[FFmpeg-devel] decoding MPEG4 ASP video on iPhone (armv6, armv7)
michelle211 at comcast.net
Tue Jan 19 16:00:58 CET 2010
First a thankyou with the help of this maillist I was able to compile and get ffplay to work with various formats
mpg, avi and mp4.
turning off all arm optimizations and disabling posix memalign.
But there is a problem still.
At first it looks like the picture is very pixulated , but looking more closely it seems to be somekind of scaling issue. any ideas.
----- Original Message -----
From: "M?ns Rullg?rd" <mans at mansr.com>
To: "FFmpeg development discussions and patches" <ffmpeg-devel at mplayerhq.hu>
Sent: Wednesday, January 13, 2010 4:48:42 PM GMT -05:00 US/Canada Eastern
Subject: Re: [FFmpeg-devel] decoding MPEG4 ASP video on iPhone (armv6, armv7)
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.
> 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.
mans at mansr.com
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