Doom9's Forum - View Single Post - SVT-VP9 Framerate??

osgZach · 17th July 2019, 09:14

I've been playing with some compiled binaries my friend managed to find for me. But I'm having trouble with setting the proper FPS.

if I specify -fps-num 24000 -fps-denom 1001 it will output a file with 23.98 fps which ffmpeg does not like.

If I just tell it 24, ffmpeg will take it, but then the audio from the original source will be off by 1 second (source clip is 10 minutes, video file comes out to 9m59s)

Is it just not supported at this point, or is this some bug I have to wait for them to fix... Can I rescale the "FPS/duration" of the audio in ffmpeg as a compromise? What is the proper way to go about doing that?

edit:
Maybe a misunderstanding on my part. When I dump the input mkv file to YUV with ffmpeg it seems to want to assign it the 23.98 fps at that point.
I can't seem to get it to play nice in that regard

17th July 2019, 09:14	#1 \| Link
osgZach Registered User Join Date: Feb 2009 Location: USA Posts: 676	SVT-VP9 Framerate?? I've been playing with some compiled binaries my friend managed to find for me. But I'm having trouble with setting the proper FPS. if I specify -fps-num 24000 -fps-denom 1001 it will output a file with 23.98 fps which ffmpeg does not like. If I just tell it 24, ffmpeg will take it, but then the audio from the original source will be off by 1 second (source clip is 10 minutes, video file comes out to 9m59s) Is it just not supported at this point, or is this some bug I have to wait for them to fix... Can I rescale the "FPS/duration" of the audio in ffmpeg as a compromise? What is the proper way to go about doing that? edit: Maybe a misunderstanding on my part. When I dump the input mkv file to YUV with ffmpeg it seems to want to assign it the 23.98 fps at that point. I can't seem to get it to play nice in that regard Last edited by osgZach; 18th July 2019 at 00:37.