[vdr] 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 under Debian 13. I switched to Ubuntu 24.02 to use the Seahawk repository, which offers many ready-to-use packages with no succes.

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

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

Regards.

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