Miscellaneous fixes (#24790)

* stagger the daily region grid rebuild across cameras

Every camera requested its region grid at exactly 02:00, so the requests queued up in the dispatcher and held up recording segment inserts behind them. Each camera now picks a random offset of up to an hour.

* only log ffmpeg crashes when restarting

* round preview skeleton corners to match the player

frigate/video/detect.py

@@ -2,10 +2,11 @@
 
 import logging
 import queue
+import random
 import threading
 import time
 from collections import deque
-from datetime import UTC, datetime
+from datetime import UTC, datetime, timedelta
 from multiprocessing import Queue
 from multiprocessing.synchronize import Event as MpEvent
 from typing import Any
@@ -255,7 +256,9 @@ def process_frames(
     region_grid: list[list[dict[str, Any]]],
     exit_on_empty: bool = False,
 ):
-    next_region_update = get_tomorrow_at_time(2)
+    # cameras share one dispatcher, so stagger the daily grid rebuilds
+    region_update_offset = timedelta(seconds=random.randrange(3600))
+    next_region_update = get_tomorrow_at_time(2) + region_update_offset
     config_subscriber = CameraConfigUpdateSubscriber(
         None,
         {camera_config.name: camera_config},
@@ -344,7 +347,7 @@ def process_frames(
             if updated_grid:
                 region_grid = updated_grid
 
-            next_region_update = get_tomorrow_at_time(2)
+            next_region_update = get_tomorrow_at_time(2) + region_update_offset
 
         try:
             if exit_on_empty:

frigate/video/ffmpeg.py

@@ -474,10 +474,10 @@ class CameraWatchdog(threading.Thread):
             if not self.capture_thread.is_alive():
                 self.detect_status.send("offline", now)
                 self.camera_fps.value = 0
-                self.logger.error(
-                    f"Ffmpeg process crashed unexpectedly for {self.config.name}."
-                )
                 if can_restart:
+                    self.logger.error(
+                        f"Ffmpeg process crashed unexpectedly for {self.config.name}."
+                    )
                     self.reset_capture_thread(terminate=False)
                     last_restart_time = now
             elif self.camera_fps.value >= (self.config.detect.fps + 10):
@@ -498,10 +498,10 @@ class CameraWatchdog(threading.Thread):
             elif now - self.capture_thread.current_frame.value > 20:
                 self.detect_status.send("offline", now)
                 self.camera_fps.value = 0
-                self.logger.info(
-                    f"No frames received from {self.config.name} in 20 seconds. Exiting ffmpeg..."
-                )
                 if can_restart:
+                    self.logger.info(
+                        f"No frames received from {self.config.name} in 20 seconds. Exiting ffmpeg..."
+                    )
                     self.reset_capture_thread()
                     last_restart_time = now
             else:

web/src/components/player/PreviewPlayer.tsx

@@ -332,7 +332,9 @@ function PreviewVideoPlayer({
           {t("noPreviewFoundFor", { cameraName: cameraName })}
         </div>
       )}
-      {firstLoad && <Skeleton className="absolute aspect-video size-full" />}
+      {firstLoad && (
+        <Skeleton className="absolute aspect-video size-full rounded-lg md:rounded-2xl" />
+      )}
     </div>
   );
 }
@@ -555,7 +557,9 @@ function PreviewFramesPlayer({
           {t("noPreviewFoundFor", { cameraName: cameraName })}
         </div>
       )}
-      {firstLoad && <Skeleton className="absolute aspect-video size-full" />}
+      {firstLoad && (
+        <Skeleton className="absolute aspect-video size-full rounded-lg md:rounded-2xl" />
+      )}
     </div>
   );
 }