[FFmpeg-user] Speed differences, was: The Magic Microsecond

Jan Ehrhardt phpdev at ehrhardt.nl
Sun Jul 8 20:56:08 CEST 2012

Andy Sheen in gmane.comp.video.ffmpeg.user (Sun, 08 Jul 2012 18:59:00
>I am seeing a problem in zeranoes latest build (same as your test in
>fact) where the CPU jumps to 100% and ffmpeg freezes (frame number
>stops, time position freezes) randomly. The freeze lasts 5+seconds, the
>counter stops and then all of a sudden starts incrementing again. This
>can happen 0 to multiple times during the encode and I have seen
>variations of over 25% in encode times for exactly the same encode
>(machine idle apart from the encode process).

Even without the freezes the latest FFmpeg is 15-20% slower than (for
instance) the latest 0.10.2, when compiled with Mingw32 on Windows. It
must be something with the Windows builds.

My curiosity won and I postponed the diner. No luck, going offline now.

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