[Ffmpeg-devel] Gray Scale decoding of MPEG4 data and debugginglibavcodec

Matt Schuckmann mschuck
Mon May 15 23:17:19 CEST 2006

Yes really crash. Turns out it's not just the gray scale decoder mpeg4
decoding in general is crashing. Seems to have something to do with my
latest pull down of FFMPEG, I tested by old sandbox and it's seems to work

So I pulled down the latest FFMPEG stuff today and rebuilt and now I can't
find the .lib files for linking with the shared libraries. Did you change
the way things are built for the shared windows libraries?

I understand you don't support MSVC how about another debugger that does
work on a windows system?

Matt S.  

-----Original Message-----
From: ffmpeg-devel-bounces at mplayerhq.hu
[mailto:ffmpeg-devel-bounces at mplayerhq.hu] On Behalf Of M?ns Rullg?rd
Sent: Monday, May 15, 2006 12:23 PM
To: FFMpeg development discussions and patches
Subject: Re: [Ffmpeg-devel] Gray Scale decoding of MPEG4 data and

"Matt Schuckmann" <mschuck at imoveinc.com> writes:

> I'm using just libavcodec with my application and I'm experimenting with
> various options and formats and I'm having trouble decoding gray scale
> images that have been encoded with libavcodec's MPEG4 encoder using the
> CODEC_GRAY_FLAG flags option. 
> The data appears to have encoded fine (well libavcodec didn't complain,
> there is data in the file, and it's smaller than the original) but
> I try to decode it my app crashes on the call to avcodec_decode_video(). 

Do you mean it really crashes, or just returns an error?  In case of a
proper crash, please send a complete bug report as per the
instructions on the web page.

> Are there any special options or formats I need to set to make this work
> (other than CODEC_GRAY_FLAG)?
> Any help or suggestions would be much appreciated. 
> This brings up another question; can anyone give me some guidance on how
> debug libavcodec in a windows environment? The best solution would be able
> to debug it directly from MSVC++ .NET 2003 since that's my current working
> environment but I'm not totally opposed something else. 

We don't support msvc.  Sorry.

M?ns Rullg?rd
mru at inprovide.com

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