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

Relax remuxing requirement for LiveTV

Original-merge: 0392daa10397c40d62e2068cd85e030d9ca2d898

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

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

1 files changed, 14 insertions, 0 deletions

diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index 6cd466da0..af4a9e689 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/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;