[FFmpeg-devel] MPEG decoding on the iPhone is buggy

Måns Rullgård mans
Thu Oct 1 17:25:20 CEST 2009

"Ronald S. Bultje" <rsbultje at gmail.com> writes:

> Hi Yoni,
> On Thu, Oct 1, 2009 at 5:08 AM, Yoni Levy <yonilevy at gmail.com> wrote:
> [..]
>> I didn't use ffmpeg itself, I'm just using the libs to decode video. I'm
>> pretty sure though [..]
> [..]
>>> > I've written a mock-up iPhone application that uses the latest
>>> > ffmpeg (SVN version) in conjunction with ffmpeg4iphone patches
>>> > to play video from a file on the iPhone device.
> The rule is to use plain vanilla SVN.
> I recommend to turn off optimizations and asm while compiling ffmpeg,
> so as to turn off any of the code produced by ffmpeg4iphone. then, try
> to reproduce it using plain ffmpeg in a terminal on your iphone.

I know it is difficult to build ffmpeg for the iphone, but you really
must provide us a minimal test case to reproduce the problem.

A standard ffmpeg build for armv6 passes regression tests.  This
suggests the error is in the ffmpeg4iphone patches, not in ffmpeg svn.

M?ns Rullg?rd
mans at mansr.com

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