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

Måns Rullgård mans
Wed Jan 13 15:44:03 CET 2010

Stefano Sabatini <stefano.sabatini-lala at poste.it> writes:

> On date Wednesday 2010-01-13 14:11:28 +0000, michelle211 at comcast.net encoded:
> [...]
>> I have compiled ffmpeg/ffplay 
>> 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 
>> The post mentions using -arch=c , does that help the issue. 
>> Also I read somewhere on another post that the issue is related to
>> sdl, is there a fix for that.
>> Has anyone gotten this to work correctly. 
> Ask on ffmpeg-user, this list is only for FFmpeg development. Also you
> need to provide more information, for example FFmpeg / libsdl version,
> and which command you're executing.

For the record, the iphone is totally non-debuggable.  I've heard of
this problem before, but I can't think of a way to figure out what's
happening.  It could be a memory alignment issue; the iphone silently
ignores misaligned loads and stores.

M?ns Rullg?rd
mans at mansr.com

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