canPlaySecondaryAudio return false for webos 4 and DTS transcoding issue

[brokenmass]

Describe The Bug
I have a LG C9 TV, running webos 4 and i'm using the jellyfin-webos app.
Webos 4 support DTS and HTMLMediaElement audioTracks property
If I try to play a video that has a DTS audio track, the file get transcoded (remuxed if i play a non DTS track, audio transcoding DTS to AC3 if I select the DTS track)

Steps To Reproduce

1. Play a movie with more than one audio track of which at least one is DTS
2. Notice the movie get remuxed or transcoded ( PlayMethod=Transcode, TranscodeReason=SecondaryAudioNotSupported )

Expected Behavior
It should play the movie without remuxing or transcoding

System (please complete the following information):

• Platform: Webos
• Browser: Webos app
• Jellyfin Version: 10.8.10

Additional Context
The issue can be fixed by changing browser.web0sVersion >= 5.0 to browser.web0sVersion >= 4.0 in https://github.com/jellyfin/jellyfin-web/blob/master/src/scripts/browserDeviceProfile.js#L358C9-L358C9
with that line changed the movie is correcly played directly.

Ignoring the SecondaryAudioNotSupported issue, I would still have expected that when playing DTS audio (supported in webos4) it would simply remux and not transcode the audio track.

The issue seems to be caused by the request the app makes media:/videos/b08076b6-68eb-2d41-280a-81a9b6d181ca/master.m3u8?MediaSourceId=b08076b668eb2d41280a81a9b6d181ca&VideoCodec=h264,hevc,h264&AudioCodec=aac,mp3,ac3,eac3&AudioStreamIndex=3&VideoBitrate=139360000&AudioBitrate=640000&MaxFramerate=23.976025&api_key
I would expect AudioCodec=aac,mp3,ac3,eac to include DTS)

[dmitrylyzo]

The issue can be fixed by changing browser.web0sVersion >= 5.0 to browser.web0sVersion >= 4.0 in https://github.com/jellyfin/jellyfin-web/blob/master/src/scripts/browserDeviceProfile.js#L358C9-L358C9
with that line changed the movie is correcly played directly.

That was an assumption by referring to Tizen. Tizen 4/5 also has audioTracks, but changing it has no effect.
If your TV works correctly with this change, feel free to open a PR on the release-10.8.z branch.

The issue seems to be caused by the request the app makes media:/videos/b08076b6-68eb-2d41-280a-81a9b6d181ca/master.m3u8?MediaSourceId=b08076b668eb2d41280a81a9b6d181ca&VideoCodec=h264,hevc,h264&AudioCodec=aac,mp3,ac3,eac3&AudioStreamIndex=3&VideoBitrate=139360000&AudioBitrate=640000&MaxFramerate=23.976025&api_key

This is because dts has not been added to hlsInTsVideoAudioCodecs (as here).
UPD:
It isn't listed as supported for TS: https://webostv.developer.lge.com/develop/specifications/video-audio-45

[jellyfin-bot]

This issue has gone 120 days without comment. To avoid abandoned issues, it will be closed in 21 days if there are no new comments.

If you're the original submitter of this issue, please comment confirming if this issue still affects you in the latest release or master branch, or close the issue if it has been fixed. If you're another user also affected by this bug, please comment confirming so. Either action will remove the stale label.

This bot exists to prevent issues from becoming stale and forgotten. Jellyfin is always moving forward, and bugs are often fixed as side effects of other changes. We therefore ask that bug report authors remain vigilant about their issues to ensure they are closed if fixed, or re-confirmed - perhaps with fresh logs or reproduction examples - regularly. If you have any questions you can reach us on Matrix or Social Media.