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bound recording snapshot lookups by segment length

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Ordering the recording snapshot and Frigate+ lookups by stream_type ahead of start_time broke index order, so SQLite fetched and sorted every older recording for the camera on each request (about 100 ms on a 30 day camera, run on the event loop). A start_time lower bound of the frame time minus MAX_SEGMENT_DURATION keeps the lookup to a few rows.
This commit is contained in:
Josh Hawkins
2026-10-15 16:25:59 -05:00
parent 16a377233e
commit d69a41a948
1 changed files with 6 additions and 1 deletions
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frigate/api/media.py
+6 -1
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@@ -42,6 +42,7 @@ from frigate.config.camera.snapshots import SnapshotsConfig
from frigate.const import (
CACHE_DIR,
INSTALL_DIR,
MAX_SEGMENT_DURATION,
PREVIEW_FRAME_TYPE,
STREAM_TYPE_MAIN,
STREAM_TYPE_SUB,
@@ -350,6 +351,7 @@ async def get_snapshot_from_recording(
.where(
(frame_time >= Recordings.start_time)
& (frame_time <= Recordings.end_time)
& (Recordings.start_time >= frame_time - MAX_SEGMENT_DURATION)
)
.where(Recordings.camera == camera_name)
.order_by(Recordings.stream_type.asc(), Recordings.start_time.desc())
@@ -369,6 +371,7 @@ async def get_snapshot_from_recording(
.where(
(frame_time >= Recordings.start_time)
& (frame_time <= Recordings.end_time)
& (Recordings.start_time >= frame_time - MAX_SEGMENT_DURATION)
)
.where(Recordings.camera == camera_name)
.order_by(Recordings.stream_type.asc(), Recordings.start_time.desc())
@@ -433,7 +436,9 @@ async def submit_recording_snapshot_to_plus(
Recordings.start_time,
)
.where(
(frame_time >= Recordings.start_time) & (frame_time <= Recordings.end_time)
(frame_time >= Recordings.start_time)
& (frame_time <= Recordings.end_time)
& (Recordings.start_time >= frame_time - MAX_SEGMENT_DURATION)
)
.where(Recordings.camera == camera_name)
.order_by(Recordings.stream_type.asc(), Recordings.start_time.desc())