Recording scrubbing fixes (#10439)

* use a single source of truth for scrubbing

* simplify controller state

* Cleanup scrubbing logic

* Apply same logic to mobile

---------

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

web/src/components/player/dynamic/DynamicVideoController.ts

@@ -9,7 +9,6 @@ export class DynamicVideoController {
   public camera = "";
   private playerController: HTMLVideoElement;
   private previewController: PreviewController;
-  private setScrubbing: (isScrubbing: boolean) => void;
   private setFocusedItem: (timeline: Timeline) => void;
   private playerMode: PlayerMode = "playback";
 
@@ -24,7 +23,6 @@ export class DynamicVideoController {
     previewController: PreviewController,
     annotationOffset: number,
     defaultMode: PlayerMode,
-    setScrubbing: (isScrubbing: boolean) => void,
     setFocusedItem: (timeline: Timeline) => void,
   ) {
     this.camera = camera;
@@ -32,7 +30,6 @@ export class DynamicVideoController {
     this.previewController = previewController;
     this.annotationOffset = annotationOffset;
     this.playerMode = defaultMode;
-    this.setScrubbing = setScrubbing;
     this.setFocusedItem = setFocusedItem;
   }
 
@@ -50,11 +47,6 @@ export class DynamicVideoController {
   }
 
   seekToTimestamp(time: number, play: boolean = false) {
-    if (this.playerMode != "playback") {
-      this.playerMode = "playback";
-      this.setScrubbing(false);
-    }
-
     if (
       this.recordings.length == 0 ||
       time < this.recordings[0].start_time ||
@@ -64,6 +56,10 @@ export class DynamicVideoController {
       return;
     }
 
+    if (this.playerMode != "playback") {
+      this.playerMode = "playback";
+    }
+
     let seekSeconds = 0;
     (this.recordings || []).every((segment) => {
       // if the next segment is past the desired time, stop calculating
@@ -126,7 +122,6 @@ export class DynamicVideoController {
     if (scrubResult && this.playerMode != "scrubbing") {
       this.playerMode = "scrubbing";
       this.playerController.pause();
-      this.setScrubbing(true);
     }
   }
 

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

@@ -21,6 +21,7 @@ type DynamicVideoPlayerProps = {
   onControllerReady: (controller: DynamicVideoController) => void;
   onTimestampUpdate?: (timestamp: number) => void;
   onClipEnded?: () => void;
+  isScrubbing: boolean;
 };
 export default function DynamicVideoPlayer({
   className,
@@ -31,6 +32,7 @@ export default function DynamicVideoPlayer({
   onControllerReady,
   onTimestampUpdate,
   onClipEnded,
+  isScrubbing,
 }: DynamicVideoPlayerProps) {
   const apiHost = useApiHost();
   const { data: config } = useSWR<FrigateConfig>("config");
@@ -53,7 +55,6 @@ export default function DynamicVideoPlayer({
   const playerRef = useRef<HTMLVideoElement | null>(null);
   const [previewController, setPreviewController] =
     useState<PreviewController | null>(null);
-  const [isScrubbing, setIsScrubbing] = useState(false);
   const [focusedItem, setFocusedItem] = useState<Timeline | undefined>(
     undefined,
   );
@@ -67,8 +68,7 @@ export default function DynamicVideoPlayer({
       playerRef.current,
       previewController,
       (config.cameras[camera]?.detect?.annotation_offset || 0) / 1000,
-      "playback",
-      setIsScrubbing,
+      isScrubbing ? "scrubbing" : "playback",
       setFocusedItem,
     );
     // we only want to fire once when players are ready
@@ -133,6 +133,10 @@ export default function DynamicVideoPlayer({
       return;
     }
 
+    if (playerRef.current) {
+      playerRef.current.autoplay = !isScrubbing;
+    }
+
     setSource(
       `${apiHost}vod/${camera}/start/${timeRange.start}/end/${timeRange.end}/master.m3u8`,
     );

web/src/views/events/RecordingView.tsx

@@ -89,13 +89,16 @@ export function DesktopRecordingView({
   const [playerTime, setPlayerTime] = useState(startTime);
 
   const updateSelectedSegment = useCallback(
-    (currentTime: number) => {
+    (currentTime: number, updateStartTime: boolean) => {
       const index = timeRange.ranges.findIndex(
         (seg) => seg.start <= currentTime && seg.end >= currentTime,
       );
 
       if (index != -1) {
+        if (updateStartTime) {
           setPlaybackStart(currentTime);
+        }
+
         setSelectedRangeIdx(index);
       }
     },
@@ -108,7 +111,7 @@ export function DesktopRecordingView({
         currentTime > currentTimeRange.end + 60 ||
         currentTime < currentTimeRange.start - 60
       ) {
-        updateSelectedSegment(currentTime);
+        updateSelectedSegment(currentTime, false);
         return;
       }
 
@@ -126,40 +129,22 @@ export function DesktopRecordingView({
     updateSelectedSegment,
   ]);
 
-  useEffect(() => {
-    if (!scrubbing) {
-      if (
-        currentTimeRange.start <= currentTime &&
-        currentTimeRange.end >= currentTime
-      ) {
-        mainControllerRef.current?.seekToTimestamp(currentTime, true);
-      } else {
-        updateSelectedSegment(currentTime);
-      }
-    }
-
-    // we only want to seek when user stops scrubbing
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [scrubbing]);
-
   useEffect(() => {
     if (!scrubbing) {
       if (Math.abs(currentTime - playerTime) > 10) {
-        mainControllerRef.current?.pause();
-
         if (
           currentTimeRange.start <= currentTime &&
           currentTimeRange.end >= currentTime
         ) {
           mainControllerRef.current?.seekToTimestamp(currentTime, true);
         } else {
-          updateSelectedSegment(currentTime);
+          updateSelectedSegment(currentTime, true);
         }
       }
     }
     // we only want to seek when current time doesn't match the player update time
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [currentTime]);
+  }, [currentTime, scrubbing]);
 
   const onSelectCamera = useCallback(
     (newCam: string) => {
@@ -234,6 +219,7 @@ export function DesktopRecordingView({
                 onControllerReady={(controller) => {
                   mainControllerRef.current = controller;
                 }}
+                isScrubbing={scrubbing}
               />
             </div>
             <div className="w-full flex justify-center gap-2 overflow-x-auto">
@@ -357,8 +343,24 @@ export function MobileRecordingView({
   // scrubbing and timeline state
 
   const [scrubbing, setScrubbing] = useState(false);
-  const [currentTime, setCurrentTime] = useState<number>(
-    startTime || Date.now() / 1000,
+  const [currentTime, setCurrentTime] = useState<number>(startTime);
+  const [playerTime, setPlayerTime] = useState(startTime);
+
+  const updateSelectedSegment = useCallback(
+    (currentTime: number, updateStartTime: boolean) => {
+      const index = timeRange.ranges.findIndex(
+        (seg) => seg.start <= currentTime && seg.end >= currentTime,
+      );
+
+      if (index != -1) {
+        if (updateStartTime) {
+          setPlaybackStart(currentTime);
+        }
+
+        setSelectedRangeIdx(index);
+      }
+    },
+    [timeRange],
   );
 
   useEffect(() => {
@@ -367,28 +369,36 @@ export function MobileRecordingView({
         currentTime > currentTimeRange.end + 60 ||
         currentTime < currentTimeRange.start - 60
       ) {
-        const index = timeRange.ranges.findIndex(
-          (seg) => seg.start <= currentTime && seg.end >= currentTime,
-        );
-
-        if (index != -1) {
-          setSelectedRangeIdx(index);
-        }
+        updateSelectedSegment(currentTime, false);
         return;
       }
 
       controllerRef.current?.scrubToTimestamp(currentTime);
     }
-  }, [currentTime, scrubbing, currentTimeRange, timeRange]);
+  }, [
+    currentTime,
+    scrubbing,
+    timeRange,
+    currentTimeRange,
+    updateSelectedSegment,
+  ]);
 
   useEffect(() => {
     if (!scrubbing) {
+      if (Math.abs(currentTime - playerTime) > 10) {
+        if (
+          currentTimeRange.start <= currentTime &&
+          currentTimeRange.end >= currentTime
+        ) {
           controllerRef.current?.seekToTimestamp(currentTime, true);
+        } else {
+          updateSelectedSegment(currentTime, true);
         }
-
-    // we only want to seek when user stops scrubbing
+      }
+    }
+    // we only want to seek when current time doesn't match the player update time
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [scrubbing]);
+  }, [currentTime, scrubbing]);
 
   // motion timeline data
 
@@ -450,8 +460,12 @@ export function MobileRecordingView({
           onControllerReady={(controller) => {
             controllerRef.current = controller;
           }}
-          onTimestampUpdate={setCurrentTime}
+          onTimestampUpdate={(timestamp) => {
+            setPlayerTime(timestamp);
+            setCurrentTime(timestamp);
+          }}
           onClipEnded={onClipEnded}
+          isScrubbing={scrubbing}
         />
       </div>