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ericmckean / webm

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Illegal instruction, SIGILL when encoding libvpx-vp9 - using ffmpeg #811

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
I'm using the last version of libvpx (v1.3.0-3148-g6cfb854) and ffmpeg 
(N-64012-g61df081).

I tried to decode at least three diferent videos and process receive a SIGILL 
"Illegal instruction" and stops.

Full debug report can be seen here: http://trac.ffmpeg.org/ticket/3722

Looks like "avx2" extension is not supported by the current CPU, any thoughts 
on that - how may I proceed/help?

Original issue reported on code.google.com by xxle...@gmail.com on 18 Jun 2014 at 12:31

GoogleCodeExporter commented 9 years ago 
It may be related to:
https://code.google.com/p/webm/issues/detail?id=790

The AVX2 detection in libvpx is incomplete, so if you've enabled runtime cpu 
detection this could be the cause. If you can post your libvpx configure 
command line + qemu details it would be helpful.

A workaround would be to add --disable-avx2 to your configure line.

Original comment by jz...@google.com on 16 Jul 2014 at 5:44

GoogleCodeExporter commented 9 years ago

Original comment by renganat...@google.com on 9 Oct 2014 at 10:17