Backport pull request #11851 from jellyfin/release-10.9.z

Relax remuxing requirement for LiveTV

Original-merge: 0392daa103

Merged-by: crobibero <cody@robibe.ro>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

Jellyfin.Api/Helpers/MediaInfoHelper.cs

@@ -385,19 +385,6 @@ public class MediaInfoHelper
     /// <returns>A <see cref="Task"/> containing the <see cref="LiveStreamResponse"/>.</returns>
     public async Task<LiveStreamResponse> OpenMediaSource(HttpContext httpContext, LiveStreamRequest request)
     {
-        // Enforce more restrictive transcoding profile for LiveTV due to compatability reasons
-        // Cap the MaxStreamingBitrate to 20Mbps, because we are unable to reliably probe source bitrate,
-        // which will cause the client to request extremely high bitrate that may fail the player/encoder
-        request.MaxStreamingBitrate = request.MaxStreamingBitrate > 20000000 ? 20000000 : request.MaxStreamingBitrate;
-
-        if (request.DeviceProfile is not null)
-        {
-            // Remove all fmp4 transcoding profiles, because it causes playback error and/or A/V sync issues
-            // Notably: Some channels won't play on FireFox and LG webOs
-            // Some channels from HDHomerun will experience A/V sync issues
-            request.DeviceProfile.TranscodingProfiles = request.DeviceProfile.TranscodingProfiles.Where(p => !string.Equals(p.Container, "mp4", StringComparison.OrdinalIgnoreCase)).ToArray();
-        }
-
         var result = await _mediaSourceManager.OpenLiveStream(request, CancellationToken.None).ConfigureAwait(false);
 
         var profile = request.DeviceProfile;

Jellyfin.Api/Helpers/StreamingHelpers.cs

@@ -142,6 +142,20 @@ public static class StreamingHelpers
         }
         else
         {
+            // Enforce more restrictive transcoding profile for LiveTV due to compatability reasons
+            // Cap the MaxStreamingBitrate to 30Mbps, because we are unable to reliably probe source bitrate,
+            // which will cause the client to request extremely high bitrate that may fail the player/encoder
+            streamingRequest.VideoBitRate = streamingRequest.VideoBitRate > 30000000 ? 30000000 : streamingRequest.VideoBitRate;
+
+            if (streamingRequest.SegmentContainer is not null)
+            {
+                // Remove all fmp4 transcoding profiles, because it causes playback error and/or A/V sync issues
+                // Notably: Some channels won't play on FireFox and LG webOS
+                // Some channels from HDHomerun will experience A/V sync issues
+                streamingRequest.SegmentContainer = "ts";
+                streamingRequest.VideoCodec = "h264";
+            }
+
             var liveStreamInfo = await mediaSourceManager.GetLiveStreamWithDirectStreamProvider(streamingRequest.LiveStreamId, cancellationToken).ConfigureAwait(false);
             mediaSource = liveStreamInfo.Item1;
             state.DirectStreamProvider = liveStreamInfo.Item2;

MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs

@@ -2320,7 +2320,11 @@ namespace MediaBrowser.Controller.MediaEncoding
             if (request.VideoBitRate.HasValue
                 && (!videoStream.BitRate.HasValue || videoStream.BitRate.Value > request.VideoBitRate.Value))
             {
-                return false;
+                // For LiveTV that has no bitrate, let's try copy if other conditions are met
+                if (string.IsNullOrWhiteSpace(request.LiveStreamId) || videoStream.BitRate.HasValue)
+                {
+                    return false;
+                }
             }
 
             var maxBitDepth = state.GetRequestedVideoBitDepth(videoStream.Codec);