Voidbert

Greetings! I have been trying out hardware video decoding recently, running Debian bullseye, kernel 5.15.53-rk322x and the lima open-source drivers on my RK3229. Here are my conclusions (working only on a virtual terminal): Using Debian's default ffmpeg and mpv installation, I am only able to get up to 720p with few frame skips. That is using software decoding (--hwdec=no) and SDL for rendering (--vo=sdl). Trying to use DRM (for either software decoding and / or rendering) will result in worse performance. Atomic modesetting needs to be turned off (--drm-atomic=no) in order for anything to appear on my screen (or else, I just get a gray screen). I found this issue of yours (https://github.com/mpv-player/mpv/issues/8522) but it applies to the LibreELEC build. In my case (repo build), --drm-atomic=no needs to be turned on in order for the video playback to work, but it is of no use, since you get better performance out of SDL. --hwdec=rkmpp was also tried but performance differences weren't observed. When you say you built ffmpeg using LibreELEC's patches, are you referring to this? https://github.com/LibreELEC/LibreELEC.tv/tree/0e57a30916a3a88e0d4c595a5525d3c03156fcc6/packages/multimedia/ffmpeg/patches Using your version of mpv, everything works as supposed! Some notes: YUV420 video works very well but RGB video doesn't (both hardware and software decoding). I know it isn't common, I tried it because it could possibly be faster if the CPU didn't have to convert colors between formats, but it ended up being slower. I have tried to provide my help to the Armbian project previously, but what is needed isn't what I know how to provide. Though, I have an idea to help this community: maintaining ffmpeg packages that can take advantage of this hardware acceleration on these chips. This can be done externally of the Armbian project. What do you think of this idea?