[bug] Trancoding occurs even when the client supports the video and audio codecs

[jonjomckay]

When trying to stream any channel from my DVB-S tuner, Jellyfin wants to transcode it into H264 and AAC, even though the channel usually already is.

I think this may be down to this chunk of code, that doesn't return any stream information - only that the video stream is a video, and the audio stream is audio:

jellyfin-plugin-tvheadend/TVHeadEnd/LiveTvService.cs

Lines 453 to 475 in 5c29b99

	return new MediaSourceInfo
	{
	Id = channelId,
	Path = _htsConnectionHandler.GetHttpBaseUrl() + ticket.Url,
	Protocol = MediaProtocol.Http,
	MediaStreams = new List<MediaStream>
	{
	new MediaStream
	{
	Type = MediaStreamType.Video,
	// Set the index to -1 because we don't know the exact index of the video stream within the container
	Index = -1,
	// Set to true if unknown to enable deinterlacing
	IsInterlaced = true
	},
	new MediaStream
	{
	Type = MediaStreamType.Audio,
	// Set the index to -1 because we don't know the exact index of the audio stream within the container
	Index = -1
	}
	}
	};

Some of the missing information (stream index, codec, language) is available from Tvheadend, using the /api/service/streams endpoint, so I think fetching that data might help solve this, assuming that missing info is the cause.

[djtomybcn]

Same situation, all livetv streams are transcoded. I have tried forcing different stream profiles in Tvheadend with the same result.

[Sh3rl0ck83]

Same for me. Only workaround I found to prevent transcoding and to enable direct stream / remuxing is using the Jellyfin m3u tuner with the TVH m3u channel list (which also support stream profile selection) e.g /playlist/channels.m3u?profile=pass