Fix sending extracted videos (Twitch streams) to other devices

The remote control loadVideo command only carried the raw video ID and
an instance URL, so extracted videos (Twitch live streams and other
yt-dlp sites) failed on the receiver: it tried to fetch the ID from the
/api/v1/videos endpoint, which rejects non-YouTube IDs.

The command now carries the full ContentSource and title. The receiver
rebuilds the VideoID from the source and opens a placeholder Video -
the player then re-extracts streams and full metadata from the original
URL, same as when opening the video locally. Media-source extractors
(WebDAV/SMB/local) keep using the existing UUID:path branch.

Both fields are optional for protocol compatibility: old receivers
ignore them, commands from old senders keep the legacy behavior.

Also stop sending a start time for live streams - there is no shared
timeline, the receiver joins at the live edge.

Yattee/Services/RemoteControl/RemoteControlCoordinator.swift

@@ -389,7 +389,7 @@ final class RemoteControlCoordinator {
     ///   - startTime: Optional start time to seek to after loading.
     ///   - pauseLocalPlayback: If true, pause local playback when remote device starts playing (for "Move to" feature).
     ///   - device: The device to load the video on.
-    func loadVideo(videoID: String, videoTitle: String? = nil, instanceURL: String?, startTime: TimeInterval? = nil, pauseLocalPlayback: Bool = false, on device: DiscoveredDevice) async {
+    func loadVideo(videoID: String, videoTitle: String? = nil, videoSource: ContentSource? = nil, instanceURL: String?, startTime: TimeInterval? = nil, pauseLocalPlayback: Bool = false, on device: DiscoveredDevice) async {
         rcLog("REMOTEPLAY", "[\(device.name)] Starting remote play", details: "videoID=\(videoID), instance=\(instanceURL ?? "default"), startTime=\(startTime ?? 0), pauseLocal=\(pauseLocalPlayback)")
 
         // Clear any stale pending state from previous timed-out operations
@@ -432,7 +432,7 @@ final class RemoteControlCoordinator {
 
         // For move operations, use handshake protocol: remote prepares but waits for play command
         let awaitPlayCommand = pauseLocalPlayback
-        await sendCommand(.loadVideo(videoID: videoID, instanceURL: instanceURL, startTime: startTime, awaitPlayCommand: awaitPlayCommand), to: device)
+        await sendCommand(.loadVideo(videoID: videoID, instanceURL: instanceURL, startTime: startTime, awaitPlayCommand: awaitPlayCommand, videoSource: videoSource, videoTitle: videoTitle), to: device)
         rcLog("REMOTEPLAY", "[\(device.name)] loadVideo command sent, waiting for state update...")
     }
 
@@ -620,8 +620,8 @@ final class RemoteControlCoordinator {
                 playerService?.state.rate = playbackRate
             }
 
-        case .loadVideo(let videoID, let instanceURLString, let startTime, let awaitPlayCommand):
-            rcLog("HANDLE", "[\(senderName)] Executing: loadVideo", details: "videoID=\(videoID), instance=\(instanceURLString ?? "default"), startTime=\(startTime ?? 0), awaitPlay=\(awaitPlayCommand ?? false)")
+        case .loadVideo(let videoID, let instanceURLString, let startTime, let awaitPlayCommand, let videoSource, let videoTitle):
+            rcLog("HANDLE", "[\(senderName)] Executing: loadVideo", details: "videoID=\(videoID), instance=\(instanceURLString ?? "default"), startTime=\(startTime ?? 0), awaitPlay=\(awaitPlayCommand ?? false), source=\(videoSource.map(String.init(describing:)) ?? "none")")
             // Show toast indicating remote video opening
             if let deviceName = controllingDevice?.name {
                 toastManager?.show(
@@ -633,7 +633,7 @@ final class RemoteControlCoordinator {
                     autoDismissDelay: 5.0
                 )
             }
-            await handleLoadVideo(videoID: videoID, instanceURLString: instanceURLString, startTime: startTime, awaitPlayCommand: awaitPlayCommand ?? false, senderDeviceID: message.senderDeviceID)
+            await handleLoadVideo(videoID: videoID, instanceURLString: instanceURLString, startTime: startTime, awaitPlayCommand: awaitPlayCommand ?? false, videoSource: videoSource, videoTitle: videoTitle, senderDeviceID: message.senderDeviceID)
 
         case .closeVideo:
             rcLog("HANDLE", "[\(senderName)] Executing: closeVideo")
@@ -766,8 +766,11 @@ final class RemoteControlCoordinator {
         }
     }
 
-    private func handleLoadVideo(videoID: String, instanceURLString: String?, startTime: TimeInterval? = nil, awaitPlayCommand: Bool = false, senderDeviceID: String? = nil) async {
+    private func handleLoadVideo(videoID: String, instanceURLString: String?, startTime: TimeInterval? = nil, awaitPlayCommand: Bool = false, videoSource: ContentSource? = nil, videoTitle: String? = nil, senderDeviceID: String? = nil) async {
         rcLog("LOADVIDEO", "Loading video: \(videoID)", details: "startTime=\(startTime ?? 0), awaitPlay=\(awaitPlayCommand)")
+        // Short standalone line so it can't be lost to log truncation - confirms this build
+        // understands videoSource and shows what was decoded from the wire
+        rcLog("LOADVIDEO", "Protocol v2: videoSource=\(videoSource?.id ?? "nil"), title=\(videoTitle ?? "nil")")
 
         // Check if we're already playing the same video - just seek instead of reloading
         if let currentVideoID = playerService?.state.currentVideo?.id.videoID,
@@ -808,6 +811,29 @@ final class RemoteControlCoordinator {
             return
         }
 
+        // Extracted videos (Twitch streams, other yt-dlp sites) can't be fetched from the
+        // /videos API - reconstruct the VideoID from the sender's ContentSource and let the
+        // player re-extract from the original URL. Media-source extractors (WebDAV/SMB/local)
+        // are excluded: they're handled by the UUID:path branch above and need a locally
+        // configured source, not extraction.
+        if let videoSource,
+           case .extracted(let extractor, let originalURL) = videoSource,
+           extractor != MediaFile.webdavProvider,
+           extractor != MediaFile.smbProvider,
+           extractor != MediaFile.localFolderProvider {
+            rcLog("LOADVIDEO", "Detected extracted video (\(extractor)), loading via original URL: \(originalURL.absoluteString)")
+            await handleLoadExtractedVideo(
+                videoID: videoID,
+                source: videoSource,
+                originalURL: originalURL,
+                title: videoTitle,
+                startTime: startTime,
+                awaitPlayCommand: awaitPlayCommand,
+                senderDeviceID: senderDeviceID
+            )
+            return
+        }
+
         // Existing API video loading...
         guard let contentService, let instancesManager else {
             rcLog("LOADVIDEO", "Missing contentService or instancesManager", isError: true)
@@ -941,6 +967,53 @@ final class RemoteControlCoordinator {
         }
     }
 
+    /// Loads an extracted video (Twitch stream, other yt-dlp sites) received from a remote device.
+    /// Builds a placeholder Video carrying the original ContentSource - the player re-extracts
+    /// streams and full metadata from the original URL when opening it.
+    private func handleLoadExtractedVideo(videoID: String, source: ContentSource, originalURL: URL, title: String?, startTime: TimeInterval? = nil, awaitPlayCommand: Bool = false, senderDeviceID: String? = nil) async {
+        let video = Video(
+            id: VideoID(source: source, videoID: videoID),
+            title: title ?? originalURL.absoluteString,
+            description: nil,
+            author: Author(id: "", name: originalURL.host ?? "", hasRealChannelInfo: false),
+            duration: 0,
+            publishedAt: nil,
+            publishedText: nil,
+            viewCount: nil,
+            likeCount: nil,
+            thumbnails: [],
+            isLive: false,
+            isUpcoming: false,
+            scheduledStartTime: nil
+        )
+
+        if awaitPlayCommand {
+            // Handshake protocol: load video, then pause and notify sender we're ready
+            rcLog("LOADVIDEO", "Handshake mode: loading extracted video, will pause when ready")
+            playerService?.openVideo(video, startTime: startTime)
+
+            // Wait for video to start playing, then pause
+            try? await Task.sleep(for: .milliseconds(1000))
+
+            // Pause playback - video is loaded and at correct position but not playing
+            playerService?.pause()
+            rcLog("LOADVIDEO", "Extracted video loaded and paused, ready for handoff")
+
+            // Send state update to let sender know we're ready (isPlaying will be false)
+            let state = currentRemoteState()
+            rcLog("LOADVIDEO", "Sending ready state to sender", details: "videoID=\(state.videoID ?? "nil"), playing=\(state.isPlaying)")
+            if let senderID = senderDeviceID {
+                try? await networkService.send(command: .stateUpdate(state), to: senderID)
+            } else {
+                await networkService.broadcast(command: .stateUpdate(state))
+            }
+        } else {
+            // Normal mode: start playing immediately
+            playerService?.openVideo(video, startTime: startTime)
+            rcLog("LOADVIDEO", "Extracted video opened: \(video.title)", details: "startTime=\(startTime ?? 0)")
+        }
+    }
+
     private func expandPlayerIfNeeded() {
         #if os(iOS) || os(macOS)
         let isPiPActive = (playerService?.currentBackend as? MPVBackend)?.isPiPActive ?? false

Yattee/Services/RemoteControl/RemoteControlProtocol.swift

@@ -52,7 +52,10 @@ enum RemoteControlCommand: Codable, Sendable {
     case setVolume(Float)
     case setMuted(Bool)
     case setRate(Float)
-    case loadVideo(videoID: String, instanceURL: String?, startTime: TimeInterval?, awaitPlayCommand: Bool?)
+    /// `videoSource` carries the full ContentSource so non-API videos (e.g. extracted
+    /// Twitch streams) can be reconstructed on the receiver. Optional for
+    /// backward compatibility with older app versions.
+    case loadVideo(videoID: String, instanceURL: String?, startTime: TimeInterval?, awaitPlayCommand: Bool?, videoSource: ContentSource?, videoTitle: String?)
     case closeVideo
     case toggleFullscreen
     case playNext

Yattee/Views/Components/VideoContextMenu.swift

@@ -527,8 +527,9 @@ struct VideoContextMenuContent: View {
             await remoteControl.loadVideo(
                 videoID: video.id.videoID,
                 videoTitle: video.title,
+                videoSource: video.id.source,
                 instanceURL: instanceURL,
-                startTime: startTime,
+                startTime: video.isLive ? nil : startTime,
                 pauseLocalPlayback: false,
                 on: device
             )
@@ -556,11 +557,13 @@ struct VideoContextMenuContent: View {
 
             // Send load video command with current playback time
             // pauseLocalPlayback: true will pause local playback when remote device confirms it started playing
+            // Live streams have no shared timeline - the remote device joins the stream at the live edge
             await remoteControl.loadVideo(
                 videoID: video.id.videoID,
                 videoTitle: video.title,
+                videoSource: video.id.source,
                 instanceURL: instanceURL,
-                startTime: currentTime,
+                startTime: video.isLive ? nil : currentTime,
                 pauseLocalPlayback: true,
                 on: device
             )