[FFmpeg-devel] Irregular codec

Jesse L. Zamora xtremek2008
Mon Jun 30 12:44:55 CEST 2008

Benjamin Larsson wrote:
> On Fri, Jun 27, 2008 at 07:58:11PM -0400, Jesse L. Zamora wrote:
>> Hello All,
>> I've been writing a demuxer and a decoder for the SMV format (SigmaTel 
>> Motion Video) for ffmpeg. It begins with a WAV file, then the SMV header 
>> afterwards, then an array of jpegs. I was trying to get my demuxer to be 
>> able to read the SMV header, but since it's practically in the middle of 
>> the file, the buffer is not that big! So I can't read the header through 
>> the buffer. How can I somehow read in the middle of the file with the 
>> demuxer_probe(AVProbeData *p) function to be able to read the header 
>> (especially with demuxer_read_header())?
>> Thanks
>> Xtreme Kommander
> Hi, can you derive that it is a SMV file from the wav header ?
> MvH
> Benjamin Larsson
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I was hoping that I could, but it seems that the WAV header has only 
fields for WAV.....and the SMV header is in the middle of the file.

Xtreme Kommander

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