add ability to continue playing stream in background

web/src/components/player/LivePlayer.tsx

@@ -32,6 +32,7 @@ type LivePlayerProps = {
   useWebGL: boolean;
   windowVisible?: boolean;
   playAudio?: boolean;
+  playInBackground: boolean;
   micEnabled?: boolean; // only webrtc supports mic
   iOSCompatFullScreen?: boolean;
   pip?: boolean;
@@ -53,6 +54,7 @@ export default function LivePlayer({
   useWebGL = false,
   windowVisible = true,
   playAudio = false,
+  playInBackground = false,
   micEnabled = false,
   iOSCompatFullScreen = false,
   pip,
@@ -202,6 +204,7 @@ export default function LivePlayer({
           camera={streamName}
           playbackEnabled={cameraActive || liveReady}
           audioEnabled={playAudio}
+          playInBackground={playInBackground}
           onPlaying={playerIsPlaying}
           pip={pip}
           setFullResolution={setFullResolution}

web/src/components/player/MsePlayer.tsx

@@ -15,6 +15,7 @@ type MSEPlayerProps = {
   className?: string;
   playbackEnabled?: boolean;
   audioEnabled?: boolean;
+  playInBackground?: boolean;
   pip?: boolean;
   onPlaying?: () => void;
   setFullResolution?: React.Dispatch<SetStateAction<VideoResolutionType>>;
@@ -26,6 +27,7 @@ function MSEPlayer({
   className,
   playbackEnabled = true,
   audioEnabled = false,
+  playInBackground = false,
   pip = false,
   onPlaying,
   setFullResolution,
@@ -508,12 +510,22 @@ function MSEPlayer({
       }
     };
 
+    if (!playInBackground) {
       document.addEventListener("visibilitychange", listener);
+    }
 
     return () => {
+      if (!playInBackground) {
         document.removeEventListener("visibilitychange", listener);
+      }
     };
-  }, [playbackEnabled, visibilityCheck, onConnect, onDisconnect]);
+  }, [
+    playbackEnabled,
+    visibilityCheck,
+    playInBackground,
+    onConnect,
+    onDisconnect,
+  ]);
 
   // control pip
 

web/src/views/live/LiveCameraView.tsx

@@ -55,6 +55,7 @@ import {
   FaMicrophone,
   FaMicrophoneSlash,
 } from "react-icons/fa";
+import { CiStreamOff, CiStreamOn } from "react-icons/ci";
 import { GiSpeaker, GiSpeakerOff } from "react-icons/gi";
 import { TbViewfinder, TbViewfinderOff } from "react-icons/tb";
 import { IoIosWarning, IoMdArrowRoundBack } from "react-icons/io";
@@ -220,6 +221,11 @@ export default function LiveCameraView({
   const [pip, setPip] = useState(false);
   const [lowBandwidth, setLowBandwidth] = useState(false);
 
+  const [playInBackground, setPlayInBackground] = usePersistence<boolean>(
+    `${camera.name}-background-play`,
+    false,
+  );
+
   const [fullResolution, setFullResolution] = useState<VideoResolutionType>({
     width: 0,
     height: 0,
@@ -481,6 +487,8 @@ export default function LiveCameraView({
                 streamName={streamName ?? ""}
                 setStreamName={setStreamName}
                 preferredLiveMode={preferredLiveMode}
+                playInBackground={playInBackground ?? false}
+                setPlayInBackground={setPlayInBackground}
               />
             </div>
           </TooltipProvider>
@@ -513,6 +521,7 @@ export default function LiveCameraView({
                 showStillWithoutActivity={false}
                 cameraConfig={camera}
                 playAudio={audio}
+                playInBackground={playInBackground ?? false}
                 micEnabled={mic}
                 iOSCompatFullScreen={isIOS}
                 preferredLiveMode={preferredLiveMode}
@@ -779,6 +788,8 @@ type FrigateCameraFeaturesProps = {
   streamName: string;
   setStreamName?: (value: string | undefined) => void;
   preferredLiveMode: string;
+  playInBackground: boolean;
+  setPlayInBackground: (value: boolean | undefined) => void;
 };
 function FrigateCameraFeatures({
   camera,
@@ -789,6 +800,8 @@ function FrigateCameraFeatures({
   streamName,
   setStreamName,
   preferredLiveMode,
+  playInBackground,
+  setPlayInBackground,
 }: FrigateCameraFeaturesProps) {
   const { payload: detectState, send: sendDetect } = useDetectState(
     camera.name,
@@ -853,6 +866,14 @@ function FrigateCameraFeatures({
             }
           />
         )}
+        <CameraFeatureToggle
+          className="p-2 md:p-0"
+          variant={fullscreen ? "overlay" : "primary"}
+          Icon={playInBackground ? CiStreamOn : CiStreamOff}
+          isActive={playInBackground ?? false}
+          title={`${playInBackground ? "Disable" : "Enable"} Background Playback`}
+          onClick={() => setPlayInBackground(!playInBackground)}
+        />
         {Object.values(camera.live.streams).length > 1 && (
           <Select
             value={streamName}
@@ -952,6 +973,13 @@ function FrigateCameraFeatures({
             }
           />
         )}
+        <FilterSwitch
+          label="Play in Background"
+          isChecked={playInBackground}
+          onCheckedChange={(checked) => {
+            setPlayInBackground(checked);
+          }}
+        />
         {Object.values(camera.live.streams).length > 1 && (
           <div className="mt-1 p-2">
             <div className="mb-1 text-sm">Live stream selection</div>