=f"motion_search_{job.id}")
+        self.job = job
+        self.config = config
+        self.cancel_event = cancel_event
+        self.internal_stop_event = threading.Event()
+        self.requestor = InterProcessRequestor()
+        self.metrics = MotionSearchMetrics()
+        self.job.metrics = self.metrics
+
+        # Worker cap: min(4, cpu_count)
+        cpu_count = os.cpu_count() or 1
+        self.max_workers = min(4, cpu_count)
+
+    def run(self) -> None:
+        """Execute the motion search job."""
+        try:
+            self.job.status = JobStatusTypesEnum.running
+            self.job.start_time = datetime.now().timestamp()
+            self._broadcast_status()
+
+            results = self._execute_search()
+
+            if self.cancel_event.is_set():
+                self.job.status = JobStatusTypesEnum.cancelled
+            else:
+                self.job.status = JobStatusTypesEnum.success
+                self.job.results = {
+                    "results": [r.to_dict() for r in results],
+                    "total_frames_processed": self.job.total_frames_processed,
+                }
+
+            self.job.end_time = datetime.now().timestamp()
+            self.metrics.wall_time_seconds = self.job.end_time - self.job.start_time
+            self.job.metrics = self.metrics
+
+            logger.debug(
+                "Motion search job %s completed: status=%s, results=%d, frames=%d",
+                self.job.id,
+                self.job.status,
+                len(results),
+                self.job.total_frames_processed,
+            )
+            self._broadcast_status()
+
+        except Exception as e:
+            logger.exception("Motion search job %s failed: %s", self.job.id, e)
+            self.job.status = JobStatusTypesEnum.failed
+            self.job.error_message = str(e)
+            self.job.end_time = datetime.now().timestamp()
+            self.metrics.wall_time_seconds = self.job.end_time - (
+                self.job.start_time or 0
+            )
+            self.job.metrics = self.metrics
+            self._broadcast_status()
+
+        finally:
+            if self.requestor:
+                self.requestor.stop()
+
+    def _broadcast_status(self) -> None:
+        """Broadcast job status update via IPC to WebSocket subscribers."""
+        if self.job.status == JobStatusTypesEnum.running and self.job.start_time:
+            self.metrics.wall_time_seconds = (
+                datetime.now().timestamp() - self.job.start_time
+            )
+
+        try:
+            self.requestor.send_data(UPDATE_JOB_STATE, self.job.to_dict())
+        except Exception as e:
+            logger.warning("Failed to broadcast motion search status: %s", e)
+
+    def _should_stop(self) -> bool:
+        """Check if processing should stop due to cancellation or internal limits."""
+        return self.cancel_event.is_set() or self.internal_stop_event.is_set()
+
+    def _execute_search(self) -> list[MotionSearchResult]:
+        """Main search execution logic."""
+        camera_name = self.job.camera
+        camera_config = self.config.cameras.get(camera_name)
+        if not camera_config:
+            raise ValueError(f"Camera {camera_name} not found")
+
+        frame_width = camera_config.detect.width
+        frame_height = camera_config.detect.height
+
+        # Create polygon mask
+        polygon_mask = create_polygon_mask(
+            self.job.polygon_points, frame_width, frame_height
+        )
+
+        if np.count_nonzero(polygon_mask) == 0:
+            logger.warning("Polygon mask is empty for job %s", self.job.id)
+            return []
+
+        # Compute ROI bbox in normalized coordinates for heatmap gate
+        roi_bbox = compute_roi_bbox_normalized(self.job.polygon_points)
+
+        # Query recordings
+        recordings = list(
+            Recordings.select()
+            .where(
+                (
+                    Recordings.start_time.between(
+                        self.job.start_time_range, self.job.end_time_range
+                    )
+                )
+                | (
+                    Recordings.end_time.between(
+                        self.job.start_time_range, self.job.end_time_range
+                    )
+                )
+                | (
+                    (self.job.start_time_range > Recordings.start_time)
+                    & (self.job.end_time_range < Recordings.end_time)
+                )
+            )
+            .where(Recordings.camera == camera_name)
+            .order_by(Recordings.start_time.asc())
+        )
+
+        if not recordings:
+            logger.debug("No recordings found for motion search job %s", self.job.id)
+            return []
+
+        logger.debug(
+            "Motion search job %s: queried %d recording segments for camera %s "
+            "(range %.1f - %.1f)",
+            self.job.id,
+            len(recordings),
+            camera_name,
+            self.job.start_time_range,
+            self.job.end_time_range,
+        )
+
+        self.metrics.segments_scanned = len(recordings)
+
+        # Apply activity and heatmap gates
+        filtered_recordings = []
+        for recording in recordings:
+            if not segment_passes_activity_gate(recording):
+                self.metrics.metadata_inactive_segments += 1
+                self.metrics.segments_processed += 1
+                logger.debug(
+                    "Motion search job %s: segment %s skipped by activity gate "
+                    "(motion=%s, objects=%s, regions=%s)",
+                    self.job.id,
+                    recording.id,
+                    recording.motion,
+                    recording.objects,
+                    recording.regions,
+                )
+                continue
+            if not segment_passes_heatmap_gate(recording, roi_bbox):
+                self.metrics.heatmap_roi_skip_segments += 1
+                self.metrics.segments_processed += 1
+                logger.debug(
+                    "Motion search job %s: segment %s skipped by heatmap gate "
+                    "(heatmap present=%s, roi_bbox=%s)",
+                    self.job.id,
+                    recording.id,
+                    recording.motion_heatmap is not None,
+                    roi_bbox,
+                )
+                continue
+            filtered_recordings.append(recording)
+
+        self._broadcast_status()
+
+        # Fallback: if all segments were filtered out, scan all segments
+        # This allows motion search to find things the detector missed
+        if not filtered_recordings and recordings:
+            logger.info(
+                "All %d segments filtered by gates, falling back to full scan",
+                len(recordings),
+            )
+            self.metrics.fallback_full_range_segments = len(recordings)
+            filtered_recordings = recordings
+
+        logger.debug(
+            "Motion search job %s: %d/%d segments passed gates "
+            "(activity_skipped=%d, heatmap_skipped=%d)",
+            self.job.id,
+            len(filtered_recordings),
+            len(recordings),
+            self.metrics.metadata_inactive_segments,
+            self.metrics.heatmap_roi_skip_segments,
+        )
+
+        if self.job.parallel:
+            return self._search_motion_parallel(filtered_recordings, polygon_mask)
+
+        return self._search_motion_sequential(filtered_recordings, polygon_mask)
+
+    def _search_motion_parallel(
+        self,
+        recordings: list[Recordings],
+        polygon_mask: np.ndarray,
+    ) -> list[MotionSearchResult]:
+        """Search for motion in parallel across segments, streaming results."""
+        all_results: list[MotionSearchResult] = []
+        total_frames = 0
+        next_recording_idx_to_merge = 0
+
+        logger.debug(
+            "Motion search job %s: starting motion search with %d workers "
+            "across %d segments",
+            self.job.id,
+            self.max_workers,
+            len(recordings),
+        )
+
+        # Initialize partial results on the job so they stream to the frontend
+        self.job.results = {"results": [], "total_frames_processed": 0}
+
+        with ThreadPoolExecutor(max_workers=self.max_workers) as executor:
+            futures: dict[Future, int] = {}
+            completed_segments: dict[int, tuple[list[MotionSearchResult], int]] = {}
+
+            for idx, recording in enumerate(recordings):
+                if self._should_stop():
+                    break
+
+                future = executor.submit(
+                    self._process_recording_for_motion,
+                    recording.path,
+                    recording.start_time,
+                    recording.end_time,
+                    self.job.start_time_range,
+                    self.job.end_time_range,
+                    polygon_mask,
+                    self.job.threshold,
+                    self.job.min_area,
+                    self.job.frame_skip,
+                )
+                futures[future] = idx
+
+            for future in as_completed(futures):
+                if self._should_stop():
+                    # Cancel remaining futures
+                    for f in futures:
+                        f.cancel()
+                    break
+
+                recording_idx = futures[future]
+                recording = recordings[recording_idx]
+
+                try:
+                    results, frames = future.result()
+                    self.metrics.segments_processed += 1
+                    completed_segments[recording_idx] = (results, frames)
+
+                    while next_recording_idx_to_merge in completed_segments:
+                        segment_results, segment_frames = completed_segments.pop(
+                            next_recording_idx_to_merge
+                        )
+
+                        all_results.extend(segment_results)
+                        total_frames += segment_frames
+                        self.job.total_frames_processed = total_frames
+                        self.metrics.frames_decoded = total_frames
+
+                        if segment_results:
+                            deduped = self._deduplicate_results(all_results)
+                            self.job.results = {
+                                "results": [
+                                    r.to_dict() for r in deduped[: self.job.max_results]
+                                ],
+                                "total_frames_processed": total_frames,
+                            }
+
+                        self._broadcast_status()
+
+                        if segment_results and len(deduped) >= self.job.max_results:
+                            self.internal_stop_event.set()
+                            for pending_future in futures:
+                                pending_future.cancel()
+                            break
+
+                        next_recording_idx_to_merge += 1
+
+                    if self.internal_stop_event.is_set():
+                        break
+
+                except Exception as e:
+                    self.metrics.segments_processed += 1
+                    self.metrics.segments_with_errors += 1
+                    self._broadcast_status()
+                    logger.warning(
+                        "Error processing segment %s: %s",
+                        recording.path,
+                        e,
+                    )
+
+        self.job.total_frames_processed = total_frames
+        self.metrics.frames_decoded = total_frames
+
+        logger.debug(
+            "Motion search job %s: motion search complete, "
+            "found %d raw results, decoded %d frames, %d segment errors",
+            self.job.id,
+            len(all_results),
+            total_frames,
+            self.metrics.segments_with_errors,
+        )
+
+        # Sort and deduplicate results
+        all_results.sort(key=lambda x: x.timestamp)
+        return self._deduplicate_results(all_results)[: self.job.max_results]
+
+    def _search_motion_sequential(
+        self,
+        recordings: list[Recordings],
+        polygon_mask: np.ndarray,
+    ) -> list[MotionSearchResult]:
+        """Search for motion sequentially across segments, streaming results."""
+        all_results: list[MotionSearchResult] = []
+        total_frames = 0
+
+        logger.debug(
+            "Motion search job %s: starting sequential motion search across %d segments",
+            self.job.id,
+            len(recordings),
+        )
+
+        self.job.results = {"results": [], "total_frames_processed": 0}
+
+        for recording in recordings:
+            if self.cancel_event.is_set():
+                break
+
+            try:
+                results, frames = self._process_recording_for_motion(
+                    recording.path,
+                    recording.start_time,
+                    recording.end_time,
+                    self.job.start_time_range,
+                    self.job.end_time_range,
+                    polygon_mask,
+                    self.job.threshold,
+                    self.job.min_area,
+                    self.job.frame_skip,
+                )
+                all_results.extend(results)
+                total_frames += frames
+
+                self.job.total_frames_processed = total_frames
+                self.metrics.frames_decoded = total_frames
+                self.metrics.segments_processed += 1
+
+                if results:
+                    all_results.sort(key=lambda x: x.timestamp)
+                    deduped = self._deduplicate_results(all_results)[
+                        : self.job.max_results
+                    ]
+                    self.job.results = {
+                        "results": [r.to_dict() for r in deduped],
+                        "total_frames_processed": total_frames,
+                    }
+
+                self._broadcast_status()
+
+                if results and len(deduped) >= self.job.max_results:
+                    break
+
+            except Exception as e:
+                self.metrics.segments_processed += 1
+                self.metrics.segments_with_errors += 1
+                self._broadcast_status()
+                logger.warning("Error processing segment %s: %s", recording.path, e)
+
+        self.job.total_frames_processed = total_frames
+        self.metrics.frames_decoded = total_frames
+
+        logger.debug(
+            "Motion search job %s: sequential motion search complete, "
+            "found %d raw results, decoded %d frames, %d segment errors",
+            self.job.id,
+            len(all_results),
+            total_frames,
+            self.metrics.segments_with_errors,
+        )
+
+        all_results.sort(key=lambda x: x.timestamp)
+        return self._deduplicate_results(all_results)[: self.job.max_results]
+
+    def _deduplicate_results(
+        self, results: list[MotionSearchResult], min_gap: float = 1.0
+    ) -> list[MotionSearchResult]:
+        """Deduplicate results that are too close together."""
+        if not results:
+            return results
+
+        deduplicated: list[MotionSearchResult] = []
+        last_timestamp = 0.0
+
+        for result in results:
+            if result.timestamp - last_timestamp >= min_gap:
+                deduplicated.append(result)
+                last_timestamp = result.timestamp
+
+        return deduplicated
+
+    def _process_recording_for_motion(
+        self,
+        recording_path: str,
+        recording_start: float,
+        recording_end: float,
+        search_start: float,
+        search_end: float,
+        polygon_mask: np.ndarray,
+        threshold: int,
+        min_area: float,
+        frame_skip: int,
+    ) -> tuple[list[MotionSearchResult], int]:
+        """Process a single recording file for motion detection.
+
+        This method is designed to be called from a thread pool.
+
+        Args:
+            min_area: Minimum change area as a percentage of the ROI (0-100).
+        """
+        results: list[MotionSearchResult] = []
+        frames_processed = 0
+
+        if not os.path.exists(recording_path):
+            logger.warning("Recording file not found: %s", recording_path)
+            return results, frames_processed
+
+        cap = cv2.VideoCapture(recording_path)
+        if not cap.isOpened():
+            logger.error("Could not open recording: %s", recording_path)
+            return results, frames_processed
+
+        try:
+            fps = cap.get(cv2.CAP_PROP_FPS) or 30.0
+            total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
+            recording_duration = recording_end - recording_start
+
+            # Calculate frame range
+            start_offset = max(0, search_start - recording_start)
+            end_offset = min(recording_duration, search_end - recording_start)
+            start_frame = int(start_offset * fps)
+            end_frame = int(end_offset * fps)
+            start_frame = max(0, min(start_frame, total_frames - 1))
+            end_frame = max(0, min(end_frame, total_frames))
+
+            if start_frame >= end_frame:
+                return results, frames_processed
+
+            cap.set(cv2.CAP_PROP_POS_FRAMES, start_frame)
+
+            # Get ROI bounding box
+            roi_bbox = cv2.boundingRect(polygon_mask)
+            roi_x, roi_y, roi_w, roi_h = roi_bbox
+
+            prev_frame_gray = None
+            frame_step = max(frame_skip, 1)
+            frame_idx = start_frame
+
+            while frame_idx < end_frame:
+                if self._should_stop():
+                    break
+
+                ret, frame = cap.read()
+                if not ret:
+                    frame_idx += 1
+                    continue
+
+                if (frame_idx - start_frame) % frame_step != 0:
+                    frame_idx += 1
+                    continue
+
+                frames_processed += 1
+
+                gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
+
+                # Handle frame dimension changes
+                if gray.shape != polygon_mask.shape:
+                    resized_mask = cv2.resize(
+                        polygon_mask, (gray.shape[1], gray.shape[0]), cv2.INTER_NEAREST
+                    )
+                    current_bbox = cv2.boundingRect(resized_mask)
+                else:
+                    resized_mask = polygon_mask
+                    current_bbox = roi_bbox
+
+                roi_x, roi_y, roi_w, roi_h = current_bbox
+                cropped_gray = gray[roi_y : roi_y + roi_h, roi_x : roi_x + roi_w]
+                cropped_mask = resized_mask[
+                    roi_y : roi_y + roi_h, roi_x : roi_x + roi_w
+                ]
+
+                cropped_mask_area = np.count_nonzero(cropped_mask)
+                if cropped_mask_area == 0:
+                    frame_idx += 1
+                    continue
+
+                # Convert percentage to pixel count for this ROI
+                min_area_pixels = int((min_area / 100.0) * cropped_mask_area)
+
+                masked_gray = cv2.bitwise_and(
+                    cropped_gray, cropped_gray, mask=cropped_mask
+                )
+
+                if prev_frame_gray is not None:
+                    diff = cv2.absdiff(prev_frame_gray, masked_gray)
+                    diff_blurred = cv2.GaussianBlur(diff, (3, 3), 0)
+                    _, thresh = cv2.threshold(
+                        diff_blurred, threshold, 255, cv2.THRESH_BINARY
+                    )
+                    thresh_dilated = cv2.dilate(thresh, None, iterations=1)
+                    thresh_masked = cv2.bitwise_and(
+                        thresh_dilated, thresh_dilated, mask=cropped_mask
+                    )
+
+                    change_pixels = cv2.countNonZero(thresh_masked)
+                    if change_pixels > min_area_pixels:
+                        contours, _ = cv2.findContours(
+                            thresh_masked, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE
+                        )
+                        total_change_area = sum(
+                            cv2.contourArea(c)
+                            for c in contours
+                            if cv2.contourArea(c) >= min_area_pixels
+                        )
+                        if total_change_area > 0:
+                            frame_time_offset = (frame_idx - start_frame) / fps
+                            timestamp = (
+                                recording_start + start_offset + frame_time_offset
+                            )
+                            change_percentage = (
+                                total_change_area / cropped_mask_area
+                            ) * 100
+                            results.append(
+                                MotionSearchResult(
+                                    timestamp=timestamp,
+                                    change_percentage=round(change_percentage, 2),
+                                )
+                            )
+
+                prev_frame_gray = masked_gray
+                frame_idx += 1
+
+        finally:
+            cap.release()
+
+        logger.debug(
+            "Motion search segment complete: %s, %d frames processed, %d results found",
+            recording_path,
+            frames_processed,
+            len(results),
+        )
+        return results, frames_processed
+
+
+# Module-level state for managing per-camera jobs
+_motion_search_jobs: dict[str, tuple[MotionSearchJob, threading.Event]] = {}
+_jobs_lock = threading.Lock()
+
+
+def stop_all_motion_search_jobs() -> None:
+    """Cancel all running motion search jobs for clean shutdown."""
+    with _jobs_lock:
+        for job_id, (job, cancel_event) in _motion_search_jobs.items():
+            if job.status in (JobStatusTypesEnum.queued, JobStatusTypesEnum.running):
+                cancel_event.set()
+                logger.debug("Signalling motion search job %s to stop", job_id)
+
+
+def start_motion_search_job(
+    config: FrigateConfig,
+    camera_name: str,
+    start_time: float,
+    end_time: float,
+    polygon_points: list[list[float]],
+    threshold: int = 30,
+    min_area: float = 5.0,
+    frame_skip: int = 5,
+    parallel: bool = False,
+    max_results: int = 25,
+) -> str:
+    """Start a new motion search job.
+
+    Returns the job ID.
+    """
+    job = MotionSearchJob(
+        camera=camera_name,
+        start_time_range=start_time,
+        end_time_range=end_time,
+        polygon_points=polygon_points,
+        threshold=threshold,
+        min_area=min_area,
+        frame_skip=frame_skip,
+        parallel=parallel,
+        max_results=max_results,
+    )
+
+    cancel_event = threading.Event()
+
+    with _jobs_lock:
+        _motion_search_jobs[job.id] = (job, cancel_event)
+
+    set_current_job(job)
+
+    runner = MotionSearchRunner(job, config, cancel_event)
+    runner.start()
+
+    logger.debug(
+        "Started motion search job %s for camera %s: "
+        "time_range=%.1f-%.1f, threshold=%d, min_area=%.1f%%, "
+        "frame_skip=%d, parallel=%s, max_results=%d, polygon_points=%d vertices",
+        job.id,
+        camera_name,
+        start_time,
+        end_time,
+        threshold,
+        min_area,
+        frame_skip,
+        parallel,
+        max_results,
+        len(polygon_points),
+    )
+    return job.id
+
+
+def get_motion_search_job(job_id: str) -> Optional[MotionSearchJob]:
+    """Get a motion search job by ID."""
+    with _jobs_lock:
+        job_entry = _motion_search_jobs.get(job_id)
+        if job_entry:
+            return job_entry[0]
+    # Check completed jobs via manager
+    return get_job_by_id("motion_search", job_id)
+
+
+def cancel_motion_search_job(job_id: str) -> bool:
+    """Cancel a motion search job.
+
+    Returns True if cancellation was initiated, False if job not found.
+    """
+    with _jobs_lock:
+        job_entry = _motion_search_jobs.get(job_id)
+        if not job_entry:
+            return False
+
+        job, cancel_event = job_entry
+
+        if job.status not in (JobStatusTypesEnum.queued, JobStatusTypesEnum.running):
+            # Already finished
+            return True
+
+        cancel_event.set()
+        job.status = JobStatusTypesEnum.cancelled
+        job_payload = job.to_dict()
+        logger.info("Cancelled motion search job %s", job_id)
+
+    requestor: Optional[InterProcessRequestor] = None
+    try:
+        requestor = InterProcessRequestor()
+        requestor.send_data(UPDATE_JOB_STATE, job_payload)
+    except Exception as e:
+        logger.warning(
+            "Failed to broadcast cancelled motion search job %s: %s", job_id, e
+        )
+    finally:
+        if requestor:
+            requestor.stop()
+
+    return True

frigate/models.py

@@ -78,6 +78,7 @@ class Recordings(Model):
     dBFS = IntegerField(null=True)
     segment_size = FloatField(default=0)  # this should be stored as MB
     regions = IntegerField(null=True)
+    motion_heatmap = JSONField(null=True)  # 16x16 grid, 256 values (0-255)
 
 
 class ExportCase(Model):

frigate/record/maintainer.py

@@ -50,11 +50,13 @@ class SegmentInfo:
         active_object_count: int,
         region_count: int,
         average_dBFS: int,
+        motion_heatmap: dict[str, int] | None = None,
     ) -> None:
         self.motion_count = motion_count
         self.active_object_count = active_object_count
         self.region_count = region_count
         self.average_dBFS = average_dBFS
+        self.motion_heatmap = motion_heatmap
 
     def should_discard_segment(self, retain_mode: RetainModeEnum) -> bool:
         keep = False
@@ -454,6 +456,59 @@ class RecordingMaintainer(threading.Thread):
             if end_time < retain_cutoff:
                 self.drop_segment(cache_path)
 
+    def _compute_motion_heatmap(
+        self, camera: str, motion_boxes: list[tuple[int, int, int, int]]
+    ) -> dict[str, int] | None:
+        """Compute a 16x16 motion intensity heatmap from motion boxes.
+
+        Returns a sparse dict mapping cell index (as string) to intensity (1-255).
+        Only cells with motion are included.
+
+        Args:
+            camera: Camera name to get detect dimensions from.
+            motion_boxes: List of (x1, y1, x2, y2) pixel coordinates.
+
+        Returns:
+            Sparse dict like {"45": 3, "46": 5}, or None if no boxes.
+        """
+        if not motion_boxes:
+            return None
+
+        camera_config = self.config.cameras.get(camera)
+        if not camera_config:
+            return None
+
+        frame_width = camera_config.detect.width
+        frame_height = camera_config.detect.height
+
+        if frame_width <= 0 or frame_height <= 0:
+            return None
+
+        GRID_SIZE = 16
+        counts: dict[int, int] = {}
+
+        for box in motion_boxes:
+            if len(box) < 4:
+                continue
+            x1, y1, x2, y2 = box
+
+            # Convert pixel coordinates to grid cells
+            grid_x1 = max(0, int((x1 / frame_width) * GRID_SIZE))
+            grid_y1 = max(0, int((y1 / frame_height) * GRID_SIZE))
+            grid_x2 = min(GRID_SIZE - 1, int((x2 / frame_width) * GRID_SIZE))
+            grid_y2 = min(GRID_SIZE - 1, int((y2 / frame_height) * GRID_SIZE))
+
+            for y in range(grid_y1, grid_y2 + 1):
+                for x in range(grid_x1, grid_x2 + 1):
+                    idx = y * GRID_SIZE + x
+                    counts[idx] = min(255, counts.get(idx, 0) + 1)
+
+        if not counts:
+            return None
+
+        # Convert to string keys for JSON storage
+        return {str(k): v for k, v in counts.items()}
+
     def segment_stats(
         self, camera: str, start_time: datetime.datetime, end_time: datetime.datetime
     ) -> SegmentInfo:
@@ -461,6 +516,8 @@ class RecordingMaintainer(threading.Thread):
         active_count = 0
         region_count = 0
         motion_count = 0
+        all_motion_boxes: list[tuple[int, int, int, int]] = []
+
         for frame in self.object_recordings_info[camera]:
             # frame is after end time of segment
             if frame[0] > end_time.timestamp():
@@ -479,6 +536,8 @@ class RecordingMaintainer(threading.Thread):
             )
             motion_count += len(frame[2])
             region_count += len(frame[3])
+            # Collect motion boxes for heatmap computation
+            all_motion_boxes.extend(frame[2])
 
         audio_values = []
         for frame in self.audio_recordings_info[camera]:
@@ -498,8 +557,14 @@ class RecordingMaintainer(threading.Thread):
 
         average_dBFS = 0 if not audio_values else np.average(audio_values)
 
+        motion_heatmap = self._compute_motion_heatmap(camera, all_motion_boxes)
+
         return SegmentInfo(
-            motion_count, active_count, region_count, round(average_dBFS)
+            motion_count,
+            active_count,
+            region_count,
+            round(average_dBFS),
+            motion_heatmap,
         )
 
     async def move_segment(
@@ -590,6 +655,7 @@ class RecordingMaintainer(threading.Thread):
                     Recordings.regions.name: segment_info.region_count,
                     Recordings.dBFS.name: segment_info.average_dBFS,
                     Recordings.segment_size.name: segment_size,
+                    Recordings.motion_heatmap.name: segment_info.motion_heatmap,
                 }
         except Exception as e:
             logger.error(f"Unable to store recording segment {cache_path}")

migrations/035_add_motion_heatmap.py

@@ -0,0 +1,34 @@
+"""Peewee migrations -- 035_add_motion_heatmap.py.
+
+Some examples (model - class or model name)::
+
+    > Model = migrator.orm['model_name']            # Return model in current state by name
+
+    > migrator.sql(sql)                             # Run custom SQL
+    > migrator.python(func, *args, **kwargs)        # Run python code
+    > migrator.create_model(Model)                  # Create a model (could be used as decorator)
+    > migrator.remove_model(model, cascade=True)    # Remove a model
+    > migrator.add_fields(model, **fields)          # Add fields to a model
+    > migrator.change_fields(model, **fields)       # Change fields
+    > migrator.remove_fields(model, *field_names, cascade=True)
+    > migrator.rename_field(model, old_field_name, new_field_name)
+    > migrator.rename_table(model, new_table_name)
+    > migrator.add_index(model, *col_names, unique=False)
+    > migrator.drop_index(model, *col_names)
+    > migrator.add_not_null(model, *field_names)
+    > migrator.drop_not_null(model, *field_names)
+    > migrator.add_default(model, field_name, default)
+
+"""
+
+import peewee as pw
+
+SQL = pw.SQL
+
+
+def migrate(migrator, database, fake=False, **kwargs):
+    migrator.sql('ALTER TABLE "recordings" ADD COLUMN "motion_heatmap" TEXT NULL')
+
+
+def rollback(migrator, database, fake=False, **kwargs):
+    pass

web/package-lock.json

@@ -22,6 +22,7 @@
         "@radix-ui/react-hover-card": "^1.1.6",
         "@radix-ui/react-label": "^2.1.2",
         "@radix-ui/react-popover": "^1.1.6",
+        "@radix-ui/react-progress": "^1.1.8",
         "@radix-ui/react-radio-group": "^1.2.3",
         "@radix-ui/react-scroll-area": "^1.2.3",
         "@radix-ui/react-select": "^2.1.6",
@@ -2922,6 +2923,68 @@
         }
       }
     },
+    "node_modules/@radix-ui/react-progress": {
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/@radix-ui/react-progress/-/react-progress-1.1.8.tgz",
+      "integrity": "sha512-+gISHcSPUJ7ktBy9RnTqbdKW78bcGke3t6taawyZ71pio1JewwGSJizycs7rLhGTvMJYCQB1DBK4KQsxs7U8dA==",
+      "license": "MIT",
+      "dependencies": {
+        "@radix-ui/react-context": "1.1.3",
+        "@radix-ui/react-primitive": "2.1.4"
+      },
+      "peerDependencies": {
+        "@types/react": "*",
+        "@types/react-dom": "*",
+        "react": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@radix-ui/react-progress/node_modules/@radix-ui/react-context": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@radix-ui/react-context/-/react-context-1.1.3.tgz",
+      "integrity": "sha512-ieIFACdMpYfMEjF0rEf5KLvfVyIkOz6PDGyNnP+u+4xQ6jny3VCgA4OgXOwNx2aUkxn8zx9fiVcM8CfFYv9Lxw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@types/react": "*",
+        "react": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@radix-ui/react-progress/node_modules/@radix-ui/react-primitive": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@radix-ui/react-primitive/-/react-primitive-2.1.4.tgz",
+      "integrity": "sha512-9hQc4+GNVtJAIEPEqlYqW5RiYdrr8ea5XQ0ZOnD6fgru+83kqT15mq2OCcbe8KnjRZl5vF3ks69AKz3kh1jrhg==",
+      "license": "MIT",
+      "dependencies": {
+        "@radix-ui/react-slot": "1.2.4"
+      },
+      "peerDependencies": {
+        "@types/react": "*",
+        "@types/react-dom": "*",
+        "react": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "@types/react-dom": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@radix-ui/react-radio-group": {
       "version": "1.3.8",
       "resolved": "https://registry.npmjs.org/@radix-ui/react-radio-group/-/react-radio-group-1.3.8.tgz",

web/package.json

@@ -28,6 +28,7 @@
     "@radix-ui/react-hover-card": "^1.1.6",
     "@radix-ui/react-label": "^2.1.2",
     "@radix-ui/react-popover": "^1.1.6",
+    "@radix-ui/react-progress": "^1.1.8",
     "@radix-ui/react-radio-group": "^1.2.3",
     "@radix-ui/react-scroll-area": "^1.2.3",
     "@radix-ui/react-select": "^2.1.6",

web/public/locales/en/views/events.json

@@ -61,5 +61,25 @@
   "detected": "detected",
   "normalActivity": "Normal",
   "needsReview": "Needs review",
-  "securityConcern": "Security concern"
+  "securityConcern": "Security concern",
+  "motionSearch": {
+    "menuItem": "Motion search",
+    "openMenu": "Camera options"
+  },
+  "motionPreviews": {
+    "menuItem": "View motion previews",
+    "title": "Motion previews: {{camera}}",
+    "mobileSettingsTitle": "Motion Preview Settings",
+    "mobileSettingsDesc": "Adjust playback speed and dimming, and choose a date to review motion-only clips.",
+    "dim": "Dim",
+    "dimAria": "Adjust dimming intensity",
+    "dimDesc": "Increase dimming to increase motion area visibility.",
+    "speed": "Speed",
+    "speedAria": "Select preview playback speed",
+    "speedDesc": "Choose how quickly preview clips play.",
+    "back": "Back",
+    "empty": "No previews available",
+    "noPreview": "Preview unavailable",
+    "seekAria": "Seek {{camera}} player to {{time}}"
+  }
 }

web/public/locales/en/views/motionSearch.json

@@ -0,0 +1,75 @@
+{
+  "documentTitle": "Motion Search - Frigate",
+  "title": "Motion Search",
+  "description": "Draw a polygon to define the region of interest, and specify a time range to search for motion changes within that region.",
+  "selectCamera": "Motion Search is loading",
+  "startSearch": "Start Search",
+  "searchStarted": "Search started",
+  "searchCancelled": "Search cancelled",
+  "cancelSearch": "Cancel",
+  "searching": "Search in progress.",
+  "searchComplete": "Search complete",
+  "noResultsYet": "Run a search to find motion changes in the selected region",
+  "noChangesFound": "No pixel changes detected in the selected region",
+  "changesFound_one": "Found {{count}} motion change",
+  "changesFound_other": "Found {{count}} motion changes",
+  "framesProcessed": "{{count}} frames processed",
+  "jumpToTime": "Jump to this time",
+  "results": "Results",
+  "showSegmentHeatmap": "Heatmap",
+  "newSearch": "New Search",
+  "clearResults": "Clear Results",
+  "clearROI": "Clear polygon",
+  "polygonControls": {
+    "points_one": "{{count}} point",
+    "points_other": "{{count}} points",
+    "undo": "Undo last point",
+    "reset": "Reset polygon"
+  },
+  "motionHeatmapLabel": "Motion Heatmap",
+  "dialog": {
+    "title": "Motion Search",
+    "cameraLabel": "Camera",
+    "previewAlt": "Camera preview for {{camera}}"
+  },
+  "timeRange": {
+    "title": "Search Range",
+    "start": "Start time",
+    "end": "End time"
+  },
+  "settings": {
+    "title": "Search Settings",
+    "parallelMode": "Parallel mode",
+    "parallelModeDesc": "Scan multiple recording segments at the same time (faster, but significantly more CPU intensive)",
+    "threshold": "Sensitivity Threshold",
+    "thresholdDesc": "Lower values detect smaller changes (1-255)",
+    "minArea": "Minimum Change Area",
+    "minAreaDesc": "Minimum percentage of the region of interest that must change to be considered significant",
+    "frameSkip": "Frame Skip",
+    "frameSkipDesc": "Process every Nth frame. Set this to your camera's frame rate to process one frame per second (e.g. 5 for a 5 FPS camera, 30 for a 30 FPS camera). Higher values will be faster, but may miss short motion events.",
+    "maxResults": "Maximum Results",
+    "maxResultsDesc": "Stop after this many matching timestamps"
+  },
+  "errors": {
+    "noCamera": "Please select a camera",
+    "noROI": "Please draw a region of interest",
+    "noTimeRange": "Please select a time range",
+    "invalidTimeRange": "End time must be after start time",
+    "searchFailed": "Search failed: {{message}}",
+    "polygonTooSmall": "Polygon must have at least 3 points",
+    "unknown": "Unknown error"
+  },
+  "changePercentage": "{{percentage}}% changed",
+  "metrics": {
+    "title": "Search Metrics",
+    "segmentsScanned": "Segments scanned",
+    "segmentsProcessed": "Processed",
+    "segmentsSkippedInactive": "Skipped (no activity)",
+    "segmentsSkippedHeatmap": "Skipped (no ROI overlap)",
+    "fallbackFullRange": "Fallback full-range scan",
+    "framesDecoded": "Frames decoded",
+    "wallTime": "Search time",
+    "segmentErrors": "Segment errors",
+    "seconds": "{{seconds}}s"
+  }
+}

web/src/components/player/HlsVideoPlayer.tsx

@@ -1,5 +1,6 @@
 import {
   MutableRefObject,
+  ReactNode,
   useCallback,
   useEffect,
   useRef,
@@ -57,6 +58,7 @@ type HlsVideoPlayerProps = {
   isDetailMode?: boolean;
   camera?: string;
   currentTimeOverride?: number;
+  transformedOverlay?: ReactNode;
 };
 
 export default function HlsVideoPlayer({
@@ -81,6 +83,7 @@ export default function HlsVideoPlayer({
   isDetailMode = false,
   camera,
   currentTimeOverride,
+  transformedOverlay,
 }: HlsVideoPlayerProps) {
   const { t } = useTranslation("components/player");
   const { data: config } = useSWR<FrigateConfig>("config");
@@ -350,157 +353,162 @@ export default function HlsVideoPlayer({
           height: isMobile ? "100%" : undefined,
         }}
       >
-        {isDetailMode &&
+        <div className="relative size-full">
-          camera &&
+          {transformedOverlay}
-          currentTime &&
+          {isDetailMode &&
-          loadedMetadata &&
+            camera &&
-          videoDimensions.width > 0 &&
+            currentTime &&
-          videoDimensions.height > 0 && (
+            loadedMetadata &&
-            <div
+            videoDimensions.width > 0 &&
-              className={cn(
+            videoDimensions.height > 0 && (
-                "absolute inset-0 z-50",
+              <div
-                isDesktop
+                className={cn(
-                  ? "size-full"
+                  "absolute inset-0 z-50",
-                  : "mx-auto flex items-center justify-center portrait:max-h-[50dvh]",
+                  isDesktop
-              )}
+                    ? "size-full"
-              style={{
+                    : "mx-auto flex items-center justify-center portrait:max-h-[50dvh]",
-                aspectRatio: `${videoDimensions.width} / ${videoDimensions.height}`,
+                )}
-              }}
+                style={{
-            >
+                  aspectRatio: `${videoDimensions.width} / ${videoDimensions.height}`,
-              <ObjectTrackOverlay
-                key={`overlay-${currentTime}`}
-                camera={camera}
-                showBoundingBoxes={!isPlaying}
-                currentTime={currentTime}
-                videoWidth={videoDimensions.width}
-                videoHeight={videoDimensions.height}
-                className="absolute inset-0 z-10"
-                onSeekToTime={(timestamp, play) => {
-                  if (onSeekToTime) {
-                    onSeekToTime(timestamp, play);
-                  }
                 }}
-              />
+              >
-            </div>
+                <ObjectTrackOverlay
-          )}
+                  key={`overlay-${currentTime}`}
-        <video
+                  camera={camera}
-          ref={videoRef}
+                  showBoundingBoxes={!isPlaying}
-          className={`size-full rounded-lg bg-black md:rounded-2xl ${loadedMetadata ? "" : "invisible"} cursor-pointer`}
+                  currentTime={currentTime}
-          preload="auto"
+                  videoWidth={videoDimensions.width}
-          autoPlay
+                  videoHeight={videoDimensions.height}
-          controls={!frigateControls}
+                  className="absolute inset-0 z-10"
-          playsInline
+                  onSeekToTime={(timestamp, play) => {
-          muted={muted}
+                    if (onSeekToTime) {
-          onClick={
+                      onSeekToTime(timestamp, play);
-            isDesktop
+                    }
-              ? () => {
+                  }}
-                  if (zoomScale == 1.0) onPlayPause(!isPlaying);
+                />
-                }
+              </div>
-              : undefined
+            )}
-          }
+          <video
-          onVolumeChange={() => {
+            ref={videoRef}
-            setVolume(videoRef.current?.volume ?? 1.0, true);
+            className={`size-full rounded-lg bg-black md:rounded-2xl ${loadedMetadata ? "" : "invisible"} cursor-pointer`}
-            if (!frigateControls) {
+            preload="auto"
-              setMuted(videoRef.current?.muted);
+            autoPlay
-            }
+            controls={!frigateControls}
-          }}
+            playsInline
-          onPlay={() => {
+            muted={muted}
-            setIsPlaying(true);
+            onClick={
-
+              isDesktop
-            if (isMobile) {
+                ? () => {
-              setControls(true);
+                    if (zoomScale == 1.0) onPlayPause(!isPlaying);
-              setMobileCtrlTimeout(setTimeout(() => setControls(false), 4000));
-            }
-          }}
-          onPlaying={onPlaying}
-          onPause={() => {
-            setIsPlaying(false);
-            clearTimeout(bufferTimeout);
-
-            if (isMobile && mobileCtrlTimeout) {
-              clearTimeout(mobileCtrlTimeout);
-            }
-          }}
-          onWaiting={() => {
-            if (onError != undefined) {
-              if (videoRef.current?.paused) {
-                return;
-              }
-
-              setBufferTimeout(
-                setTimeout(() => {
-                  if (
-                    document.visibilityState === "visible" &&
-                    videoRef.current
-                  ) {
-                    onError("stalled");
                   }
-                }, 3000),
+                : undefined
-              );
             }
-          }}
+            onVolumeChange={() => {
-          onProgress={() => {
+              setVolume(videoRef.current?.volume ?? 1.0, true);
-            if (onError != undefined) {
+              if (!frigateControls) {
-              if (videoRef.current?.paused) {
+                setMuted(videoRef.current?.muted);
+              }
+            }}
+            onPlay={() => {
+              setIsPlaying(true);
+
+              if (isMobile) {
+                setControls(true);
+                setMobileCtrlTimeout(
+                  setTimeout(() => setControls(false), 4000),
+                );
+              }
+            }}
+            onPlaying={onPlaying}
+            onPause={() => {
+              setIsPlaying(false);
+              clearTimeout(bufferTimeout);
+
+              if (isMobile && mobileCtrlTimeout) {
+                clearTimeout(mobileCtrlTimeout);
+              }
+            }}
+            onWaiting={() => {
+              if (onError != undefined) {
+                if (videoRef.current?.paused) {
+                  return;
+                }
+
+                setBufferTimeout(
+                  setTimeout(() => {
+                    if (
+                      document.visibilityState === "visible" &&
+                      videoRef.current
+                    ) {
+                      onError("stalled");
+                    }
+                  }, 3000),
+                );
+              }
+            }}
+            onProgress={() => {
+              if (onError != undefined) {
+                if (videoRef.current?.paused) {
+                  return;
+                }
+
+                if (bufferTimeout) {
+                  clearTimeout(bufferTimeout);
+                  setBufferTimeout(undefined);
+                }
+              }
+            }}
+            onTimeUpdate={() => {
+              if (!onTimeUpdate) {
                 return;
               }
 
-              if (bufferTimeout) {
+              const frameTime = getVideoTime();
-                clearTimeout(bufferTimeout);
+
-                setBufferTimeout(undefined);
+              if (frameTime) {
+                onTimeUpdate(frameTime);
               }
-            }
+            }}
-          }}
+            onLoadedData={() => {
-          onTimeUpdate={() => {
+              onPlayerLoaded?.();
-            if (!onTimeUpdate) {
+              handleLoadedMetadata();
-              return;
-            }
 
-            const frameTime = getVideoTime();
+              if (videoRef.current) {
+                if (playbackRate) {
+                  videoRef.current.playbackRate = playbackRate;
+                }
 
-            if (frameTime) {
+                if (volume) {
-              onTimeUpdate(frameTime);
+                  videoRef.current.volume = volume;
-            }
+                }
-          }}
-          onLoadedData={() => {
-            onPlayerLoaded?.();
-            handleLoadedMetadata();
-
-            if (videoRef.current) {
-              if (playbackRate) {
-                videoRef.current.playbackRate = playbackRate;
               }
-
+            }}
-              if (volume) {
+            onEnded={() => {
-                videoRef.current.volume = volume;
+              if (onClipEnded) {
+                onClipEnded(getVideoTime() ?? 0);
               }
-            }
+            }}
-          }}
+            onError={(e) => {
-          onEnded={() => {
+              if (
-            if (onClipEnded) {
+                !hlsRef.current &&
-              onClipEnded(getVideoTime() ?? 0);
-            }
-          }}
-          onError={(e) => {
-            if (
-              !hlsRef.current &&
-              // @ts-expect-error code does exist
-              unsupportedErrorCodes.includes(e.target.error.code) &&
-              videoRef.current
-            ) {
-              setLoadedMetadata(false);
-              setUseHlsCompat(true);
-            } else {
-              toast.error(
                 // @ts-expect-error code does exist
-                `Failed to play recordings (error ${e.target.error.code}): ${e.target.error.message}`,
+                unsupportedErrorCodes.includes(e.target.error.code) &&
-                {
+                videoRef.current
-                  position: "top-center",
+              ) {
-                },
+                setLoadedMetadata(false);
-              );
+                setUseHlsCompat(true);
-            }
+              } else {
-          }}
+                toast.error(
-        />
+                  // @ts-expect-error code does exist
+                  `Failed to play recordings (error ${e.target.error.code}): ${e.target.error.message}`,
+                  {
+                    position: "top-center",
+                  },
+                );
+              }
+            }}
+          />
+        </div>
       </TransformComponent>
     </TransformWrapper>
   );

web/src/components/player/dynamic/DynamicVideoPlayer.tsx

@@ -1,4 +1,11 @@
-import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import {
+  ReactNode,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+} from "react";
 import { useApiHost } from "@/api";
 import useSWR from "swr";
 import { FrigateConfig } from "@/types/frigateConfig";
@@ -40,6 +47,7 @@ type DynamicVideoPlayerProps = {
   setFullResolution: React.Dispatch<React.SetStateAction<VideoResolutionType>>;
   toggleFullscreen: () => void;
   containerRef?: React.MutableRefObject<HTMLDivElement | null>;
+  transformedOverlay?: ReactNode;
 };
 export default function DynamicVideoPlayer({
   className,
@@ -58,6 +66,7 @@ export default function DynamicVideoPlayer({
   setFullResolution,
   toggleFullscreen,
   containerRef,
+  transformedOverlay,
 }: DynamicVideoPlayerProps) {
   const { t } = useTranslation(["components/player"]);
   const apiHost = useApiHost();
@@ -312,6 +321,7 @@ export default function DynamicVideoPlayer({
           isDetailMode={isDetailMode}
           camera={contextCamera || camera}
           currentTimeOverride={currentTime}
+          transformedOverlay={transformedOverlay}
         />
       )}
       <PreviewPlayer

web/src/components/timeline/MotionReviewTimeline.tsx

@@ -25,6 +25,7 @@ export type MotionReviewTimelineProps = {
   timestampSpread: number;
   timelineStart: number;
   timelineEnd: number;
+  scrollToTime?: number;
   showHandlebar?: boolean;
   handlebarTime?: number;
   setHandlebarTime?: React.Dispatch<React.SetStateAction<number>>;
@@ -58,6 +59,7 @@ export function MotionReviewTimeline({
   timestampSpread,
   timelineStart,
   timelineEnd,
+  scrollToTime,
   showHandlebar = false,
   handlebarTime,
   setHandlebarTime,
@@ -176,6 +178,15 @@ export function MotionReviewTimeline({
     [],
   );
 
+  // allow callers to request the timeline center on a specific time
+  useEffect(() => {
+    if (scrollToTime == undefined) return;
+
+    setTimeout(() => {
+      scrollToSegment(alignStartDateToTimeline(scrollToTime), true, "auto");
+    }, 0);
+  }, [scrollToTime, scrollToSegment, alignStartDateToTimeline]);
+
   // keep handlebar centered when zooming
   useEffect(() => {
     setTimeout(() => {

web/src/components/timeline/ReviewTimeline.tsx

@@ -343,9 +343,12 @@ export function ReviewTimeline({
 
   useEffect(() => {
     if (onHandlebarDraggingChange) {
-      onHandlebarDraggingChange(isDraggingHandlebar);
+      // Keep existing callback name but treat it as a generic dragging signal.
+      // This allows consumers (e.g. export-handle timelines) to correctly
+      // enable preview scrubbing while dragging export handles.
+      onHandlebarDraggingChange(isDragging);
     }
-  }, [isDraggingHandlebar, onHandlebarDraggingChange]);
+  }, [isDragging, onHandlebarDraggingChange]);
 
   const isHandlebarInNoRecordingPeriod = useMemo(() => {
     if (!getRecordingAvailability || handlebarTime === undefined) return false;

web/src/components/ui/progress.tsx

@@ -0,0 +1,26 @@
+import * as React from "react"
+import * as ProgressPrimitive from "@radix-ui/react-progress"
+
+import { cn } from "@/lib/utils"
+
+const Progress = React.forwardRef<
+  React.ElementRef<typeof ProgressPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ProgressPrimitive.Root>
+>(({ className, value, ...props }, ref) => (
+  <ProgressPrimitive.Root
+    ref={ref}
+    className={cn(
+      "relative h-4 w-full overflow-hidden rounded-full bg-secondary",
+      className
+    )}
+    {...props}
+  >
+    <ProgressPrimitive.Indicator
+      className="h-full w-full flex-1 bg-primary transition-all"
+      style={{ transform: `translateX(-${100 - (value || 0)}%)` }}
+    />
+  </ProgressPrimitive.Root>
+))
+Progress.displayName = ProgressPrimitive.Root.displayName
+
+export { Progress }

web/src/hooks/use-camera-activity.ts

@@ -8,14 +8,19 @@ import {
 import { CameraConfig, FrigateConfig } from "@/types/frigateConfig";
 import { MotionData, ReviewSegment } from "@/types/review";
 import { useCallback, useEffect, useMemo, useState } from "react";
-import { useTimelineUtils } from "./use-timeline-utils";
 import { AudioDetection, ObjectType } from "@/types/ws";
+import { useTimelineUtils } from "./use-timeline-utils";
 import useDeepMemo from "./use-deep-memo";
 import { isEqual } from "lodash";
 import { useAutoFrigateStats } from "./use-stats";
 import useSWR from "swr";
 import { getAttributeLabels } from "@/utils/iconUtil";
 
+export type MotionOnlyRange = {
+  start_time: number;
+  end_time: number;
+};
+
 type useCameraActivityReturn = {
   enabled?: boolean;
   activeTracking: boolean;
@@ -204,9 +209,9 @@ export function useCameraMotionNextTimestamp(
       return [];
     }
 
-    const ranges = [];
+    const ranges: [number, number][] = [];
-    let currentSegmentStart = null;
+    let currentSegmentStart: number | null = null;
-    let currentSegmentEnd = null;
+    let currentSegmentEnd: number | null = null;
 
     // align motion start to timeline start
     const offset =
@@ -215,13 +220,19 @@ export function useCameraMotionNextTimestamp(
       segmentDuration;
 
     const startIndex = Math.abs(Math.floor(offset / 15));
+    const now = Date.now() / 1000;
 
     for (
       let i = startIndex;
       i < motionData.length;
       i = i + segmentDuration / 15
     ) {
-      const motionStart = motionData[i].start_time;
+      const motionStart = motionData[i]?.start_time;
+
+      if (motionStart == undefined) {
+        continue;
+      }
+
       const motionEnd = motionStart + segmentDuration;
 
       const segmentMotion = motionData
@@ -230,10 +241,10 @@ export function useCameraMotionNextTimestamp(
       const overlappingReviewItems = reviewItems.some(
         (item) =>
           (item.start_time >= motionStart && item.start_time < motionEnd) ||
-          ((item.end_time ?? Date.now() / 1000) > motionStart &&
+          ((item.end_time ?? now) > motionStart &&
-            (item.end_time ?? Date.now() / 1000) <= motionEnd) ||
+            (item.end_time ?? now) <= motionEnd) ||
           (item.start_time <= motionStart &&
-            (item.end_time ?? Date.now() / 1000) >= motionEnd),
+            (item.end_time ?? now) >= motionEnd),
       );
 
       if (!segmentMotion || overlappingReviewItems) {
@@ -241,16 +252,14 @@ export function useCameraMotionNextTimestamp(
           currentSegmentStart = motionStart;
         }
         currentSegmentEnd = motionEnd;
-      } else {
+      } else if (currentSegmentStart !== null && currentSegmentEnd !== null) {
-        if (currentSegmentStart !== null) {
+        ranges.push([currentSegmentStart, currentSegmentEnd]);
-          ranges.push([currentSegmentStart, currentSegmentEnd]);
+        currentSegmentStart = null;
-          currentSegmentStart = null;
+        currentSegmentEnd = null;
-          currentSegmentEnd = null;
-        }
       }
     }
 
-    if (currentSegmentStart !== null) {
+    if (currentSegmentStart !== null && currentSegmentEnd !== null) {
       ranges.push([currentSegmentStart, currentSegmentEnd]);
     }
 
@@ -304,3 +313,93 @@ export function useCameraMotionNextTimestamp(
 
   return nextTimestamp;
 }
+
+export function useCameraMotionOnlyRanges(
+  segmentDuration: number,
+  reviewItems: ReviewSegment[],
+  motionData: MotionData[],
+) {
+  const motionOnlyRanges = useMemo(() => {
+    if (!motionData?.length || !reviewItems) {
+      return [];
+    }
+
+    const fallbackBucketDuration = Math.max(1, segmentDuration / 2);
+    const normalizedMotionData = Array.from(
+      motionData
+        .reduce((accumulator, item) => {
+          const currentMotion = accumulator.get(item.start_time) ?? 0;
+          accumulator.set(
+            item.start_time,
+            Math.max(currentMotion, item.motion ?? 0),
+          );
+          return accumulator;
+        }, new Map<number, number>())
+        .entries(),
+    )
+      .map(([start_time, motion]) => ({ start_time, motion }))
+      .sort((left, right) => left.start_time - right.start_time);
+
+    const bucketRanges: MotionOnlyRange[] = [];
+    const now = Date.now() / 1000;
+
+    for (let i = 0; i < normalizedMotionData.length; i++) {
+      const motionStart = normalizedMotionData[i].start_time;
+      const motionEnd = motionStart + fallbackBucketDuration;
+
+      const overlappingReviewItems = reviewItems.some(
+        (item) =>
+          (item.start_time >= motionStart && item.start_time < motionEnd) ||
+          ((item.end_time ?? now) > motionStart &&
+            (item.end_time ?? now) <= motionEnd) ||
+          (item.start_time <= motionStart &&
+            (item.end_time ?? now) >= motionEnd),
+      );
+
+      const isMotionOnlySegment =
+        (normalizedMotionData[i].motion ?? 0) > 0 && !overlappingReviewItems;
+
+      if (!isMotionOnlySegment) {
+        continue;
+      }
+
+      bucketRanges.push({
+        start_time: motionStart,
+        end_time: motionEnd,
+      });
+    }
+
+    if (!bucketRanges.length) {
+      return [];
+    }
+
+    const mergedRanges = bucketRanges.reduce<MotionOnlyRange[]>(
+      (ranges, range) => {
+        if (!ranges.length) {
+          return [range];
+        }
+
+        const previousRange = ranges[ranges.length - 1];
+        const isContiguous =
+          range.start_time <= previousRange.end_time + 0.001 &&
+          range.start_time >= previousRange.end_time - 0.001;
+
+        if (isContiguous) {
+          previousRange.end_time = Math.max(
+            previousRange.end_time,
+            range.end_time,
+          );
+          return ranges;
+        }
+
+        ranges.push(range);
+        return ranges;
+      },
+      [],
+    );
+
+    return mergedRanges;
+  }, [motionData, reviewItems, segmentDuration]);
+
+  return motionOnlyRanges;
+}

web/src/pages/Events.tsx

@@ -1,5 +1,6 @@
 import ActivityIndicator from "@/components/indicators/activity-indicator";
 import useApiFilter from "@/hooks/use-api-filter";
+import { useAllowedCameras } from "@/hooks/use-allowed-cameras";
 import { useCameraPreviews } from "@/hooks/use-camera-previews";
 import { useTimezone } from "@/hooks/use-date-utils";
 import { useOverlayState, useSearchEffect } from "@/hooks/use-overlay-state";
@@ -21,6 +22,7 @@ import {
   getEndOfDayTimestamp,
 } from "@/utils/dateUtil";
 import EventView from "@/views/events/EventView";
+import MotionSearchView from "@/views/motion-search/MotionSearchView";
 import { RecordingView } from "@/views/recording/RecordingView";
 import axios from "axios";
 import { useCallback, useEffect, useMemo, useState } from "react";
@@ -34,6 +36,7 @@ export default function Events() {
     revalidateOnFocus: false,
   });
   const timezone = useTimezone(config);
+  const allowedCameras = useAllowedCameras();
 
   // recordings viewer
 
@@ -52,6 +55,74 @@ export default function Events() {
     undefined,
     false,
   );
+  const [motionPreviewsCamera, setMotionPreviewsCamera] = useOverlayState<
+    string | undefined
+  >("motionPreviewsCamera", undefined);
+
+  const [motionSearchCamera, setMotionSearchCamera] = useState<string | null>(
+    null,
+  );
+  const [motionSearchDay, setMotionSearchDay] = useState<Date | undefined>(
+    undefined,
+  );
+
+  const motionSearchCameras = useMemo(() => {
+    if (!config?.cameras) {
+      return [] as string[];
+    }
+
+    return Object.keys(config.cameras).filter((cam) =>
+      allowedCameras.includes(cam),
+    );
+  }, [allowedCameras, config?.cameras]);
+
+  const selectedMotionSearchCamera = useMemo(() => {
+    if (!motionSearchCamera) {
+      return null;
+    }
+
+    if (motionSearchCameras.includes(motionSearchCamera)) {
+      return motionSearchCamera;
+    }
+
+    return motionSearchCameras[0] ?? null;
+  }, [motionSearchCamera, motionSearchCameras]);
+
+  const motionSearchTimeRange = useMemo(() => {
+    if (motionSearchDay) {
+      return {
+        after: getBeginningOfDayTimestamp(new Date(motionSearchDay)),
+        before: getEndOfDayTimestamp(new Date(motionSearchDay)),
+      };
+    }
+
+    const now = Date.now() / 1000;
+    return {
+      after: now - 86400,
+      before: now,
+    };
+  }, [motionSearchDay]);
+
+  const closeMotionSearch = useCallback(() => {
+    setMotionSearchCamera(null);
+    setMotionSearchDay(undefined);
+    setBeforeTs(Date.now() / 1000);
+  }, []);
+
+  const handleMotionSearchCameraSelect = useCallback((camera: string) => {
+    setMotionSearchCamera(camera);
+  }, []);
+
+  const handleMotionSearchDaySelect = useCallback((day: Date | undefined) => {
+    if (day == undefined) {
+      setMotionSearchDay(undefined);
+      return;
+    }
+
+    const normalizedDay = new Date(day);
+    normalizedDay.setHours(0, 0, 0, 0);
+    setMotionSearchDay(normalizedDay);
+  }, []);
 
   const [notificationTab, setNotificationTab] =
     useState<TimelineType>("timeline");
@@ -508,7 +579,24 @@ export default function Events() {
       );
     }
   } else {
-    return (
+    return motionSearchCamera ? (
+      !config || !selectedMotionSearchCamera ? (
+        <ActivityIndicator />
+      ) : (
+        <MotionSearchView
+          config={config}
+          cameras={motionSearchCameras}
+          selectedCamera={selectedMotionSearchCamera}
+          onCameraSelect={handleMotionSearchCameraSelect}
+          cameraLocked={true}
+          selectedDay={motionSearchDay}
+          onDaySelect={handleMotionSearchDaySelect}
+          timeRange={motionSearchTimeRange}
+          timezone={timezone}
+          onBack={closeMotionSearch}
+        />
+      )
+    ) : (
       <EventView
         reviewItems={reviewItems}
         currentReviewItems={currentItems}
@@ -525,6 +613,11 @@ export default function Events() {
         markItemAsReviewed={markItemAsReviewed}
         markAllItemsAsReviewed={markAllItemsAsReviewed}
         onOpenRecording={setRecording}
+        motionPreviewsCamera={motionPreviewsCamera ?? null}
+        setMotionPreviewsCamera={(camera) =>
+          setMotionPreviewsCamera(camera ?? undefined)
+        }
+        setMotionSearchCamera={setMotionSearchCamera}
         pullLatestData={reloadData}
         updateFilter={onUpdateFilter}
       />

web/src/pages/MotionSearch.tsx

@@ -0,0 +1,112 @@
+import { useEffect, useMemo, useState, useCallback } from "react";
+import { useTranslation } from "react-i18next";
+import useSWR from "swr";
+import { FrigateConfig } from "@/types/frigateConfig";
+import { useTimezone } from "@/hooks/use-date-utils";
+import MotionSearchView from "@/views/motion-search/MotionSearchView";
+import {
+  getBeginningOfDayTimestamp,
+  getEndOfDayTimestamp,
+} from "@/utils/dateUtil";
+import { useAllowedCameras } from "@/hooks/use-allowed-cameras";
+import { useSearchEffect } from "@/hooks/use-overlay-state";
+import ActivityIndicator from "@/components/indicators/activity-indicator";
+
+export default function MotionSearch() {
+  const { t } = useTranslation(["views/motionSearch"]);
+
+  const { data: config } = useSWR<FrigateConfig>("config", {
+    revalidateOnFocus: false,
+  });
+
+  const timezone = useTimezone(config);
+
+  useEffect(() => {
+    document.title = t("documentTitle");
+  }, [t]);
+
+  // Get allowed cameras
+  const allowedCameras = useAllowedCameras();
+
+  const cameras = useMemo(() => {
+    if (!config?.cameras) return [];
+    return Object.keys(config.cameras).filter((cam) =>
+      allowedCameras.includes(cam),
+    );
+  }, [config?.cameras, allowedCameras]);
+
+  // Selected camera state
+  const [selectedCamera, setSelectedCamera] = useState<string | null>(null);
+  const [cameraLocked, setCameraLocked] = useState(false);
+
+  useSearchEffect("camera", (camera: string) => {
+    if (cameras.length > 0 && cameras.includes(camera)) {
+      setSelectedCamera(camera);
+      setCameraLocked(true);
+    }
+    return false;
+  });
+
+  // Initialize with first camera when available (only if not set by camera param)
+  useEffect(() => {
+    if (cameras.length === 0) return;
+    if (!selectedCamera) {
+      setSelectedCamera(cameras[0]);
+    }
+  }, [cameras, selectedCamera]);
+
+  // Time range state - default to last 24 hours
+  const [selectedDay, setSelectedDay] = useState<Date | undefined>(undefined);
+
+  const timeRange = useMemo(() => {
+    if (selectedDay) {
+      return {
+        after: getBeginningOfDayTimestamp(new Date(selectedDay)),
+        before: getEndOfDayTimestamp(new Date(selectedDay)),
+      };
+    }
+    // Default to last 24 hours
+    const now = Date.now() / 1000;
+    return {
+      after: now - 86400,
+      before: now,
+    };
+  }, [selectedDay]);
+
+  const handleCameraSelect = useCallback((camera: string) => {
+    setSelectedCamera(camera);
+  }, []);
+
+  const handleDaySelect = useCallback((day: Date | undefined) => {
+    if (day == undefined) {
+      setSelectedDay(undefined);
+      return;
+    }
+
+    const normalizedDay = new Date(day);
+    normalizedDay.setHours(0, 0, 0, 0);
+    setSelectedDay(normalizedDay);
+  }, []);
+
+  if (!config || cameras.length === 0) {
+    return (
+      <div className="flex size-full items-center justify-center">
+        <ActivityIndicator />
+      </div>
+    );
+  }
+
+  return (
+    <MotionSearchView
+      config={config}
+      cameras={cameras}
+      selectedCamera={selectedCamera ?? null}
+      onCameraSelect={handleCameraSelect}
+      cameraLocked={cameraLocked}
+      selectedDay={selectedDay}
+      onDaySelect={handleDaySelect}
+      timeRange={timeRange}
+      timezone={timezone}
+    />
+  );
+}

web/src/types/motionSearch.ts

@@ -0,0 +1,46 @@
+/**
+ * Types for the Motion Search feature
+ */
+
+export interface MotionSearchResult {
+  timestamp: number;
+  change_percentage: number;
+}
+
+export interface MotionSearchRequest {
+  start_time: number;
+  end_time: number;
+  polygon_points: number[][];
+  parallel?: boolean;
+  threshold?: number;
+  min_area?: number;
+  frame_skip?: number;
+  max_results?: number;
+}
+
+export interface MotionSearchStartResponse {
+  success: boolean;
+  message: string;
+  job_id: string;
+}
+
+export interface MotionSearchMetrics {
+  segments_scanned: number;
+  segments_processed: number;
+  metadata_inactive_segments: number;
+  heatmap_roi_skip_segments: number;
+  fallback_full_range_segments: number;
+  frames_decoded: number;
+  wall_time_seconds: number;
+  segments_with_errors: number;
+}
+
+export interface MotionSearchStatusResponse {
+  success: boolean;
+  message: string;
+  status: "queued" | "running" | "success" | "failed" | "cancelled";
+  results?: MotionSearchResult[];
+  total_frames_processed?: number;
+  error_message?: string;
+  metrics?: MotionSearchMetrics;
+}

web/src/types/record.ts

@@ -11,6 +11,7 @@ export type Recording = {
   duration: number;
   motion: number;
   objects: number;
+  motion_heatmap?: Record<string, number> | null;
   dBFS: number;
 };
 

web/src/views/events/EventView.tsx

@@ -1,11 +1,21 @@
 import Logo from "@/components/Logo";
 import NewReviewData from "@/components/dynamic/NewReviewData";
+import CalendarFilterButton from "@/components/filter/CalendarFilterButton";
 import ReviewActionGroup from "@/components/filter/ReviewActionGroup";
 import ReviewFilterGroup from "@/components/filter/ReviewFilterGroup";
 import PreviewThumbnailPlayer from "@/components/player/PreviewThumbnailPlayer";
 import EventReviewTimeline from "@/components/timeline/EventReviewTimeline";
 import ActivityIndicator from "@/components/indicators/activity-indicator";
 import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
+import { VolumeSlider } from "@/components/ui/slider";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectSeparator,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
 import { useTimelineUtils } from "@/hooks/use-timeline-utils";
 import { useScrollLockout } from "@/hooks/use-mouse-listener";
 import { FrigateConfig } from "@/types/frigateConfig";
@@ -22,6 +32,7 @@ import {
   ZoomLevel,
 } from "@/types/review";
 import { getChunkedTimeRange } from "@/utils/timelineUtil";
+import { getEndOfDayTimestamp } from "@/utils/dateUtil";
 import axios from "axios";
 import {
   MutableRefObject,
@@ -34,9 +45,18 @@ import {
 import { isDesktop, isMobile, isMobileOnly } from "react-device-detect";
 import { LuFolderCheck, LuFolderX } from "react-icons/lu";
 import { MdCircle } from "react-icons/md";
+import { FiMoreVertical } from "react-icons/fi";
+import { IoMdArrowRoundBack } from "react-icons/io";
 import useSWR from "swr";
 import MotionReviewTimeline from "@/components/timeline/MotionReviewTimeline";
 import { Button } from "@/components/ui/button";
+import BlurredIconButton from "@/components/button/BlurredIconButton";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
 import PreviewPlayer, {
   PreviewController,
 } from "@/components/player/PreviewPlayer";
@@ -44,7 +64,10 @@ import SummaryTimeline from "@/components/timeline/SummaryTimeline";
 import { RecordingStartingPoint } from "@/types/record";
 import VideoControls from "@/components/player/VideoControls";
 import { TimeRange } from "@/types/timeline";
-import { useCameraMotionNextTimestamp } from "@/hooks/use-camera-activity";
+import {
+  useCameraMotionNextTimestamp,
+  useCameraMotionOnlyRanges,
+} from "@/hooks/use-camera-activity";
 import useOptimisticState from "@/hooks/use-optimistic-state";
 import { Skeleton } from "@/components/ui/skeleton";
 import scrollIntoView from "scroll-into-view-if-needed";
@@ -56,6 +79,10 @@ import { GiSoundWaves } from "react-icons/gi";
 import useKeyboardListener from "@/hooks/use-keyboard-listener";
 import { useTimelineZoom } from "@/hooks/use-timeline-zoom";
 import { useTranslation } from "react-i18next";
+import { FaCog } from "react-icons/fa";
+import ReviewActivityCalendar from "@/components/overlay/ReviewActivityCalendar";
+import PlatformAwareDialog from "@/components/overlay/dialog/PlatformAwareDialog";
+import MotionPreviewsPane from "./MotionPreviewsPane";
 import { EmptyCard } from "@/components/card/EmptyCard";
 import { EmptyCardData } from "@/types/card";
 
@@ -75,6 +102,9 @@ type EventViewProps = {
   markItemAsReviewed: (review: ReviewSegment) => void;
   markAllItemsAsReviewed: (currentItems: ReviewSegment[]) => void;
   onOpenRecording: (recordingInfo: RecordingStartingPoint) => void;
+  motionPreviewsCamera: string | null;
+  setMotionPreviewsCamera: (camera: string | null) => void;
+  setMotionSearchCamera: (camera: string) => void;
   pullLatestData: () => void;
   updateFilter: (filter: ReviewFilter) => void;
 };
@@ -94,6 +124,9 @@ export default function EventView({
   markItemAsReviewed,
   markAllItemsAsReviewed,
   onOpenRecording,
+  motionPreviewsCamera,
+  setMotionPreviewsCamera,
+  setMotionSearchCamera,
   pullLatestData,
   updateFilter,
 }: EventViewProps) {
@@ -274,6 +307,15 @@ export default function EventView({
     100,
   );
 
+  const motionPreviewsOpen =
+    severity === "significant_motion" && motionPreviewsCamera != null;
+
+  useEffect(() => {
+    if (severity !== "significant_motion") {
+      setMotionPreviewsCamera(null);
+    }
+  }, [setMotionPreviewsCamera, severity]);
+
   // review filter info
 
   const reviewFilterList = useMemo<FilterList>(() => {
@@ -301,124 +343,136 @@ export default function EventView({
   return (
     <div className="flex size-full flex-col pt-2 md:py-2">
       <Toaster closeButton={true} />
-      <div className="relative mb-2 flex h-11 items-center justify-between pl-2 pr-2 md:pl-3">
+      {!motionPreviewsOpen && (
-        {isMobile && (
+        <div className="relative mb-2 flex h-11 items-center justify-between pl-2 pr-2 md:pl-3">
-          <Logo className="absolute inset-x-1/2 h-8 -translate-x-1/2" />
+          {isMobile && (
-        )}
+            <Logo className="absolute inset-x-1/2 h-8 -translate-x-1/2" />
-        <ToggleGroup
+          )}
-          className="*:rounded-md *:px-3 *:py-4"
+          <ToggleGroup
-          type="single"
+            className="*:rounded-md *:px-3 *:py-4"
-          size="sm"
+            type="single"
-          value={severityToggle}
+            size="sm"
-          onValueChange={(value: ReviewSeverity) =>
+            value={severityToggle}
-            value ? setSeverityToggle(value) : null
+            onValueChange={(value: ReviewSeverity) =>
-          } // don't allow the severity to be unselected
+              value ? setSeverityToggle(value) : null
-        >
+            } // don't allow the severity to be unselected
-          <ToggleGroupItem
-            className={cn(severityToggle != "alert" && "text-muted-foreground")}
-            value="alert"
-            aria-label={t("alerts")}
           >
-            <div
+            <ToggleGroupItem
               className={cn(
-                "flex size-6 items-center justify-center rounded text-severity_alert sm:hidden",
+                severityToggle != "alert" && "text-muted-foreground",
-                severityToggle == "alert" ? "font-semibold" : "font-medium",
               )}
+              value="alert"
+              aria-label={t("alerts")}
             >
-              {reviewCounts.alert > -1 ? (
+              <div
-                reviewCounts.alert
+                className={cn(
-              ) : (
+                  "flex size-6 items-center justify-center rounded text-severity_alert sm:hidden",
-                <ActivityIndicator className="size-4" />
+                  severityToggle == "alert" ? "font-semibold" : "font-medium",
-              )}
+                )}
-            </div>
+              >
-            <div className="hidden items-center sm:flex">
-              <MdCircle className="size-2 text-severity_alert md:mr-[10px]" />
-              <div className="hidden md:flex md:flex-row md:items-center">
-                {t("alerts")}
                 {reviewCounts.alert > -1 ? (
-                  ` ∙ ${reviewCounts.alert}`
+                  reviewCounts.alert
                 ) : (
-                  <ActivityIndicator className="ml-2 size-4" />
+                  <ActivityIndicator className="size-4" />
                 )}
               </div>
-            </div>
+              <div className="hidden items-center sm:flex">
-          </ToggleGroupItem>
+                <MdCircle className="size-2 text-severity_alert md:mr-[10px]" />
-          <ToggleGroupItem
+                <div className="hidden md:flex md:flex-row md:items-center">
-            className={cn(
+                  {t("alerts")}
-              severityToggle != "detection" && "text-muted-foreground",
+                  {reviewCounts.alert > -1 ? (
-            )}
+                    ` ∙ ${reviewCounts.alert}`
-            value="detection"
+                  ) : (
-            aria-label={t("detections")}
+                    <ActivityIndicator className="ml-2 size-4" />
-          >
+                  )}
-            <div
+                </div>
+              </div>
+            </ToggleGroupItem>
+            <ToggleGroupItem
               className={cn(
-                "flex size-6 items-center justify-center rounded text-severity_detection sm:hidden",
+                severityToggle != "detection" && "text-muted-foreground",
-                severityToggle == "detection" ? "font-semibold" : "font-medium",
               )}
+              value="detection"
+              aria-label={t("detections")}
             >
-              {reviewCounts.detection > -1 ? (
+              <div
-                reviewCounts.detection
+                className={cn(
-              ) : (
+                  "flex size-6 items-center justify-center rounded text-severity_detection sm:hidden",
-                <ActivityIndicator className="size-4" />
+                  severityToggle == "detection"
-              )}
+                    ? "font-semibold"
-            </div>
+                    : "font-medium",
-            <div className="hidden items-center sm:flex">
+                )}
-              <MdCircle className="size-2 text-severity_detection md:mr-[10px]" />
+              >
-              <div className="hidden md:flex md:flex-row md:items-center">
-                {t("detections")}
                 {reviewCounts.detection > -1 ? (
-                  ` ∙ ${reviewCounts.detection}`
+                  reviewCounts.detection
                 ) : (
-                  <ActivityIndicator className="ml-2 size-4" />
+                  <ActivityIndicator className="size-4" />
                 )}
               </div>
-            </div>
+              <div className="hidden items-center sm:flex">
-          </ToggleGroupItem>
+                <MdCircle className="size-2 text-severity_detection md:mr-[10px]" />
-          <ToggleGroupItem
+                <div className="hidden md:flex md:flex-row md:items-center">
-            className={cn(
+                  {t("detections")}
-              "rounded-lg px-3 py-4",
+                  {reviewCounts.detection > -1 ? (
-              severityToggle != "significant_motion" && "text-muted-foreground",
+                    ` ∙ ${reviewCounts.detection}`
-            )}
+                  ) : (
-            value="significant_motion"
+                    <ActivityIndicator className="ml-2 size-4" />
-            aria-label={t("motion.label")}
+                  )}
-          >
+                </div>
-            <GiSoundWaves className="size-6 rotate-90 text-severity_significant_motion sm:hidden" />
+              </div>
-            <div className="hidden items-center sm:flex">
+            </ToggleGroupItem>
-              <MdCircle className="size-2 text-severity_significant_motion md:mr-[10px]" />
+            <ToggleGroupItem
-              <div className="hidden md:block">{t("motion.label")}</div>
+              className={cn(
-            </div>
+                "rounded-lg px-3 py-4",
-          </ToggleGroupItem>
+                severityToggle != "significant_motion" &&
-        </ToggleGroup>
+                  "text-muted-foreground",
+              )}
+              value="significant_motion"
+              aria-label={t("motion.label")}
+            >
+              <GiSoundWaves className="size-6 rotate-90 text-severity_significant_motion sm:hidden" />
+              <div className="hidden items-center sm:flex">
+                <MdCircle className="size-2 text-severity_significant_motion md:mr-[10px]" />
+                <div className="hidden md:block">{t("motion.label")}</div>
+              </div>
+            </ToggleGroupItem>
+          </ToggleGroup>
 
-        {selectedReviews.length <= 0 ? (
+          {selectedReviews.length <= 0 ? (
-          <ReviewFilterGroup
+            <ReviewFilterGroup
-            filters={
+              filters={
-              severity == "significant_motion"
+                severity == "significant_motion"
-                ? ["cameras", "date", "motionOnly"]
+                  ? ["cameras", "date", "motionOnly"]
-                : ["cameras", "reviewed", "date", "general"]
+                  : ["cameras", "reviewed", "date", "general"]
-            }
+              }
-            currentSeverity={severityToggle}
+              currentSeverity={severityToggle}
-            reviewSummary={reviewSummary}
+              reviewSummary={reviewSummary}
-            recordingsSummary={recordingsSummary}
+              recordingsSummary={recordingsSummary}
-            filter={filter}
+              filter={filter}
-            motionOnly={motionOnly}
+              motionOnly={motionOnly}
-            filterList={reviewFilterList}
+              filterList={reviewFilterList}
-            showReviewed={showReviewed}
+              showReviewed={showReviewed}
-            setShowReviewed={setShowReviewed}
+              setShowReviewed={setShowReviewed}
-            onUpdateFilter={updateFilter}
+              onUpdateFilter={updateFilter}
-            setMotionOnly={setMotionOnly}
+              setMotionOnly={setMotionOnly}
-          />
+            />
-        ) : (
+          ) : (
-          <ReviewActionGroup
+            <ReviewActionGroup
-            selectedReviews={selectedReviews}
+              selectedReviews={selectedReviews}
-            setSelectedReviews={setSelectedReviews}
+              setSelectedReviews={setSelectedReviews}
-            onExport={exportReview}
+              onExport={exportReview}
-            pullLatestData={pullLatestData}
+              pullLatestData={pullLatestData}
-          />
+            />
+          )}
+        </div>
+      )}
+
+      <div
+        className={cn(
+          "h-full min-h-0 overflow-hidden",
+          motionPreviewsOpen ? "flex flex-col" : "flex",
         )}
-      </div>
+      >
-
-      <div className="flex h-full overflow-hidden">
         {severity != "significant_motion" && (
           <DetectionReview
             contentRef={contentRef}
@@ -447,10 +501,16 @@ export default function EventView({
             contentRef={contentRef}
             reviewItems={reviewItems}
             relevantPreviews={relevantPreviews}
+            reviewSummary={reviewSummary}
+            recordingsSummary={recordingsSummary}
             timeRange={timeRange}
             startTime={startTime}
             filter={filter}
             motionOnly={motionOnly}
+            updateFilter={updateFilter}
+            motionPreviewsCamera={motionPreviewsCamera}
+            setMotionPreviewsCamera={setMotionPreviewsCamera}
+            setMotionSearchCamera={setMotionSearchCamera}
             emptyCardData={emptyCardData}
             onOpenRecording={onOpenRecording}
           />
@@ -898,10 +958,16 @@ type MotionReviewProps = {
     significant_motion: ReviewSegment[];
   };
   relevantPreviews?: Preview[];
+  reviewSummary?: ReviewSummary;
+  recordingsSummary?: RecordingsSummary;
   timeRange: TimeRange;
   startTime?: number;
   filter?: ReviewFilter;
   motionOnly?: boolean;
+  updateFilter: (filter: ReviewFilter) => void;
+  motionPreviewsCamera: string | null;
+  setMotionPreviewsCamera: (camera: string | null) => void;
+  setMotionSearchCamera: (camera: string) => void;
   emptyCardData: EmptyCardData;
   onOpenRecording: (data: RecordingStartingPoint) => void;
 };
@@ -909,13 +975,20 @@ function MotionReview({
   contentRef,
   reviewItems,
   relevantPreviews,
+  reviewSummary,
+  recordingsSummary,
   timeRange,
   startTime,
   filter,
   motionOnly = false,
+  updateFilter,
+  motionPreviewsCamera,
+  setMotionPreviewsCamera,
+  setMotionSearchCamera,
   emptyCardData,
   onOpenRecording,
 }: MotionReviewProps) {
+  const { t } = useTranslation(["views/events", "common"]);
   const segmentDuration = 30;
   const { data: config } = useSWR<FrigateConfig>("config");
 
@@ -961,6 +1034,15 @@ function MotionReview({
     },
   ]);
 
+  const { data: overlapReviewSegments } = useSWR<ReviewSegment[]>([
+    "review",
+    {
+      before: alignedBefore,
+      after: alignedAfter,
+      cameras: filter?.cameras?.join(",") ?? null,
+    },
+  ]);
+
   // timeline time
 
   const timeRangeSegments = useMemo(
@@ -973,19 +1055,29 @@ function MotionReview({
       return timeRangeSegments.ranges.length - 1;
     }
 
-    return timeRangeSegments.ranges.findIndex(
+    const index = timeRangeSegments.ranges.findIndex(
       (seg) => seg.after <= startTime && seg.before >= startTime,
     );
+
+    if (index === -1) {
+      return timeRangeSegments.ranges.length - 1;
+    }
+
+    return index;
     // only render once
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
   const [selectedRangeIdx, setSelectedRangeIdx] = useState(initialIndex);
   const [currentTime, setCurrentTime] = useState<number>(
-    startTime ?? timeRangeSegments.ranges[selectedRangeIdx]?.before,
+    startTime ??
+      timeRangeSegments.ranges[selectedRangeIdx]?.before ??
+      timeRangeSegments.end,
   );
   const currentTimeRange = useMemo(
-    () => timeRangeSegments.ranges[selectedRangeIdx],
+    () =>
+      timeRangeSegments.ranges[selectedRangeIdx] ??
+      timeRangeSegments.ranges[timeRangeSegments.ranges.length - 1],
     [selectedRangeIdx, timeRangeSegments],
   );
 
@@ -1023,18 +1115,86 @@ function MotionReview({
 
   const [playbackRate, setPlaybackRate] = useState(8);
   const [controlsOpen, setControlsOpen] = useState(false);
+  const [dimStrength, setDimStrength] = useState(82);
+  const [isPreviewSettingsOpen, setIsPreviewSettingsOpen] = useState(false);
+
+  const objectReviewItems = useMemo(
+    () =>
+      (overlapReviewSegments ?? []).filter(
+        (item) =>
+          item.severity === "alert" ||
+          item.severity === "detection" ||
+          (item.data.detections?.length ?? 0) > 0 ||
+          (item.data.objects?.length ?? 0) > 0,
+      ),
+    [overlapReviewSegments],
+  );
 
   const nextTimestamp = useCameraMotionNextTimestamp(
     timeRangeSegments.end,
     segmentDuration,
     motionOnly,
-    reviewItems?.all ?? [],
+    objectReviewItems,
     motionData ?? [],
     currentTime,
   );
 
   const timeoutIdRef = useRef<NodeJS.Timeout | null>(null);
 
+  const selectedMotionPreviewCamera = useMemo(
+    () =>
+      reviewCameras.find((camera) => camera.name === motionPreviewsCamera) ??
+      null,
+    [motionPreviewsCamera, reviewCameras],
+  );
+
+  const onUpdateSelectedDay = useCallback(
+    (day?: Date) => {
+      updateFilter({
+        ...filter,
+        after: day == undefined ? undefined : day.getTime() / 1000,
+        before: day == undefined ? undefined : getEndOfDayTimestamp(day),
+      });
+    },
+    [filter, updateFilter],
+  );
+
+  const selectedCameraMotionData = useMemo(() => {
+    if (!motionPreviewsCamera) {
+      return [];
+    }
+
+    return (motionData ?? []).filter((item) => {
+      const cameras = item.camera.split(",").map((camera) => camera.trim());
+      return cameras.includes(motionPreviewsCamera);
+    });
+  }, [motionData, motionPreviewsCamera]);
+
+  const selectedCameraReviewItems = useMemo(() => {
+    if (!motionPreviewsCamera) {
+      return [];
+    }
+
+    return objectReviewItems.filter(
+      (item) => item.camera === motionPreviewsCamera,
+    );
+  }, [motionPreviewsCamera, objectReviewItems]);
+
+  const motionPreviewRanges = useCameraMotionOnlyRanges(
+    segmentDuration,
+    selectedCameraReviewItems,
+    selectedCameraMotionData,
+  );
+
+  useEffect(() => {
+    if (
+      motionPreviewsCamera &&
+      !reviewCameras.some((camera) => camera.name === motionPreviewsCamera)
+    ) {
+      setMotionPreviewsCamera(null);
+    }
+  }, [motionPreviewsCamera, reviewCameras, setMotionPreviewsCamera]);
+
   useEffect(() => {
     if (nextTimestamp) {
       if (!playing && timeoutIdRef.current != null) {
@@ -1124,132 +1284,349 @@ function MotionReview({
 
   return (
     <>
-      <div className="no-scrollbar flex flex-1 flex-wrap content-start gap-2 overflow-y-auto md:gap-4">
+      {motionPreviewsCamera && selectedMotionPreviewCamera ? (
-        <div
+        <>
-          ref={contentRef}
+          <div className="relative mb-2 flex h-11 items-center justify-between pl-2 pr-2 md:px-3">
-          className={cn(
+            <Button
-            "no-scrollbar grid w-full grid-cols-1",
+              className="flex items-center gap-2.5 rounded-lg"
-            isMobile && "landscape:grid-cols-2",
+              aria-label={t("label.back", { ns: "common" })}
-            reviewCameras.length > 3 &&
+              size="sm"
-              isMobile &&
+              onClick={() => setMotionPreviewsCamera(null)}
-              "portrait:md:grid-cols-2 landscape:md:grid-cols-3",
+            >
-            isDesktop && "grid-cols-2 lg:grid-cols-3",
+              <IoMdArrowRoundBack className="size-5 text-secondary-foreground" />
-            "gap-2 overflow-auto px-1 md:mx-2 md:gap-4 xl:grid-cols-3 3xl:grid-cols-4",
+              {isDesktop && (
-          )}
+                <div className="text-primary">
-        >
+                  {t("button.back", { ns: "common" })}
-          {reviewCameras.map((camera) => {
+                </div>
-            let grow;
+              )}
-            let spans;
+            </Button>
-            const aspectRatio = camera.detect.width / camera.detect.height;
+
-            if (aspectRatio > 2) {
+            <div className="flex items-center gap-2">
-              grow = "aspect-wide";
+              {isDesktop && (
-              spans = "sm:col-span-2";
+                <CalendarFilterButton
-            } else if (aspectRatio < 1) {
+                  reviewSummary={reviewSummary}
-              grow = "h-full aspect-tall";
+                  recordingsSummary={recordingsSummary}
-              spans = "md:row-span-2";
+                  day={
-            } else {
+                    filter?.after == undefined
-              grow = "aspect-video";
+                      ? undefined
-            }
+                      : new Date(filter.after * 1000)
-            const detectionType = getDetectionType(camera.name);
+                  }
-            return (
+                  updateSelectedDay={onUpdateSelectedDay}
-              <div key={camera.name} className={`relative ${spans}`}>
+                />
-                {motionData ? (
+              )}
-                  <>
+              <PlatformAwareDialog
-                    <PreviewPlayer
+                trigger={
-                      className={`rounded-lg md:rounded-2xl ${spans} ${grow}`}
+                  <Button
-                      camera={camera.name}
+                    className={cn(
-                      timeRange={currentTimeRange}
+                      isDesktop ? "flex items-center gap-2" : "rounded-lg",
-                      startTime={previewStart}
+                    )}
-                      cameraPreviews={relevantPreviews}
+                    size="sm"
-                      isScrubbing={scrubbing}
+                    aria-label={
-                      onControllerReady={(controller) => {
+                      isDesktop
-                        videoPlayersRef.current[camera.name] = controller;
+                        ? t("motionPreviews.mobileSettingsTitle")
-                      }}
+                        : t("filters", { ns: "views/recording" })
-                      onClick={() =>
+                    }
-                        onOpenRecording({
+                  >
-                          camera: camera.name,
+                    <FaCog className="text-secondary-foreground" />
-                          startTime: Math.min(
+                    {isDesktop && t("motionPreviews.mobileSettingsTitle")}
-                            currentTime,
+                  </Button>
-                            Date.now() / 1000 - 30,
+                }
-                          ),
+                content={
-                          severity: "significant_motion",
+                  <div className="space-y-4 py-2">
-                        })
+                    {!isDesktop && (
-                      }
+                      <div className="space-y-1">
-                    />
+                        <div className="text-md">
-                    <div
+                          {t("motionPreviews.mobileSettingsTitle")}
-                      className={`review-item-ring pointer-events-none absolute inset-0 z-20 size-full rounded-lg outline outline-[3px] -outline-offset-[2.8px] ${detectionType ? `outline-severity_${detectionType} shadow-severity_${detectionType}` : "outline-transparent duration-500"}`}
+                        </div>
-                    />
+                        <div className="text-xs text-muted-foreground">
-                  </>
+                          {t("motionPreviews.mobileSettingsDesc")}
-                ) : (
+                        </div>
-                  <Skeleton
+                      </div>
-                    className={`size-full rounded-lg md:rounded-2xl ${spans} ${grow}`}
+                    )}
-                  />
+
+                    <div className="space-y-3">
+                      <div className="space-y-0.5">
+                        <div className="text-md">
+                          {t("motionPreviews.speed")}
+                        </div>
+                        <div className="text-xs text-muted-foreground">
+                          {t("motionPreviews.speedDesc")}
+                        </div>
+                      </div>
+                      <Select
+                        value={String(playbackRate)}
+                        onValueChange={(value) =>
+                          setPlaybackRate(Number(value))
+                        }
+                      >
+                        <SelectTrigger
+                          className="h-10 w-full"
+                          aria-label={t("motionPreviews.speedAria")}
+                        >
+                          <SelectValue />
+                        </SelectTrigger>
+                        <SelectContent>
+                          {[4, 8, 12, 16].map((speed) => (
+                            <SelectItem key={speed} value={String(speed)}>
+                              {speed}x
+                            </SelectItem>
+                          ))}
+                        </SelectContent>
+                      </Select>
+                    </div>
+
+                    <div className="space-y-3">
+                      <div className="space-y-0.5">
+                        <div className="text-md">{t("motionPreviews.dim")}</div>
+                        <div className="text-xs text-muted-foreground">
+                          {t("motionPreviews.dimDesc")}
+                        </div>
+                      </div>
+                      <div className="px-1 py-2">
+                        <VolumeSlider
+                          className="w-full"
+                          min={25}
+                          max={95}
+                          step={1}
+                          value={[dimStrength]}
+                          aria-label={t("motionPreviews.dimAria")}
+                          onValueChange={(values) => {
+                            const nextValue = values[0];
+                            if (nextValue == undefined) {
+                              return;
+                            }
+
+                            setDimStrength(nextValue);
+                          }}
+                        />
+                      </div>
+                    </div>
+
+                    {!isDesktop && (
+                      <>
+                        <SelectSeparator />
+
+                        <div className="flex w-full flex-row justify-center">
+                          <ReviewActivityCalendar
+                            recordingsSummary={recordingsSummary}
+                            selectedDay={
+                              filter?.after == undefined
+                                ? undefined
+                                : new Date(filter.after * 1000)
+                            }
+                            onSelect={(day) => {
+                              onUpdateSelectedDay(day);
+                              setIsPreviewSettingsOpen(false);
+                            }}
+                          />
+                        </div>
+                        <div className="flex items-center justify-center p-2">
+                          <Button
+                            aria-label={t("button.reset", { ns: "common" })}
+                            onClick={() => {
+                              onUpdateSelectedDay(undefined);
+                              setIsPreviewSettingsOpen(false);
+                            }}
+                          >
+                            {t("button.reset", { ns: "common" })}
+                          </Button>
+                        </div>
+                      </>
+                    )}
+                  </div>
+                }
+                contentClassName={cn(
+                  isDesktop
+                    ? "w-80"
+                    : "scrollbar-container max-h-[75dvh] overflow-y-auto overflow-x-hidden px-4",
                 )}
-              </div>
+                open={isPreviewSettingsOpen}
-            );
+                onOpenChange={setIsPreviewSettingsOpen}
-          })}
+              />
-        </div>
+            </div>
-      </div>
+          </div>
-      <div className="no-scrollbar w-[55px] overflow-y-auto md:w-[100px]">
+
-        {motionData ? (
+          <MotionPreviewsPane
-          <MotionReviewTimeline
+            camera={selectedMotionPreviewCamera}
-            segmentDuration={segmentDuration}
-            timestampSpread={15}
-            timelineStart={timeRangeSegments.end}
-            timelineEnd={timeRangeSegments.start}
-            motionOnly={motionOnly}
-            showHandlebar
-            handlebarTime={currentTime}
-            setHandlebarTime={setCurrentTime}
-            events={reviewItems?.all ?? []}
-            motion_events={motionData ?? []}
             contentRef={contentRef}
-            onHandlebarDraggingChange={(scrubbing) => {
+            cameraPreviews={relevantPreviews}
-              if (playing && scrubbing) {
+            motionRanges={motionPreviewRanges}
-                setPlaying(false);
+            isLoadingMotionRanges={
-              }
+              motionData == undefined || overlapReviewSegments == undefined
-
+            }
-              setScrubbing(scrubbing);
+            playbackRate={playbackRate}
+            nonMotionAlpha={dimStrength / 100}
+            onSeek={(timestamp) => {
+              onOpenRecording({
+                camera: selectedMotionPreviewCamera.name,
+                startTime: timestamp,
+                severity: "significant_motion",
+              });
             }}
-            dense={isMobileOnly}
-            isZooming={false}
-            zoomDirection={null}
-            alwaysShowMotionLine={true}
           />
-        ) : (
+        </>
-          <Skeleton className="size-full" />
+      ) : (
-        )}
+        <div className="no-scrollbar flex min-w-0 flex-1 flex-wrap content-start gap-2 overflow-y-auto md:gap-4">
-      </div>
+          <div
+            ref={contentRef}
+            className={cn(
+              "no-scrollbar grid w-full grid-cols-1",
+              isMobile && "landscape:grid-cols-2",
+              reviewCameras.length > 3 &&
+                isMobile &&
+                "portrait:md:grid-cols-2 landscape:md:grid-cols-3",
+              isDesktop && "grid-cols-2 lg:grid-cols-3",
+              "gap-2 overflow-auto px-1 md:mx-2 md:gap-4 xl:grid-cols-3 3xl:grid-cols-4",
+            )}
+          >
+            {reviewCameras.map((camera) => {
+              let grow;
+              let spans;
+              const aspectRatio = camera.detect.width / camera.detect.height;
+              if (aspectRatio > 2) {
+                grow = "aspect-wide";
+                spans = "sm:col-span-2";
+              } else if (aspectRatio < 1) {
+                grow = "h-full aspect-tall";
+                spans = "md:row-span-2";
+              } else {
+                grow = "aspect-video";
+              }
+              const detectionType = getDetectionType(camera.name);
+              return (
+                <div key={camera.name} className={`relative ${spans}`}>
+                  {motionData ? (
+                    <>
+                      <PreviewPlayer
+                        className={`rounded-lg md:rounded-2xl ${spans} ${grow}`}
+                        camera={camera.name}
+                        timeRange={currentTimeRange}
+                        startTime={previewStart}
+                        cameraPreviews={relevantPreviews}
+                        isScrubbing={scrubbing}
+                        onControllerReady={(controller) => {
+                          videoPlayersRef.current[camera.name] = controller;
+                        }}
+                        onClick={() =>
+                          onOpenRecording({
+                            camera: camera.name,
+                            startTime: Math.min(
+                              currentTime,
+                              Date.now() / 1000 - 30,
+                            ),
+                            severity: "significant_motion",
+                          })
+                        }
+                      />
+                      <div
+                        className={`review-item-ring pointer-events-none absolute inset-0 z-20 size-full rounded-lg outline outline-[3px] -outline-offset-[2.8px] ${detectionType ? `outline-severity_${detectionType} shadow-severity_${detectionType}` : "outline-transparent duration-500"}`}
+                      />
+                      <div className="absolute bottom-2 right-2 z-30">
+                        <DropdownMenu>
+                          <DropdownMenuTrigger asChild>
+                            <BlurredIconButton
+                              aria-label={t("motionSearch.openMenu")}
+                              onClick={(e) => e.stopPropagation()}
+                            >
+                              <FiMoreVertical className="size-5" />
+                            </BlurredIconButton>
+                          </DropdownMenuTrigger>
+                          <DropdownMenuContent align="end">
+                            <DropdownMenuItem
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                setMotionPreviewsCamera(camera.name);
+                              }}
+                            >
+                              {t("motionPreviews.menuItem")}
+                            </DropdownMenuItem>
+                            <DropdownMenuItem
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                setMotionSearchCamera(camera.name);
+                              }}
+                            >
+                              {t("motionSearch.menuItem")}
+                            </DropdownMenuItem>
+                          </DropdownMenuContent>
+                        </DropdownMenu>
+                      </div>
+                    </>
+                  ) : (
+                    <Skeleton
+                      className={`size-full rounded-lg md:rounded-2xl ${spans} ${grow}`}
+                    />
+                  )}
+                </div>
+              );
+            })}
+          </div>
+        </div>
+      )}
+      {!selectedMotionPreviewCamera && (
+        <div className="no-scrollbar w-[55px] overflow-y-auto md:w-[100px]">
+          {motionData ? (
+            <MotionReviewTimeline
+              segmentDuration={segmentDuration}
+              timestampSpread={15}
+              timelineStart={timeRangeSegments.end}
+              timelineEnd={timeRangeSegments.start}
+              motionOnly={motionOnly}
+              showHandlebar
+              handlebarTime={currentTime}
+              setHandlebarTime={setCurrentTime}
+              events={reviewItems?.all ?? []}
+              motion_events={motionData ?? []}
+              contentRef={contentRef}
+              onHandlebarDraggingChange={(scrubbing) => {
+                if (playing && scrubbing) {
+                  setPlaying(false);
+                }
 
-      <VideoControls
+                setScrubbing(scrubbing);
-        className="absolute bottom-16 left-1/2 -translate-x-1/2 bg-secondary"
+              }}
-        features={{
+              dense={isMobileOnly}
-          volume: false,
+              isZooming={false}
-          seek: true,
+              zoomDirection={null}
-          playbackRate: true,
+              alwaysShowMotionLine={true}
-          fullscreen: false,
+            />
-        }}
+          ) : (
-        isPlaying={playing}
+            <Skeleton className="size-full" />
-        show={!scrubbing || controlsOpen}
+          )}
-        playbackRates={[4, 8, 12, 16]}
+        </div>
-        playbackRate={playbackRate}
+      )}
-        setControlsOpen={setControlsOpen}
-        onPlayPause={setPlaying}
-        onSeek={(diff) => {
-          const wasPlaying = playing;
 
-          if (wasPlaying) {
+      {!selectedMotionPreviewCamera && (
-            setPlaying(false);
+        <VideoControls
-          }
+          className="absolute bottom-16 left-1/2 -translate-x-1/2 bg-secondary"
+          features={{
+            volume: false,
+            seek: true,
+            playbackRate: true,
+            fullscreen: false,
+          }}
+          isPlaying={playing}
+          show={!scrubbing || controlsOpen}
+          playbackRates={[4, 8, 12, 16]}
+          playbackRate={playbackRate}
+          setControlsOpen={setControlsOpen}
+          onPlayPause={setPlaying}
+          onSeek={(diff) => {
+            const wasPlaying = playing;
 
-          setCurrentTime(currentTime + diff);
+            if (wasPlaying) {
+              setPlaying(false);
+            }
 
-          if (wasPlaying) {
+            setCurrentTime(currentTime + diff);
-            setTimeout(() => setPlaying(true), 100);
+
-          }
+            if (wasPlaying) {
-        }}
+              setTimeout(() => setPlaying(true), 100);
-        onSetPlaybackRate={setPlaybackRate}
+            }
-      />
+          }}
+          onSetPlaybackRate={setPlaybackRate}
+        />
+      )}
     </>
   );
 }

web/src/views/events/MotionPreviewsPane.tsx

@@ -0,0 +1,898 @@
+import { MotionOnlyRange } from "@/hooks/use-camera-activity";
+import { Preview } from "@/types/preview";
+import {
+  MutableRefObject,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+} from "react";
+import { isCurrentHour } from "@/utils/dateUtil";
+import { useTranslation } from "react-i18next";
+import { CameraConfig } from "@/types/frigateConfig";
+import useSWR from "swr";
+import { baseUrl } from "@/api/baseUrl";
+import { Recording } from "@/types/record";
+import { useResizeObserver } from "@/hooks/resize-observer";
+import { Skeleton } from "@/components/ui/skeleton";
+import ActivityIndicator from "@/components/indicators/activity-indicator";
+import TimeAgo from "@/components/dynamic/TimeAgo";
+import { useFormattedTimestamp } from "@/hooks/use-date-utils";
+import { FrigateConfig } from "@/types/frigateConfig";
+
+const MOTION_HEATMAP_GRID_SIZE = 16;
+const MIN_MOTION_CELL_ALPHA = 0.06;
+
+function getPreviewForMotionRange(
+  cameraPreviews: Preview[],
+  cameraName: string,
+  range: MotionOnlyRange,
+) {
+  const matchingPreviews = cameraPreviews.filter(
+    (preview) =>
+      preview.camera === cameraName &&
+      preview.end > range.start_time &&
+      preview.start < range.end_time,
+  );
+
+  if (!matchingPreviews.length) {
+    return;
+  }
+
+  const getOverlap = (preview: Preview) =>
+    Math.max(
+      0,
+      Math.min(preview.end, range.end_time) -
+        Math.max(preview.start, range.start_time),
+    );
+
+  return matchingPreviews.reduce((best, current) => {
+    return getOverlap(current) > getOverlap(best) ? current : best;
+  });
+}
+
+function getRangeOverlapSeconds(
+  rangeStart: number,
+  rangeEnd: number,
+  recordingStart: number,
+  recordingEnd: number,
+) {
+  return Math.max(
+    0,
+    Math.min(rangeEnd, recordingEnd) - Math.max(rangeStart, recordingStart),
+  );
+}
+
+function getMotionHeatmapForRange(
+  recordings: Recording[],
+  range: MotionOnlyRange,
+) {
+  const weightedHeatmap = new Map<number, number>();
+  let totalWeight = 0;
+
+  recordings.forEach((recording) => {
+    const overlapSeconds = getRangeOverlapSeconds(
+      range.start_time,
+      range.end_time,
+      recording.start_time,
+      recording.end_time,
+    );
+
+    if (overlapSeconds <= 0) {
+      return;
+    }
+
+    totalWeight += overlapSeconds;
+
+    if (!recording.motion_heatmap) {
+      return;
+    }
+
+    Object.entries(recording.motion_heatmap).forEach(
+      ([cellIndex, intensity]) => {
+        const index = Number(cellIndex);
+        const level = Number(intensity);
+
+        if (Number.isNaN(index) || Number.isNaN(level) || level <= 0) {
+          return;
+        }
+
+        const existingWeight = weightedHeatmap.get(index) ?? 0;
+        weightedHeatmap.set(index, existingWeight + level * overlapSeconds);
+      },
+    );
+  });
+
+  if (!totalWeight || weightedHeatmap.size === 0) {
+    return null;
+  }
+
+  const mergedHeatmap: Record<string, number> = {};
+  weightedHeatmap.forEach((weightedLevel, index) => {
+    const normalizedLevel = Math.max(
+      0,
+      Math.min(255, Math.round(weightedLevel / totalWeight)),
+    );
+
+    if (normalizedLevel > 0) {
+      mergedHeatmap[index.toString()] = normalizedLevel;
+    }
+  });
+
+  return Object.keys(mergedHeatmap).length > 0 ? mergedHeatmap : null;
+}
+
+type MotionPreviewClipProps = {
+  cameraName: string;
+  range: MotionOnlyRange;
+  playbackRate: number;
+  preview?: Preview;
+  fallbackFrameTimes?: number[];
+  motionHeatmap?: Record<string, number> | null;
+  nonMotionAlpha: number;
+  isVisible: boolean;
+  onSeek: (timestamp: number) => void;
+};
+
+function MotionPreviewClip({
+  cameraName,
+  range,
+  playbackRate,
+  preview,
+  fallbackFrameTimes,
+  motionHeatmap,
+  nonMotionAlpha,
+  isVisible,
+  onSeek,
+}: MotionPreviewClipProps) {
+  const { t } = useTranslation(["views/events", "common"]);
+  const { data: config } = useSWR<FrigateConfig>("config");
+  const videoRef = useRef<HTMLVideoElement | null>(null);
+  const dimOverlayCanvasRef = useRef<HTMLCanvasElement | null>(null);
+  const overlayContainerRef = useRef<HTMLDivElement | null>(null);
+  const [{ width: overlayWidth, height: overlayHeight }] =
+    useResizeObserver(overlayContainerRef);
+  const [videoLoaded, setVideoLoaded] = useState(false);
+  const [videoPlaying, setVideoPlaying] = useState(false);
+  const [fallbackImageLoaded, setFallbackImageLoaded] = useState(false);
+  const [mediaDimensions, setMediaDimensions] = useState<{
+    width: number;
+    height: number;
+  } | null>(null);
+
+  const [fallbackFrameIndex, setFallbackFrameIndex] = useState(0);
+  const [fallbackFramesReady, setFallbackFramesReady] = useState(false);
+
+  const formattedDate = useFormattedTimestamp(
+    range.start_time,
+    config?.ui.time_format == "24hour"
+      ? t("time.formattedTimestampMonthDayHourMinute.24hour", {
+          ns: "common",
+        })
+      : t("time.formattedTimestampMonthDayHourMinute.12hour", {
+          ns: "common",
+        }),
+    config?.ui.timezone,
+  );
+  const fallbackFrameSrcs = useMemo(() => {
+    if (!fallbackFrameTimes || fallbackFrameTimes.length === 0) {
+      return [] as string[];
+    }
+
+    return fallbackFrameTimes.map(
+      (frameTime) =>
+        `${baseUrl}api/preview/preview_${cameraName}-${frameTime}.webp/thumbnail.webp`,
+    );
+  }, [cameraName, fallbackFrameTimes]);
+
+  useEffect(() => {
+    setFallbackFrameIndex(0);
+    setFallbackFramesReady(false);
+  }, [range.start_time, range.end_time, fallbackFrameTimes]);
+
+  useEffect(() => {
+    if (fallbackFrameSrcs.length === 0) {
+      setFallbackFramesReady(false);
+      return;
+    }
+
+    let cancelled = false;
+
+    const preloadFrames = async () => {
+      await Promise.allSettled(
+        fallbackFrameSrcs.map(
+          (src) =>
+            new Promise<void>((resolve) => {
+              const image = new Image();
+              image.onload = () => resolve();
+              image.onerror = () => resolve();
+              image.src = src;
+            }),
+        ),
+      );
+
+      if (!cancelled) {
+        setFallbackFramesReady(true);
+      }
+    };
+
+    void preloadFrames();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [fallbackFrameSrcs]);
+
+  useEffect(() => {
+    if (!fallbackFramesReady || fallbackFrameSrcs.length <= 1 || !isVisible) {
+      return;
+    }
+
+    const intervalMs = Math.max(
+      50,
+      Math.round(1000 / Math.max(1, playbackRate)),
+    );
+    const intervalId = window.setInterval(() => {
+      setFallbackFrameIndex((previous) => {
+        return (previous + 1) % fallbackFrameSrcs.length;
+      });
+    }, intervalMs);
+
+    return () => {
+      window.clearInterval(intervalId);
+    };
+  }, [fallbackFrameSrcs.length, fallbackFramesReady, isVisible, playbackRate]);
+
+  const fallbackFrameSrc = useMemo(() => {
+    if (fallbackFrameSrcs.length === 0) {
+      return undefined;
+    }
+
+    return fallbackFrameSrcs[fallbackFrameIndex] ?? fallbackFrameSrcs[0];
+  }, [fallbackFrameIndex, fallbackFrameSrcs]);
+
+  useEffect(() => {
+    setVideoLoaded(false);
+    setVideoPlaying(false);
+    setMediaDimensions(null);
+  }, [preview?.src]);
+
+  useEffect(() => {
+    if (!preview || !isVisible || videoLoaded || !videoRef.current) {
+      return;
+    }
+
+    if (videoRef.current.currentSrc || videoRef.current.error) {
+      setVideoLoaded(true);
+    }
+  }, [isVisible, preview, videoLoaded]);
+
+  useEffect(() => {
+    setFallbackImageLoaded(false);
+    setMediaDimensions(null);
+  }, [fallbackFrameSrcs]);
+
+  useEffect(() => {
+    if (!fallbackFrameSrc || !isVisible || !fallbackFramesReady) {
+      return;
+    }
+
+    setFallbackImageLoaded(true);
+  }, [fallbackFrameSrc, fallbackFramesReady, isVisible]);
+
+  const showLoadingIndicator =
+    (preview != undefined && isVisible && !videoPlaying) ||
+    (fallbackFrameSrc != undefined && isVisible && !fallbackImageLoaded);
+
+  const clipStart = useMemo(() => {
+    if (!preview) {
+      return 0;
+    }
+
+    return Math.max(0, range.start_time - preview.start);
+  }, [preview, range.start_time]);
+
+  const clipEnd = useMemo(() => {
+    if (!preview) {
+      return 0;
+    }
+
+    const previewDuration = preview.end - preview.start;
+    return Math.min(
+      previewDuration,
+      Math.max(clipStart + 0.1, range.end_time - preview.start),
+    );
+  }, [clipStart, preview, range.end_time]);
+
+  const resetPlayback = useCallback(() => {
+    if (!videoRef.current || !preview) {
+      return;
+    }
+
+    videoRef.current.currentTime = clipStart;
+    videoRef.current.playbackRate = playbackRate;
+  }, [clipStart, playbackRate, preview]);
+
+  useEffect(() => {
+    if (!videoRef.current || !preview) {
+      return;
+    }
+
+    if (!isVisible) {
+      videoRef.current.pause();
+      videoRef.current.currentTime = clipStart;
+      return;
+    }
+
+    if (videoRef.current.readyState >= 2) {
+      resetPlayback();
+      void videoRef.current.play().catch(() => undefined);
+    }
+  }, [clipStart, isVisible, preview, resetPlayback]);
+
+  const drawDimOverlay = useCallback(() => {
+    if (!dimOverlayCanvasRef.current) {
+      return;
+    }
+
+    const canvas = dimOverlayCanvasRef.current;
+    const context = canvas.getContext("2d");
+
+    if (!context) {
+      return;
+    }
+
+    if (overlayWidth <= 0 || overlayHeight <= 0) {
+      return;
+    }
+
+    const width = Math.max(1, overlayWidth);
+    const height = Math.max(1, overlayHeight);
+    const dpr = window.devicePixelRatio || 1;
+    const pixelWidth = Math.max(1, Math.round(width * dpr));
+    const pixelHeight = Math.max(1, Math.round(height * dpr));
+
+    if (canvas.width !== pixelWidth || canvas.height !== pixelHeight) {
+      canvas.width = pixelWidth;
+      canvas.height = pixelHeight;
+    }
+
+    canvas.style.width = `${width}px`;
+    canvas.style.height = `${height}px`;
+
+    context.setTransform(dpr, 0, 0, dpr, 0, 0);
+    context.clearRect(0, 0, width, height);
+
+    if (!motionHeatmap) {
+      return;
+    }
+
+    // Calculate the actual rendered media area (object-contain letterboxing)
+    let drawX = 0;
+    let drawY = 0;
+    let drawWidth = width;
+    let drawHeight = height;
+
+    if (
+      mediaDimensions &&
+      mediaDimensions.width > 0 &&
+      mediaDimensions.height > 0
+    ) {
+      const containerAspect = width / height;
+      const mediaAspect = mediaDimensions.width / mediaDimensions.height;
+
+      if (mediaAspect < containerAspect) {
+        // Portrait / tall: constrained by height, bars on left and right
+        drawHeight = height;
+        drawWidth = height * mediaAspect;
+        drawX = (width - drawWidth) / 2;
+        drawY = 0;
+      } else {
+        // Wide / landscape: constrained by width, bars on top and bottom
+        drawWidth = width;
+        drawHeight = width / mediaAspect;
+        drawX = 0;
+        drawY = (height - drawHeight) / 2;
+      }
+    }
+
+    const heatmapLevels = Object.values(motionHeatmap)
+      .map((value) => Number(value))
+      .filter((value) => Number.isFinite(value) && value > 0);
+
+    const maxHeatmapLevel =
+      heatmapLevels.length > 0 ? Math.max(...heatmapLevels) : 0;
+
+    const maskCanvas = document.createElement("canvas");
+    maskCanvas.width = MOTION_HEATMAP_GRID_SIZE;
+    maskCanvas.height = MOTION_HEATMAP_GRID_SIZE;
+
+    const maskContext = maskCanvas.getContext("2d");
+    if (!maskContext) {
+      return;
+    }
+
+    const imageData = maskContext.createImageData(
+      MOTION_HEATMAP_GRID_SIZE,
+      MOTION_HEATMAP_GRID_SIZE,
+    );
+
+    for (let index = 0; index < MOTION_HEATMAP_GRID_SIZE ** 2; index++) {
+      const level = Number(motionHeatmap[index.toString()] ?? 0);
+      const normalizedLevel =
+        maxHeatmapLevel > 0
+          ? Math.min(1, Math.max(0, level / maxHeatmapLevel))
+          : 0;
+      const boostedLevel = Math.sqrt(normalizedLevel);
+      const alpha =
+        nonMotionAlpha -
+        boostedLevel * (nonMotionAlpha - MIN_MOTION_CELL_ALPHA);
+
+      const pixelOffset = index * 4;
+      imageData.data[pixelOffset] = 0;
+      imageData.data[pixelOffset + 1] = 0;
+      imageData.data[pixelOffset + 2] = 0;
+      imageData.data[pixelOffset + 3] = Math.round(
+        Math.max(0, Math.min(1, alpha)) * 255,
+      );
+    }
+
+    maskContext.putImageData(imageData, 0, 0);
+    context.imageSmoothingEnabled = true;
+    context.imageSmoothingQuality = "high";
+    context.drawImage(maskCanvas, drawX, drawY, drawWidth, drawHeight);
+  }, [
+    motionHeatmap,
+    nonMotionAlpha,
+    overlayHeight,
+    overlayWidth,
+    mediaDimensions,
+  ]);
+
+  useEffect(() => {
+    drawDimOverlay();
+  }, [drawDimOverlay]);
+
+  return (
+    <div
+      ref={overlayContainerRef}
+      className="relative aspect-video size-full cursor-pointer overflow-hidden rounded-lg bg-black md:rounded-2xl"
+      onClick={() => onSeek(range.start_time)}
+    >
+      {showLoadingIndicator && (
+        <Skeleton className="absolute inset-0 z-10 rounded-lg md:rounded-2xl" />
+      )}
+      {preview ? (
+        <>
+          <video
+            ref={videoRef}
+            className="size-full bg-black object-contain"
+            playsInline
+            preload={isVisible ? "metadata" : "none"}
+            muted
+            autoPlay={isVisible}
+            onLoadedMetadata={() => {
+              setVideoLoaded(true);
+
+              if (videoRef.current) {
+                setMediaDimensions({
+                  width: videoRef.current.videoWidth,
+                  height: videoRef.current.videoHeight,
+                });
+              }
+
+              if (!isVisible) {
+                return;
+              }
+
+              resetPlayback();
+
+              if (videoRef.current) {
+                void videoRef.current.play().catch(() => undefined);
+              }
+            }}
+            onCanPlay={() => {
+              setVideoLoaded(true);
+
+              if (!isVisible) {
+                return;
+              }
+
+              if (videoRef.current) {
+                void videoRef.current.play().catch(() => undefined);
+              }
+            }}
+            onPlay={() => setVideoPlaying(true)}
+            onLoadedData={() => setVideoLoaded(true)}
+            onError={() => {
+              setVideoLoaded(true);
+              setVideoPlaying(true);
+            }}
+            onTimeUpdate={() => {
+              if (!videoRef.current || !preview || !isVisible) {
+                return;
+              }
+
+              if (videoRef.current.currentTime >= clipEnd) {
+                videoRef.current.currentTime = clipStart;
+              }
+            }}
+          >
+            {isVisible && (
+              <source
+                src={`${baseUrl}${preview.src.substring(1)}`}
+                type={preview.type}
+              />
+            )}
+          </video>
+          {motionHeatmap && (
+            <canvas
+              ref={dimOverlayCanvasRef}
+              className="pointer-events-none absolute inset-0"
+              aria-hidden="true"
+            />
+          )}
+        </>
+      ) : fallbackFrameSrc ? (
+        <>
+          <img
+            src={fallbackFrameSrc}
+            className="size-full bg-black object-contain"
+            loading="lazy"
+            alt=""
+            onLoad={(e) => {
+              setFallbackImageLoaded(true);
+              const img = e.currentTarget;
+              if (img.naturalWidth > 0 && img.naturalHeight > 0) {
+                setMediaDimensions({
+                  width: img.naturalWidth,
+                  height: img.naturalHeight,
+                });
+              }
+            }}
+            onError={() => setFallbackImageLoaded(true)}
+          />
+          {motionHeatmap && (
+            <canvas
+              ref={dimOverlayCanvasRef}
+              className="pointer-events-none absolute inset-0"
+              aria-hidden="true"
+            />
+          )}
+        </>
+      ) : (
+        <div className="flex size-full items-center justify-center text-sm text-muted-foreground">
+          {t("motionPreviews.noPreview")}
+        </div>
+      )}
+
+      <div className="pointer-events-none absolute bottom-0 left-0 right-0 z-30 p-2">
+        <div className="flex flex-col items-start text-xs text-white/90 drop-shadow-lg">
+          {range.end_time ? (
+            <TimeAgo time={range.start_time * 1000} dense />
+          ) : (
+            <ActivityIndicator size={14} />
+          )}
+          {formattedDate}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+type MotionPreviewsPaneProps = {
+  camera: CameraConfig;
+  contentRef: MutableRefObject<HTMLDivElement | null>;
+  cameraPreviews: Preview[];
+  motionRanges: MotionOnlyRange[];
+  isLoadingMotionRanges?: boolean;
+  playbackRate: number;
+  nonMotionAlpha: number;
+  onSeek: (timestamp: number) => void;
+};
+
+export default function MotionPreviewsPane({
+  camera,
+  contentRef,
+  cameraPreviews,
+  motionRanges,
+  isLoadingMotionRanges = false,
+  playbackRate,
+  nonMotionAlpha,
+  onSeek,
+}: MotionPreviewsPaneProps) {
+  const { t } = useTranslation(["views/events"]);
+  const [scrollContainer, setScrollContainer] = useState<HTMLDivElement | null>(
+    null,
+  );
+
+  const [windowVisible, setWindowVisible] = useState(true);
+  useEffect(() => {
+    const visibilityListener = () => {
+      setWindowVisible(document.visibilityState == "visible");
+    };
+
+    addEventListener("visibilitychange", visibilityListener);
+
+    return () => {
+      removeEventListener("visibilitychange", visibilityListener);
+    };
+  }, []);
+
+  const [visibleClips, setVisibleClips] = useState<string[]>([]);
+  const [hasVisibilityData, setHasVisibilityData] = useState(false);
+  const clipObserver = useRef<IntersectionObserver | null>(null);
+
+  const recordingTimeRange = useMemo(() => {
+    if (!motionRanges.length) {
+      return null;
+    }
+
+    return motionRanges.reduce(
+      (bounds, range) => ({
+        after: Math.min(bounds.after, range.start_time),
+        before: Math.max(bounds.before, range.end_time),
+      }),
+      {
+        after: motionRanges[0].start_time,
+        before: motionRanges[0].end_time,
+      },
+    );
+  }, [motionRanges]);
+
+  const { data: cameraRecordings } = useSWR<Recording[]>(
+    recordingTimeRange
+      ? [
+          `${camera.name}/recordings`,
+          {
+            after: Math.floor(recordingTimeRange.after),
+            before: Math.ceil(recordingTimeRange.before),
+          },
+        ]
+      : null,
+    {
+      revalidateOnFocus: false,
+      revalidateOnReconnect: false,
+    },
+  );
+  const { data: previewFrames } = useSWR<string[]>(
+    recordingTimeRange
+      ? `preview/${camera.name}/start/${Math.floor(recordingTimeRange.after)}/end/${Math.ceil(recordingTimeRange.before)}/frames`
+      : null,
+    {
+      revalidateOnFocus: false,
+      revalidateOnReconnect: false,
+    },
+  );
+
+  const previewFrameTimes = useMemo(() => {
+    if (!previewFrames) {
+      return [] as number[];
+    }
+
+    return previewFrames
+      .map((frame) => {
+        const timestampPart = frame.split("-").at(-1)?.replace(".webp", "");
+        return timestampPart ? Number(timestampPart) : NaN;
+      })
+      .filter((value) => Number.isFinite(value))
+      .sort((a, b) => a - b);
+  }, [previewFrames]);
+
+  const getFallbackFrameTimesForRange = useCallback(
+    (range: MotionOnlyRange) => {
+      if (!isCurrentHour(range.end_time) || previewFrameTimes.length === 0) {
+        return [] as number[];
+      }
+
+      const inRangeFrames = previewFrameTimes.filter(
+        (frameTime) =>
+          frameTime >= range.start_time && frameTime <= range.end_time,
+      );
+
+      // Use all in-range frames when enough data exists for natural animation
+      if (inRangeFrames.length > 1) {
+        return inRangeFrames;
+      }
+
+      // If sparse, keep the single in-range frame and add only the next 2 frames
+      if (inRangeFrames.length === 1) {
+        const inRangeFrame = inRangeFrames[0];
+        const nextFrames = previewFrameTimes
+          .filter((frameTime) => frameTime > inRangeFrame)
+          .slice(0, 2);
+
+        return [inRangeFrame, ...nextFrames];
+      }
+
+      const nextFramesFromStart = previewFrameTimes
+        .filter((frameTime) => frameTime >= range.start_time)
+        .slice(0, 3);
+      // If no in-range frame exists, take up to 3 frames starting at clip start
+      if (nextFramesFromStart.length > 0) {
+        return nextFramesFromStart;
+      }
+
+      const lastFrame = previewFrameTimes.at(-1);
+      return lastFrame != undefined ? [lastFrame] : [];
+    },
+    [previewFrameTimes],
+  );
+
+  const setContentNode = useCallback(
+    (node: HTMLDivElement | null) => {
+      contentRef.current = node;
+      setScrollContainer(node);
+    },
+    [contentRef],
+  );
+
+  useEffect(() => {
+    if (!scrollContainer) {
+      return;
+    }
+
+    const visibleClipIds = new Set<string>();
+    clipObserver.current = new IntersectionObserver(
+      (entries) => {
+        setHasVisibilityData(true);
+
+        entries.forEach((entry) => {
+          const clipId = (entry.target as HTMLElement).dataset.clipId;
+
+          if (!clipId) {
+            return;
+          }
+
+          if (entry.isIntersecting) {
+            visibleClipIds.add(clipId);
+          } else {
+            visibleClipIds.delete(clipId);
+          }
+        });
+
+        const rootRect = scrollContainer.getBoundingClientRect();
+        const prunedVisibleClipIds = [...visibleClipIds].filter((clipId) => {
+          const clipElement = scrollContainer.querySelector<HTMLElement>(
+            `[data-clip-id="${clipId}"]`,
+          );
+
+          if (!clipElement) {
+            return false;
+          }
+
+          const clipRect = clipElement.getBoundingClientRect();
+
+          return (
+            clipRect.bottom > rootRect.top && clipRect.top < rootRect.bottom
+          );
+        });
+
+        setVisibleClips(prunedVisibleClipIds);
+      },
+      {
+        root: scrollContainer,
+        threshold: 0,
+      },
+    );
+
+    scrollContainer
+      .querySelectorAll<HTMLElement>("[data-clip-id]")
+      .forEach((node) => {
+        clipObserver.current?.observe(node);
+      });
+
+    return () => {
+      clipObserver.current?.disconnect();
+    };
+  }, [scrollContainer]);
+
+  const clipRef = useCallback((node: HTMLElement | null) => {
+    if (!clipObserver.current) {
+      return;
+    }
+
+    try {
+      if (node) {
+        clipObserver.current.observe(node);
+      }
+    } catch {
+      // no op
+    }
+  }, []);
+
+  const clipData = useMemo(
+    () =>
+      motionRanges
+        .filter((range) => range.end_time > range.start_time)
+        .sort((left, right) => right.start_time - left.start_time)
+        .map((range) => {
+          const preview = getPreviewForMotionRange(
+            cameraPreviews,
+            camera.name,
+            range,
+          );
+
+          return {
+            range,
+            preview,
+            fallbackFrameTimes: !preview
+              ? getFallbackFrameTimesForRange(range)
+              : undefined,
+            motionHeatmap: getMotionHeatmapForRange(
+              cameraRecordings ?? [],
+              range,
+            ),
+          };
+        }),
+    [
+      cameraPreviews,
+      camera.name,
+      cameraRecordings,
+      getFallbackFrameTimesForRange,
+      motionRanges,
+    ],
+  );
+
+  const hasCurrentHourRanges = useMemo(
+    () => motionRanges.some((range) => isCurrentHour(range.end_time)),
+    [motionRanges],
+  );
+
+  const isLoadingPane =
+    isLoadingMotionRanges ||
+    (motionRanges.length > 0 && cameraRecordings == undefined) ||
+    (hasCurrentHourRanges && previewFrames == undefined);
+
+  if (isLoadingPane) {
+    return (
+      <ActivityIndicator className="absolute left-1/2 top-1/2 -translate-x-1/2 -translate-y-1/2" />
+    );
+  }
+
+  return (
+    <div className="flex min-h-0 flex-1 flex-col gap-3 overflow-hidden px-1 md:mx-2 md:gap-4">
+      <div
+        ref={setContentNode}
+        className="no-scrollbar min-h-0 flex-1 overflow-y-auto"
+      >
+        {clipData.length === 0 ? (
+          <div className="flex h-full items-center justify-center text-lg text-primary">
+            {t("motionPreviews.empty")}
+          </div>
+        ) : (
+          <div className="grid grid-cols-1 gap-2 pb-2 sm:grid-cols-2 md:gap-4 xl:grid-cols-4">
+            {clipData.map(
+              ({ range, preview, fallbackFrameTimes, motionHeatmap }, idx) => (
+                <div
+                  key={`${camera.name}-${range.start_time}-${range.end_time}-${preview?.src ?? "none"}-${idx}`}
+                  data-clip-id={`${camera.name}-${range.start_time}-${range.end_time}-${idx}`}
+                  ref={clipRef}
+                >
+                  <MotionPreviewClip
+                    cameraName={camera.name}
+                    range={range}
+                    playbackRate={playbackRate}
+                    preview={preview}
+                    fallbackFrameTimes={fallbackFrameTimes}
+                    motionHeatmap={motionHeatmap}
+                    nonMotionAlpha={nonMotionAlpha}
+                    isVisible={
+                      windowVisible &&
+                      (visibleClips.includes(
+                        `${camera.name}-${range.start_time}-${range.end_time}-${idx}`,
+                      ) ||
+                        (!hasVisibilityData && idx < 8))
+                    }
+                    onSeek={onSeek}
+                  />
+                </div>
+              ),
+            )}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}

web/src/views/motion-search/MotionSearchDialog.tsx

@@ -0,0 +1,708 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { useTranslation } from "react-i18next";
+import { isDesktop, isIOS, isMobile } from "react-device-detect";
+import { FaArrowRight, FaCalendarAlt, FaCheckCircle } from "react-icons/fa";
+import { MdOutlineRestartAlt, MdUndo } from "react-icons/md";
+
+import { FrigateConfig } from "@/types/frigateConfig";
+import { TimeRange } from "@/types/timeline";
+
+import { Button } from "@/components/ui/button";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { Drawer, DrawerContent } from "@/components/ui/drawer";
+import { Label } from "@/components/ui/label";
+import { Slider } from "@/components/ui/slider";
+import { Switch } from "@/components/ui/switch";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from "@/components/ui/popover";
+import { SelectSeparator } from "@/components/ui/select";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/ui/tooltip";
+import ActivityIndicator from "@/components/indicators/activity-indicator";
+import { CameraNameLabel } from "@/components/camera/FriendlyNameLabel";
+import { TimezoneAwareCalendar } from "@/components/overlay/ReviewActivityCalendar";
+
+import { useApiHost } from "@/api";
+import { useResizeObserver } from "@/hooks/resize-observer";
+import { useFormattedTimestamp } from "@/hooks/use-date-utils";
+import { getUTCOffset } from "@/utils/dateUtil";
+import { cn } from "@/lib/utils";
+import MotionSearchROICanvas from "./MotionSearchROICanvas";
+import { TransformComponent, TransformWrapper } from "react-zoom-pan-pinch";
+
+type MotionSearchDialogProps = {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  config: FrigateConfig;
+  cameras: string[];
+  selectedCamera: string | null;
+  onCameraSelect: (camera: string) => void;
+  cameraLocked?: boolean;
+  polygonPoints: number[][];
+  setPolygonPoints: React.Dispatch<React.SetStateAction<number[][]>>;
+  isDrawingROI: boolean;
+  setIsDrawingROI: React.Dispatch<React.SetStateAction<boolean>>;
+  parallelMode: boolean;
+  setParallelMode: React.Dispatch<React.SetStateAction<boolean>>;
+  threshold: number;
+  setThreshold: React.Dispatch<React.SetStateAction<number>>;
+  minArea: number;
+  setMinArea: React.Dispatch<React.SetStateAction<number>>;
+  frameSkip: number;
+  setFrameSkip: React.Dispatch<React.SetStateAction<number>>;
+  maxResults: number;
+  setMaxResults: React.Dispatch<React.SetStateAction<number>>;
+  searchRange?: TimeRange;
+  setSearchRange: React.Dispatch<React.SetStateAction<TimeRange | undefined>>;
+  defaultRange: TimeRange;
+  isSearching: boolean;
+  canStartSearch: boolean;
+  onStartSearch: () => void;
+  timezone?: string;
+};
+
+export default function MotionSearchDialog({
+  open,
+  onOpenChange,
+  config,
+  cameras,
+  selectedCamera,
+  onCameraSelect,
+  cameraLocked = false,
+  polygonPoints,
+  setPolygonPoints,
+  isDrawingROI,
+  setIsDrawingROI,
+  parallelMode,
+  setParallelMode,
+  threshold,
+  setThreshold,
+  minArea,
+  setMinArea,
+  frameSkip,
+  setFrameSkip,
+  maxResults,
+  setMaxResults,
+  searchRange,
+  setSearchRange,
+  defaultRange,
+  isSearching,
+  canStartSearch,
+  onStartSearch,
+  timezone,
+}: MotionSearchDialogProps) {
+  const { t } = useTranslation(["views/motionSearch", "common"]);
+  const apiHost = useApiHost();
+  const containerRef = useRef<HTMLDivElement>(null);
+  const [{ width: containerWidth, height: containerHeight }] =
+    useResizeObserver(containerRef);
+  const [imageLoaded, setImageLoaded] = useState(false);
+
+  const cameraConfig = useMemo(() => {
+    if (!selectedCamera) return undefined;
+    return config.cameras[selectedCamera];
+  }, [config, selectedCamera]);
+
+  const polygonClosed = useMemo(
+    () => !isDrawingROI && polygonPoints.length >= 3,
+    [isDrawingROI, polygonPoints.length],
+  );
+
+  const undoPolygonPoint = useCallback(() => {
+    if (polygonPoints.length === 0 || isSearching) {
+      return;
+    }
+
+    setPolygonPoints((prev) => prev.slice(0, -1));
+    setIsDrawingROI(true);
+  }, [isSearching, setIsDrawingROI, setPolygonPoints, polygonPoints.length]);
+
+  const resetPolygon = useCallback(() => {
+    if (polygonPoints.length === 0 || isSearching) {
+      return;
+    }
+
+    setPolygonPoints([]);
+    setIsDrawingROI(true);
+  }, [isSearching, polygonPoints.length, setIsDrawingROI, setPolygonPoints]);
+
+  const imageSize = useMemo(() => {
+    if (!containerWidth || !containerHeight || !cameraConfig) {
+      return { width: 0, height: 0 };
+    }
+
+    const cameraAspectRatio =
+      cameraConfig.detect.width / cameraConfig.detect.height;
+    const availableAspectRatio = containerWidth / containerHeight;
+
+    if (availableAspectRatio >= cameraAspectRatio) {
+      return {
+        width: containerHeight * cameraAspectRatio,
+        height: containerHeight,
+      };
+    }
+
+    return {
+      width: containerWidth,
+      height: containerWidth / cameraAspectRatio,
+    };
+  }, [containerWidth, containerHeight, cameraConfig]);
+
+  useEffect(() => {
+    setImageLoaded(false);
+  }, [selectedCamera]);
+
+  const Overlay = isDesktop ? Dialog : Drawer;
+  const Content = isDesktop ? DialogContent : DrawerContent;
+
+  return (
+    <Overlay open={open} onOpenChange={onOpenChange}>
+      <Content
+        {...(isDesktop
+          ? {
+              onOpenAutoFocus: (event: Event) => event.preventDefault(),
+            }
+          : {})}
+        className={cn(
+          isDesktop
+            ? "scrollbar-container max-h-[90dvh] overflow-y-auto sm:max-w-[75%]"
+            : "flex max-h-[90dvh] flex-col overflow-hidden rounded-lg pb-4",
+        )}
+      >
+        <div
+          className={cn(
+            !isDesktop &&
+              "scrollbar-container flex min-h-0 w-full flex-col gap-4 overflow-y-auto overflow-x-hidden px-4",
+          )}
+        >
+          <DialogHeader>
+            <DialogTitle className="mt-4 md:mt-auto">
+              {t("dialog.title")}
+            </DialogTitle>
+            <p className="my-1 text-sm text-muted-foreground">
+              {t("description")}
+            </p>
+          </DialogHeader>
+          <DialogDescription className="hidden" />
+          <div
+            className={cn(
+              "flex gap-4",
+              isDesktop ? "mt-4 flex-row" : "flex-col landscape:flex-row",
+            )}
+          >
+            <div
+              className={cn("flex flex-1 flex-col", !isDesktop && "min-w-0")}
+            >
+              {(!cameraLocked || !selectedCamera) && (
+                <div className="flex items-end justify-between gap-2">
+                  <div className="mt-2 md:min-w-64">
+                    <div className="grid gap-2">
+                      <Label htmlFor="motion-search-camera">
+                        {t("dialog.cameraLabel")}
+                      </Label>
+                      <Select
+                        value={selectedCamera ?? undefined}
+                        onValueChange={(value) => onCameraSelect(value)}
+                      >
+                        <SelectTrigger id="motion-search-camera">
+                          <SelectValue placeholder={t("selectCamera")} />
+                        </SelectTrigger>
+                        <SelectContent>
+                          {cameras.map((camera) => (
+                            <SelectItem
+                              key={camera}
+                              value={camera}
+                              className="cursor-pointer hover:bg-accent hover:text-accent-foreground"
+                            >
+                              <CameraNameLabel camera={camera} />
+                            </SelectItem>
+                          ))}
+                        </SelectContent>
+                      </Select>
+                    </div>
+                  </div>
+                </div>
+              )}
+
+              <TransformWrapper minScale={1.0} wheel={{ smoothStep: 0.005 }}>
+                <div className="flex flex-col gap-2">
+                  <TransformComponent
+                    wrapperStyle={{
+                      width: "100%",
+                      height: isDesktop ? "100%" : "auto",
+                    }}
+                    contentStyle={{
+                      position: "relative",
+                      width: "100%",
+                      height: "100%",
+                    }}
+                  >
+                    <div
+                      ref={containerRef}
+                      className="relative flex w-full items-center justify-center overflow-hidden rounded-lg border bg-secondary"
+                      style={{ aspectRatio: "16 / 9" }}
+                    >
+                      {selectedCamera && cameraConfig && imageSize.width > 0 ? (
+                        <div
+                          className="relative"
+                          style={{
+                            width: imageSize.width,
+                            height: imageSize.height,
+                          }}
+                        >
+                          <img
+                            alt={t("dialog.previewAlt", {
+                              camera: selectedCamera,
+                            })}
+                            src={`${apiHost}api/${selectedCamera}/latest.jpg?h=500`}
+                            className="h-full w-full object-contain"
+                            onLoad={() => setImageLoaded(true)}
+                          />
+                          {!imageLoaded && (
+                            <div className="absolute inset-0 flex items-center justify-center">
+                              <ActivityIndicator className="h-8 w-8" />
+                            </div>
+                          )}
+                          <MotionSearchROICanvas
+                            camera={selectedCamera}
+                            width={cameraConfig.detect.width}
+                            height={cameraConfig.detect.height}
+                            polygonPoints={polygonPoints}
+                            setPolygonPoints={setPolygonPoints}
+                            isDrawing={isDrawingROI}
+                            setIsDrawing={setIsDrawingROI}
+                            isInteractive={true}
+                          />
+                        </div>
+                      ) : (
+                        <div className="flex h-full w-full items-center justify-center text-sm text-muted-foreground">
+                          {t("selectCamera")}
+                        </div>
+                      )}
+                    </div>
+                  </TransformComponent>
+                </div>
+              </TransformWrapper>
+
+              {selectedCamera && (
+                <div className="my-2 flex w-full flex-row justify-between rounded-md bg-background_alt p-2 text-sm">
+                  <div className="my-1 inline-flex items-center">
+                    {t("polygonControls.points", {
+                      count: polygonPoints.length,
+                    })}
+                    {polygonClosed && <FaCheckCircle className="ml-2 size-5" />}
+                  </div>
+                  <div className="flex flex-row justify-center gap-2">
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          variant="default"
+                          className="size-6 rounded-md p-1"
+                          aria-label={t("polygonControls.undo")}
+                          disabled={polygonPoints.length === 0 || isSearching}
+                          onClick={undoPolygonPoint}
+                        >
+                          <MdUndo className="text-secondary-foreground" />
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>
+                        {t("polygonControls.undo")}
+                      </TooltipContent>
+                    </Tooltip>
+                    <Tooltip>
+                      <TooltipTrigger asChild>
+                        <Button
+                          variant="default"
+                          className="size-6 rounded-md p-1"
+                          aria-label={t("polygonControls.reset")}
+                          disabled={polygonPoints.length === 0 || isSearching}
+                          onClick={resetPolygon}
+                        >
+                          <MdOutlineRestartAlt className="text-secondary-foreground" />
+                        </Button>
+                      </TooltipTrigger>
+                      <TooltipContent>
+                        {t("polygonControls.reset")}
+                      </TooltipContent>
+                    </Tooltip>
+                  </div>
+                </div>
+              )}
+            </div>
+
+            <div
+              className={cn(
+                "flex w-full flex-col gap-4 space-y-4 lg:w-[340px]",
+                isMobile && "landscape:w-[40%] landscape:flex-shrink-0",
+              )}
+            >
+              <div className="grid gap-3">
+                <h4 className="mb-4 font-medium leading-none">
+                  {t("settings.title")}
+                </h4>
+                <div className="grid gap-4 space-y-2">
+                  <div className="grid gap-2">
+                    <Label htmlFor="threshold">{t("settings.threshold")}</Label>
+                    <div className="flex items-center gap-2">
+                      <Slider
+                        id="threshold"
+                        min={1}
+                        max={255}
+                        step={1}
+                        value={[threshold]}
+                        onValueChange={([value]) => setThreshold(value)}
+                      />
+                      <span className="w-12 text-sm">{threshold}</span>
+                    </div>
+                    <p className="text-xs text-muted-foreground">
+                      {t("settings.thresholdDesc")}
+                    </p>
+                  </div>
+                  <div className="grid gap-2">
+                    <Label htmlFor="minArea">{t("settings.minArea")}</Label>
+                    <div className="flex items-center gap-2">
+                      <Slider
+                        id="minArea"
+                        min={1}
+                        max={100}
+                        step={1}
+                        value={[minArea]}
+                        onValueChange={([value]) => setMinArea(value)}
+                      />
+                      <span className="w-12 text-sm">{minArea}%</span>
+                    </div>
+                    <p className="text-xs text-muted-foreground">
+                      {t("settings.minAreaDesc")}
+                    </p>
+                  </div>
+                  <div className="grid gap-2">
+                    <Label htmlFor="frameSkip">{t("settings.frameSkip")}</Label>
+                    <div className="flex items-center gap-2">
+                      <Slider
+                        id="frameSkip"
+                        min={1}
+                        max={60}
+                        step={1}
+                        value={[frameSkip]}
+                        onValueChange={([value]) => setFrameSkip(value)}
+                      />
+                      <span className="w-12 text-sm">{frameSkip}</span>
+                    </div>
+                    <p className="text-xs text-muted-foreground">
+                      {t("settings.frameSkipDesc")}
+                    </p>
+                  </div>
+                  <div className="grid gap-2">
+                    <div className="flex items-center justify-between gap-2">
+                      <Label htmlFor="parallelMode">
+                        {t("settings.parallelMode")}
+                      </Label>
+                      <Switch
+                        id="parallelMode"
+                        checked={parallelMode}
+                        onCheckedChange={setParallelMode}
+                      />
+                    </div>
+                    <p className="text-xs text-muted-foreground">
+                      {t("settings.parallelModeDesc")}
+                    </p>
+                  </div>
+                  <div className="grid gap-2">
+                    <Label htmlFor="maxResults">
+                      {t("settings.maxResults")}
+                    </Label>
+                    <div className="flex items-center gap-2">
+                      <Slider
+                        id="maxResults"
+                        min={1}
+                        max={200}
+                        step={1}
+                        value={[maxResults]}
+                        onValueChange={([value]) => setMaxResults(value)}
+                      />
+                      <span className="w-12 text-sm">{maxResults}</span>
+                    </div>
+                    <p className="text-xs text-muted-foreground">
+                      {t("settings.maxResultsDesc")}
+                    </p>
+                  </div>
+                </div>
+              </div>
+
+              <SearchRangeSelector
+                range={searchRange}
+                setRange={setSearchRange}
+                defaultRange={defaultRange}
+                timeFormat={config.ui?.time_format}
+                timezone={timezone}
+              />
+
+              <Button
+                className="w-full"
+                variant="select"
+                onClick={onStartSearch}
+                disabled={!canStartSearch || isSearching}
+              >
+                {t("startSearch")}
+              </Button>
+            </div>
+          </div>
+        </div>
+      </Content>
+    </Overlay>
+  );
+}
+
+type SearchRangeSelectorProps = {
+  range?: TimeRange;
+  setRange: React.Dispatch<React.SetStateAction<TimeRange | undefined>>;
+  defaultRange: TimeRange;
+  timeFormat?: "browser" | "12hour" | "24hour";
+  timezone?: string;
+};
+
+function SearchRangeSelector({
+  range,
+  setRange,
+  defaultRange,
+  timeFormat,
+  timezone,
+}: SearchRangeSelectorProps) {
+  const { t } = useTranslation(["views/motionSearch", "common"]);
+  const [startOpen, setStartOpen] = useState(false);
+  const [endOpen, setEndOpen] = useState(false);
+
+  const timezoneOffset = useMemo(
+    () =>
+      timezone ? Math.round(getUTCOffset(new Date(), timezone)) : undefined,
+    [timezone],
+  );
+  const localTimeOffset = useMemo(
+    () =>
+      Math.round(
+        getUTCOffset(
+          new Date(),
+          Intl.DateTimeFormat().resolvedOptions().timeZone,
+        ),
+      ),
+    [],
+  );
+
+  const startTime = useMemo(() => {
+    let time = range?.after ?? defaultRange.after;
+
+    if (timezoneOffset !== undefined) {
+      time = time + (timezoneOffset - localTimeOffset) * 60;
+    }
+
+    return time;
+  }, [range, defaultRange, timezoneOffset, localTimeOffset]);
+
+  const endTime = useMemo(() => {
+    let time = range?.before ?? defaultRange.before;
+
+    if (timezoneOffset !== undefined) {
+      time = time + (timezoneOffset - localTimeOffset) * 60;
+    }
+
+    return time;
+  }, [range, defaultRange, timezoneOffset, localTimeOffset]);
+
+  const formattedStart = useFormattedTimestamp(
+    startTime,
+    timeFormat === "24hour"
+      ? t("time.formattedTimestamp.24hour", { ns: "common" })
+      : t("time.formattedTimestamp.12hour", { ns: "common" }),
+  );
+  const formattedEnd = useFormattedTimestamp(
+    endTime,
+    timeFormat === "24hour"
+      ? t("time.formattedTimestamp.24hour", { ns: "common" })
+      : t("time.formattedTimestamp.12hour", { ns: "common" }),
+  );
+
+  const startClock = useMemo(() => {
+    const date = new Date(startTime * 1000);
+    return `${date.getHours().toString().padStart(2, "0")}:${date
+      .getMinutes()
+      .toString()
+      .padStart(2, "0")}:${date.getSeconds().toString().padStart(2, "0")}`;
+  }, [startTime]);
+
+  const endClock = useMemo(() => {
+    const date = new Date(endTime * 1000);
+    return `${date.getHours().toString().padStart(2, "0")}:${date
+      .getMinutes()
+      .toString()
+      .padStart(2, "0")}:${date.getSeconds().toString().padStart(2, "0")}`;
+  }, [endTime]);
+
+  return (
+    <div className="grid gap-2">
+      <Label>{t("timeRange.title")}</Label>
+      <div className="flex items-center rounded-lg bg-secondary px-2 py-1 text-secondary-foreground">
+        <FaCalendarAlt />
+        <div className="flex flex-wrap items-center">
+          <Popover
+            open={startOpen}
+            onOpenChange={(open) => {
+              if (!open) {
+                setStartOpen(false);
+              }
+            }}
+            modal={false}
+          >
+            <PopoverTrigger asChild>
+              <Button
+                className="text-primary"
+                aria-label={t("timeRange.start")}
+                variant={startOpen ? "select" : "default"}
+                size="sm"
+                onClick={() => {
+                  setStartOpen(true);
+                  setEndOpen(false);
+                }}
+              >
+                {formattedStart}
+              </Button>
+            </PopoverTrigger>
+            <PopoverContent
+              disablePortal
+              className="flex flex-col items-center"
+            >
+              <TimezoneAwareCalendar
+                timezone={timezone}
+                selectedDay={new Date(startTime * 1000)}
+                onSelect={(day) => {
+                  if (!day) {
+                    return;
+                  }
+
+                  setRange({
+                    before: endTime,
+                    after: day.getTime() / 1000 + 1,
+                  });
+                }}
+              />
+              <SelectSeparator className="bg-secondary" />
+              <input
+                className="text-md mx-4 w-full border border-input bg-background p-1 text-secondary-foreground hover:bg-accent hover:text-accent-foreground dark:[color-scheme:dark]"
+                id="startTime"
+                type="time"
+                value={startClock}
+                step={isIOS ? "60" : "1"}
+                onChange={(e) => {
+                  const clock = e.target.value;
+                  const [hour, minute, second] = isIOS
+                    ? [...clock.split(":"), "00"]
+                    : clock.split(":");
+
+                  const start = new Date(startTime * 1000);
+                  start.setHours(
+                    parseInt(hour),
+                    parseInt(minute),
+                    parseInt(second ?? 0),
+                    0,
+                  );
+                  setRange({
+                    before: endTime,
+                    after: start.getTime() / 1000,
+                  });
+                }}
+              />
+            </PopoverContent>
+          </Popover>
+          <FaArrowRight className="size-4 text-primary" />
+          <Popover
+            open={endOpen}
+            onOpenChange={(open) => {
+              if (!open) {
+                setEndOpen(false);
+              }
+            }}
+            modal={false}
+          >
+            <PopoverTrigger asChild>
+              <Button
+                className="text-primary"
+                aria-label={t("timeRange.end")}
+                variant={endOpen ? "select" : "default"}
+                size="sm"
+                onClick={() => {
+                  setEndOpen(true);
+                  setStartOpen(false);
+                }}
+              >
+                {formattedEnd}
+              </Button>
+            </PopoverTrigger>
+            <PopoverContent
+              disablePortal
+              className="flex flex-col items-center"
+            >
+              <TimezoneAwareCalendar
+                timezone={timezone}
+                selectedDay={new Date(endTime * 1000)}
+                onSelect={(day) => {
+                  if (!day) {
+                    return;
+                  }
+
+                  setRange({
+                    after: startTime,
+                    before: day.getTime() / 1000,
+                  });
+                }}
+              />
+              <SelectSeparator className="bg-secondary" />
+              <input
+                className="text-md mx-4 w-full border border-input bg-background p-1 text-secondary-foreground hover:bg-accent hover:text-accent-foreground dark:[color-scheme:dark]"
+                id="endTime"
+                type="time"
+                value={endClock}
+                step={isIOS ? "60" : "1"}
+                onChange={(e) => {
+                  const clock = e.target.value;
+                  const [hour, minute, second] = isIOS
+                    ? [...clock.split(":"), "00"]
+                    : clock.split(":");
+
+                  const end = new Date(endTime * 1000);
+                  end.setHours(
+                    parseInt(hour),
+                    parseInt(minute),
+                    parseInt(second ?? 0),
+                    0,
+                  );
+                  setRange({
+                    before: end.getTime() / 1000,
+                    after: startTime,
+                  });
+                }}
+              />
+            </PopoverContent>
+          </Popover>
+        </div>
+      </div>
+    </div>
+  );
+}

web/src/views/motion-search/MotionSearchROICanvas.tsx

@@ -0,0 +1,398 @@
+import { useCallback, useMemo, useRef } from "react";
+import { Stage, Layer, Line, Circle, Image } from "react-konva";
+import Konva from "konva";
+import type { KonvaEventObject } from "konva/lib/Node";
+import { flattenPoints } from "@/utils/canvasUtil";
+import { cn } from "@/lib/utils";
+import { useResizeObserver } from "@/hooks/resize-observer";
+
+type MotionSearchROICanvasProps = {
+  camera: string;
+  width: number;
+  height: number;
+  polygonPoints: number[][];
+  setPolygonPoints: React.Dispatch<React.SetStateAction<number[][]>>;
+  isDrawing: boolean;
+  setIsDrawing: React.Dispatch<React.SetStateAction<boolean>>;
+  isInteractive?: boolean;
+  motionHeatmap?: Record<string, number> | null;
+  showMotionHeatmap?: boolean;
+};
+
+export default function MotionSearchROICanvas({
+  width,
+  height,
+  polygonPoints,
+  setPolygonPoints,
+  isDrawing,
+  setIsDrawing,
+  isInteractive = true,
+  motionHeatmap,
+  showMotionHeatmap = false,
+}: MotionSearchROICanvasProps) {
+  const containerRef = useRef<HTMLDivElement>(null);
+  const stageRef = useRef<Konva.Stage>(null);
+  const [{ width: containerWidth, height: containerHeight }] =
+    useResizeObserver(containerRef);
+
+  const stageSize = useMemo(
+    () => ({
+      width: containerWidth > 0 ? Math.ceil(containerWidth) : 0,
+      height: containerHeight > 0 ? Math.ceil(containerHeight) : 0,
+    }),
+    [containerHeight, containerWidth],
+  );
+
+  const videoRect = useMemo(() => {
+    const stageWidth = stageSize.width;
+    const stageHeight = stageSize.height;
+    const sourceWidth = width > 0 ? width : 1;
+    const sourceHeight = height > 0 ? height : 1;
+
+    if (stageWidth <= 0 || stageHeight <= 0) {
+      return { x: 0, y: 0, width: 0, height: 0 };
+    }
+
+    const stageAspect = stageWidth / stageHeight;
+    const sourceAspect = sourceWidth / sourceHeight;
+
+    if (stageAspect > sourceAspect) {
+      const fittedHeight = stageHeight;
+      const fittedWidth = fittedHeight * sourceAspect;
+      return {
+        x: (stageWidth - fittedWidth) / 2,
+        y: 0,
+        width: fittedWidth,
+        height: fittedHeight,
+      };
+    }
+
+    const fittedWidth = stageWidth;
+    const fittedHeight = fittedWidth / sourceAspect;
+    return {
+      x: 0,
+      y: (stageHeight - fittedHeight) / 2,
+      width: fittedWidth,
+      height: fittedHeight,
+    };
+  }, [height, stageSize.height, stageSize.width, width]);
+
+  // Convert normalized points to stage coordinates
+  const scaledPoints = useMemo(() => {
+    return polygonPoints.map((point) => [
+      videoRect.x + point[0] * videoRect.width,
+      videoRect.y + point[1] * videoRect.height,
+    ]);
+  }, [
+    polygonPoints,
+    videoRect.height,
+    videoRect.width,
+    videoRect.x,
+    videoRect.y,
+  ]);
+
+  const flattenedPoints = useMemo(
+    () => flattenPoints(scaledPoints),
+    [scaledPoints],
+  );
+
+  const heatmapOverlayCanvas = useMemo(() => {
+    if (
+      !showMotionHeatmap ||
+      !motionHeatmap ||
+      videoRect.width === 0 ||
+      videoRect.height === 0
+    ) {
+      return null;
+    }
+
+    const gridSize = 16;
+    const heatmapLevels = Object.values(motionHeatmap)
+      .map((value) => Number(value))
+      .filter((value) => Number.isFinite(value) && value > 0);
+
+    const maxHeatmapLevel =
+      heatmapLevels.length > 0 ? Math.max(...heatmapLevels) : 0;
+
+    if (maxHeatmapLevel <= 0) {
+      return null;
+    }
+
+    const maskCanvas = document.createElement("canvas");
+    maskCanvas.width = gridSize;
+    maskCanvas.height = gridSize;
+
+    const maskContext = maskCanvas.getContext("2d");
+    if (!maskContext) {
+      return null;
+    }
+
+    const imageData = maskContext.createImageData(gridSize, gridSize);
+    const heatmapStops = [
+      { t: 0, r: 0, g: 0, b: 255 },
+      { t: 0.25, r: 0, g: 255, b: 255 },
+      { t: 0.5, r: 0, g: 255, b: 0 },
+      { t: 0.75, r: 255, g: 255, b: 0 },
+      { t: 1, r: 255, g: 0, b: 0 },
+    ];
+
+    const getHeatmapColor = (value: number) => {
+      const clampedValue = Math.min(1, Math.max(0, value));
+
+      const upperIndex = heatmapStops.findIndex(
+        (stop) => stop.t >= clampedValue,
+      );
+      if (upperIndex <= 0) {
+        return heatmapStops[0];
+      }
+
+      const lower = heatmapStops[upperIndex - 1];
+      const upper = heatmapStops[upperIndex];
+      const range = upper.t - lower.t;
+      const blend = range > 0 ? (clampedValue - lower.t) / range : 0;
+
+      return {
+        r: Math.round(lower.r + (upper.r - lower.r) * blend),
+        g: Math.round(lower.g + (upper.g - lower.g) * blend),
+        b: Math.round(lower.b + (upper.b - lower.b) * blend),
+      };
+    };
+
+    for (let index = 0; index < gridSize ** 2; index++) {
+      const level = Number(motionHeatmap[index.toString()] ?? 0);
+      const normalizedLevel =
+        level > 0 ? Math.min(1, Math.max(0, level / maxHeatmapLevel)) : 0;
+      const alpha =
+        level > 0
+          ? Math.min(0.95, Math.max(0.1, 0.15 + normalizedLevel * 0.5))
+          : 0;
+      const color = getHeatmapColor(normalizedLevel);
+
+      const pixelOffset = index * 4;
+      imageData.data[pixelOffset] = color.r;
+      imageData.data[pixelOffset + 1] = color.g;
+      imageData.data[pixelOffset + 2] = color.b;
+      imageData.data[pixelOffset + 3] = Math.round(alpha * 255);
+    }
+
+    maskContext.putImageData(imageData, 0, 0);
+
+    return maskCanvas;
+  }, [motionHeatmap, showMotionHeatmap, videoRect.height, videoRect.width]);
+
+  // Handle mouse click to add point
+  const handleMouseDown = useCallback(
+    (e: KonvaEventObject<MouseEvent | TouchEvent>) => {
+      if (!isInteractive || !isDrawing) return;
+      if (videoRect.width <= 0 || videoRect.height <= 0) return;
+
+      const stage = e.target.getStage();
+      if (!stage) return;
+
+      const mousePos = stage.getPointerPosition();
+      if (!mousePos) return;
+
+      const intersection = stage.getIntersection(mousePos);
+
+      // If clicking on first point and we have at least 3 points, close the polygon
+      if (polygonPoints.length >= 3 && intersection?.name() === "point-0") {
+        setIsDrawing(false);
+        return;
+      }
+
+      // Only add point if not clicking on an existing point
+      if (intersection?.getClassName() !== "Circle") {
+        const clampedX = Math.min(
+          Math.max(mousePos.x, videoRect.x),
+          videoRect.x + videoRect.width,
+        );
+        const clampedY = Math.min(
+          Math.max(mousePos.y, videoRect.y),
+          videoRect.y + videoRect.height,
+        );
+
+        // Convert to normalized coordinates (0-1)
+        const normalizedX = (clampedX - videoRect.x) / videoRect.width;
+        const normalizedY = (clampedY - videoRect.y) / videoRect.height;
+
+        setPolygonPoints([...polygonPoints, [normalizedX, normalizedY]]);
+      }
+    },
+    [
+      isDrawing,
+      polygonPoints,
+      setPolygonPoints,
+      setIsDrawing,
+      isInteractive,
+      videoRect.height,
+      videoRect.width,
+      videoRect.x,
+      videoRect.y,
+    ],
+  );
+
+  // Handle point drag
+  const handlePointDragMove = useCallback(
+    (e: KonvaEventObject<MouseEvent | TouchEvent>, index: number) => {
+      if (!isInteractive) return;
+      const stage = e.target.getStage();
+      if (!stage) return;
+
+      const pos = { x: e.target.x(), y: e.target.y() };
+
+      // Constrain to fitted video boundaries
+      pos.x = Math.max(
+        videoRect.x,
+        Math.min(pos.x, videoRect.x + videoRect.width),
+      );
+      pos.y = Math.max(
+        videoRect.y,
+        Math.min(pos.y, videoRect.y + videoRect.height),
+      );
+
+      // Convert to normalized coordinates
+      const normalizedX = (pos.x - videoRect.x) / videoRect.width;
+      const normalizedY = (pos.y - videoRect.y) / videoRect.height;
+
+      const newPoints = [...polygonPoints];
+      newPoints[index] = [normalizedX, normalizedY];
+      setPolygonPoints(newPoints);
+    },
+    [
+      polygonPoints,
+      setPolygonPoints,
+      isInteractive,
+      videoRect.height,
+      videoRect.width,
+      videoRect.x,
+      videoRect.y,
+    ],
+  );
+
+  // Handle right-click to delete point
+  const handleContextMenu = useCallback(
+    (e: KonvaEventObject<MouseEvent>, index: number) => {
+      if (!isInteractive) return;
+      e.evt.preventDefault();
+
+      if (polygonPoints.length <= 3 && !isDrawing) {
+        // Don't delete if we have a closed polygon with minimum points
+        return;
+      }
+
+      const newPoints = polygonPoints.filter((_, i) => i !== index);
+      setPolygonPoints(newPoints);
+
+      // If we deleted enough points, go back to drawing mode
+      if (newPoints.length < 3) {
+        setIsDrawing(true);
+      }
+    },
+    [polygonPoints, isDrawing, setPolygonPoints, setIsDrawing, isInteractive],
+  );
+
+  // Handle mouse hover on first point
+  const handleMouseOverPoint = useCallback(
+    (e: KonvaEventObject<MouseEvent | TouchEvent>, index: number) => {
+      if (!isInteractive) return;
+      if (!isDrawing || polygonPoints.length < 3 || index !== 0) return;
+      e.target.scale({ x: 2, y: 2 });
+    },
+    [isDrawing, isInteractive, polygonPoints.length],
+  );
+
+  const handleMouseOutPoint = useCallback(
+    (e: KonvaEventObject<MouseEvent | TouchEvent>, index: number) => {
+      if (!isInteractive) return;
+      if (index === 0) {
+        e.target.scale({ x: 1, y: 1 });
+      }
+    },
+    [isInteractive],
+  );
+
+  const vertexRadius = 6;
+  const polygonColorString = "rgba(66, 135, 245, 0.8)";
+  const polygonFillColor = "rgba(66, 135, 245, 0.2)";
+
+  return (
+    <div
+      ref={containerRef}
+      className={cn(
+        "absolute inset-0 z-10",
+        isInteractive ? "pointer-events-auto" : "pointer-events-none",
+      )}
+      style={{ cursor: isDrawing ? "crosshair" : "default" }}
+    >
+      {stageSize.width > 0 && stageSize.height > 0 && (
+        <Stage
+          ref={stageRef}
+          width={stageSize.width}
+          height={stageSize.height}
+          onMouseDown={handleMouseDown}
+          onTouchStart={handleMouseDown}
+          onContextMenu={(e) => e.evt.preventDefault()}
+          className="absolute inset-0"
+        >
+          <Layer>
+            {/* Segment heatmap overlay */}
+            {heatmapOverlayCanvas && (
+              <Image
+                image={heatmapOverlayCanvas}
+                x={videoRect.x}
+                y={videoRect.y}
+                width={videoRect.width}
+                height={videoRect.height}
+                listening={false}
+              />
+            )}
+
+            {/* Polygon outline */}
+            {scaledPoints.length > 0 && (
+              <Line
+                points={flattenedPoints}
+                stroke={polygonColorString}
+                strokeWidth={2}
+                closed={!isDrawing && scaledPoints.length >= 3}
+                fill={
+                  !isDrawing && scaledPoints.length >= 3
+                    ? polygonFillColor
+                    : undefined
+                }
+              />
+            )}
+
+            {/* Draw line from last point to cursor when drawing */}
+            {isDrawing && scaledPoints.length > 0 && (
+              <Line
+                points={flattenedPoints}
+                stroke={polygonColorString}
+                strokeWidth={2}
+                dash={[5, 5]}
+              />
+            )}
+
+            {/* Vertex points */}
+            {scaledPoints.map((point, index) => (
+              <Circle
+                key={index}
+                name={`point-${index}`}
+                x={point[0]}
+                y={point[1]}
+                radius={vertexRadius}
+                fill={polygonColorString}
+                stroke="white"
+                strokeWidth={2}
+                draggable={!isDrawing && isInteractive}
+                onDragMove={(e) => handlePointDragMove(e, index)}
+                onMouseOver={(e) => handleMouseOverPoint(e, index)}
+                onMouseOut={(e) => handleMouseOutPoint(e, index)}
+                onContextMenu={(e) => handleContextMenu(e, index)}
+              />
+            ))}
+          </Layer>
+        </Stage>
+      )}
+    </div>
+  );
+}