26 Apr
2025
26 Apr
'25
7:09 p.m.
I did two tests with ffmpeg standalone: 1) time -p ffmpeg -hwaccel vaapi -i hdr_02.mp4 -c:a copy -c:v rawvideo -f nut /dev/null fps=26 speed=0.438x CPU load=5% 2) (no vaapi) time -p ffmpeg -i hdr_02.mp4 -c:a copy -c:v rawvideo -f nut /dev/null fps=100 speed=1.66x I loaded the video to CinGG. Playback: Vaapi X11 --> ~59.7 fps (some freeze at 49 fps) X11 reverse playback --> 9-18 fps (many artefacts) OpenGL --> ~12 fps (many freezes and artefacts) OpenGL reverse --> 7-9 fps (inusable for freeze and artifacts) No vaapi X11 --> 59.7 fps (no artefacts) X11 reverse --> 3-9 fps (many freezes and artefacts) Rendering (h265.mp4 and hevc_vaapi_8b420.mp4): h265.mp4 --> 10 fps hevc_vaapi_8b420.mp4 --> 23.7 fps