2017-04-10 14:43 GMT+02:00 fred fred <[email protected]>:
> anyway, even with -threads 0 > x265 [info]: Thread pool created using 24 threadsx265 [info]: Slices > : 1x265 [info]: frame threads / pool features : 5 / > wpp(5 rows) > I see with top command between 400% - 500% CPU on ffmpeg ... > I was expected like 2400% or 24 ffmpeg workers with 100% It is possible to change the x265 code so that you get something like 2400% - the disadvantage is that encoding takes longer in that case compared to the 500% you see now;-( You have to understand that for "real" (not intra-only) codecs performance cannot be increased by simply adding more cpu cores. > what it the best efficient way to use my 24 cores ? That is easy to answer: If there are no other bottlenecks (harddisk and memory come to mind), starting 24 transcoding processes with -threads 1 each is most efficient. Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
