[Ffmpeg-devel] DV decoder questions

Roman Shaposhnick rvs
Mon Dec 12 15:35:34 CET 2005

On Mon, Dec 12, 2005 at 01:18:43PM +0000, Burkhard Plaum wrote:
>   Would you apply a patch, which moves the dv_anchor to the 
>   DVVideoContext?

   Clean patches are always welcome.

> - I found, that the DV decoder doesn't set the sample aspect
>   ratio (it's 1:1 after the first decode call). To set the proper
>   ratio, one must know, if the DV is 16:9 or 4:3. I found no place
>   in ffmpeg, where this is detected (it should play no role for the
>   actual decoding). In libdv, there is a function:

   It is in libavformat/dv.c:dv_extract_video_info()
   if it doesn't survive -- if could be a bug in how you hook up
   with libavformat.


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