[FFmpeg-devel] Does i686 have MMX?

Daniel Verkamp daniel
Thu Aug 26 21:07:29 CEST 2010

2010/8/26 M?ns Rullg?rd <mans at mansr.com>:
> Jason Garrett-Glaser <darkshikari at gmail.com> writes:
>> The issue is simple:
>> 1. ?People use --cpu on x86 to mean "it should run on at least this
>> CPU, and contain optimizations for all better CPUs".
> Are you aware of the contradiction in that statement?

It's not contradictory if all optimized functions requiring features
beyond the base --cpu are selected via runtime CPU detection.  Whether
this is the case for all optimizations in all of FFmpeg is another

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