> Thanks a lot
I recovered VAAPI acceleration by downloading ffmpeg 4.4 on the ffmpeg website, and then compiling and installing it in /usr/local. Then I compiled VLC and it worked.
Loss of VAAPI hw acceleration with ffmpeg 5.x has been reported to VLC devs, and it will not be corrected in the 3.x branch.
Cf. https://code.videolan.org/videolan/vlc/-/issues/26772
Have a good day.
FM