[Cin] cingg faster than ffmpeg itself on pulling frames!?

[Andrew Randrianasulu]

On Sat, Apr 26, 2025 at 10:09 PM Andrea paz <gamberucci.andrea at gmail.com> wrote:
>
> 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)


I think I am seeing some artefacts on reverse too, but normal playback
was fixed for me by checking "Play every frame" checkbox

Can you post mediainfo of input file too?

>
>
> Rendering (h265.mp4 and hevc_vaapi_8b420.mp4):
>
> h265.mp4 --> 10 fps
> hevc_vaapi_8b420.mp4 --> 23.7 fps