Looking forward to this being resolved so I can finally dust out my RPi4 recalbox and enjoy x265 hardware decoding. For now, sticking with my Rpi3B+ on recalbox 7.1.1 as my daily setup.
So why not use LibreElec
https://libreelec.tv/downloads/raspberry/
with your Pi 4 to watch Movies and the (already working) Recalbox 7.1.1 on your Pi 3B+ to play Games ?
- LibreElec uses the last Version of Kodi (19), RecalBox don't !
- Don't update to RecalBox 8 !
Look around on this Board, it seems that this Version give People a lot of Trouble.
For this Reason I'm still using RecalBox 6 on m,y Pi 3B+ and it works great without any Problems.