Advice for vdr 2.6.9 and mpv plugin

Hi,

I am building a new VDR machine under RX550 for hevc 10 bits.

I can't afford to get a vdr 2.6.9 + softhddevice + mpv playing mkv files=20
under Debian 13. I switched to Ubuntu 24.02 to use the Seahawk=20
repository, which offers many ready-to-use packages with no succes.

In this last attempt, mpv opens with a black screen because it's=20
sticking with "alsa:device=3Ddefault" instead of "audio-device=3Dalsa/hw:1,=
9"

Can anyone advice a working distribution and packages (for vdr / mpv /=20
hevc / vaapi) ?

Regards.

PS : the only frontend which is working perfectly is Kodi by I prefer to=20
stay in "vdr environnement".