[FFmpeg-user] Performance issue/question (maybe my misunderstanding)

Andrey Utkin andrey.krieger.utkin at gmail.com
Mon Aug 20 16:58:56 CEST 2012

Try to monitor actual CPU load during transcoding on both PCs. I
suspect libx264 may be not using all 6 cores for all 100% because some
threads have to wait for others to interoperate. Changing x264
threading options may (or may not...) change this result.

I see that you've built ffmpeg manually, and in seemingly same way.
I'd check also libx264 build options - is it built with fine
optimization settings?

Andrey Utkin

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