On Tue, Mar 10, 2015 at 5:27 PM, Frank Peters <frank.pet...@comcast.net> wrote: > On Tue, 10 Mar 2015 17:17:11 -0700 > Mark Knecht <markkne...@gmail.com> wrote: > >> >> I've had no problems, as best I can >> tell, with ffmpeg and these settings. >> > > Well, if the use of the mmxext flag leads to instructions in > the compiled code which the cpu does not have, then CRASH. > > But the SSE instruction sets supersede MMX (and mmxext) and so the > mmxext flag is really unnecessary on Core i7 and many newer processors. > (Ffmpeg may have reasons for still using MMX but I don't know.) > > Frank Peters
True, but I don't think it's likely as the old mmxext flags (AMD only possibly?) became a subset of SSE. That said, report the bug and copy us on the report. I'd be interested in hearing what the developers say. Cheers, Mark
