[FFmpeg-user] Unable to create multiple outputs with svtav1
cpz at tuunq.com
Wed Nov 16 18:18:49 EET 2022
On 11/14/2022 1:16 AM, 天天快乐汤 via ffmpeg-user wrote:
> ffmpeg.exe -i 'in.mp4' -c:v libsvtav1 -preset 4 -crf 20 'p4.mp4' -c:v libsvtav1 -preset 6 -crf 20 'p6.mp4' -c:v libsvtav1 -preset 8 -crf 20 'p8.mp4'
> Result: failed, three 48 Byte file created, CPU drop to 0%, and ffmpeg never exit
Have you looked at https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs ?
"Outputting and re-encoding multiple times in the same FFmpeg process will
typically slow down to the "slowest encoder" in your list"
You may be better off running ffmpeg once for each output file to get
completely parallel operation.
(Entire command output missing from the previous email; include the command
output in the body of the email.)
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