[FFmpeg-devel] decoding MPEG4 ASP video on iPhone (armv6, armv7)

Måns Rullgård mans
Wed Jan 13 22:48:42 CET 2010

Jason Garrett-Glaser <darkshikari at gmail.com> writes:

> On Wed, Jan 13, 2010 at 9:11 AM,  <michelle211 at comcast.net> wrote:
>> When I play an avi or mpg with ffplay I get a green distorted video.
>> much like what is described here.
>> http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2009-December/079791.html
> Just speculation, but this might be related to the fact that the
> iPhone/iPod compilers ignore the ARM ABI and don't maintain 8-byte
> stack alignment, which some functions might assume.

That was my initial thought too, but I can't see any mpeg2/4-related
functions that would need any specific stack alignment.  A few h264
functions do, and they align it manually.

M?ns Rullg?rd
mans at mansr.com

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