diff --git a/Jellyfin.Api/Helpers/MediaInfoHelper.cs b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
index 212d678a85..5faa7bc59d 100644
--- a/Jellyfin.Api/Helpers/MediaInfoHelper.cs
+++ b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
@@ -385,6 +385,19 @@ public class MediaInfoHelper
/// A containing the .
public async Task 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;