[FFmpeg-user] Zeranoe Windows builds spiking CPU to 100% randomly

Andy Sheen sheen.andy at googlemail.com
Mon Jul 9 20:25:33 CEST 2012

Roger Pack wrote on Mon 09 Jul at 19:14 UK time
>> (in fact the latest...). I am seeing cpu spiking to 100% randomly on the
>> first pass of an x264 encode. When this happens the counters freeze and
>> ...
>> libs (see below). The ONLY thing that is different is a newer version of
>> the ffmpeg tree (git-7f83db3 vs git-f514695)
> Might be interesting to do a git-bisect on it and see which commit is
> the culprit.  Looks like there were a number of changes...
> https://github.com/FFmpeg/FFmpeg/compare/f514695...7f83db3

Yes. It looks like someone had a good time over Christmas tidying up the
code. Most of the commits are to add/insert spaces or format lines
differently. I'll take a look and see what I come up with...

> You "can" also tell where a thread is currently at (i.e. "its call
> stack when hanging") by using process explorer.  I think you can,
> anyway.
> GL!

OK - thanks. I'll take a look (haven't coded bar shell scripts for a

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