[FFmpeg-user] Shrinking video files

Cecil Westerhof Cecil at decebal.nl
Mon Apr 3 17:41:42 EEST 2017

On Monday  3 Apr 2017 15:32 CEST, Nicolas George wrote:

> Le quartidi 14 germinal, an CCXXV, Cecil Westerhof a écrit :
>> By the way: when I am going to use an other preset like slow, the
>> file will be smaller, but can I count on it that the quality is at
>> least as good as with ultrafast?
> The quality is set by crf; the preset changes the efforts to achieve
> it, and thus the file size.

Maybe I could set crf back to 24 or 23 and use slow or slower. It will
still be small (I think) and the quality would be better. I could do
the conversion in a batch.

>> Well, ffmpeg already took all my cores. That is part of the problem
>> of long runs: when the conversion runs, I can almost do nothing
>> else on my computer.
> This is completely abnormal. But probably not related to FFmpeg.

With top I see that ffmpeg takes more as 500% CPU.

Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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