[Libav-user] Multithread decode and scaler
george at nsup.org
Mon Aug 22 13:09:58 EEST 2022
wolverin via Libav-user (12022-08-22):
> Scaling has accelerated by about 3 times, but it's still slow (about
> 50 ms, it was 130)
The only advice I can give you at this point is to examine how ffmpeg
itself does and see how your program differs.
> >Also try to use the command-line tool to see if multithreading is indeed
> Please explain what it is about?
ffmpeg -i some_file_with_mjpeg -f null -
and at the same time:
and see how much CPU it uses. If it is >>100%, then multithreading is
used. If not, then it probably is not possible easily.
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 833 bytes
Desc: not available
More information about the Libav-user