SOLVED: AV1 Directplay to Amlogic S905X4 not working?

[Fate]

Hi,

I have a jellyfin server that generally words great.

However i have some issues with the Jellyfin AndroidTV app.

I am trying to play a MKV file that contains 1080p 24fps AV1 Video, Opus Audio and ASS Subtitles.
When trying to play this file with the jellyfin AndroidTV via VLC backend I get 90% dropped frames but audio works. The file gets played via directplay.
When trying to play this file with the jellyfin AndroidTV via native (exoplayer?) I get transcoded to H264 because ASS subtitles are not supported by exoplayer. However it plays fine otherwise.

I usually prefer using the VLC backend because it allows directplay and my Jellyfin server is not that fast hardware wise so it can only handle 1-2 transcoding streams but of cause much more directplay clients.


The client is a Magenta TV Android Box based on Android TV12. It has the Jellyfin AndroidTV app Version 0.16.1 installed via play Store.
Specs: https://shop.telekom.de/geraete/telekom-...ne-schwarz
It uses an Amlogic S905X4, A55 Quad and is advertised with AV1 support.

My server hardware is an Intel J5005.

Any idea why I get so many dropped frames with VLC backend?
Or can I get ASS decoding via native backend working somehow so I can directplay?

Thanks for any pointers here!