[Ffmpeg-devel] video4linux2 input format?

Erik Slagter erik
Thu Jan 26 12:59:39 CET 2006

On Thu, 2006-01-26 at 13:02 +0100, Luca Abeni wrote:

> The idea is:
> 	- First try to use the pixel format requested by the user
> 	- If it is not supported by the card, then discover which format
> 	  the card uses by default, map it to the ffmpeg PIX_FMT_* name,
> 	  and change st->codec->pix_fmt to it
> the alternative is to try all the possible formats supported by ffmpeg
> until we find one that the card likes.

This is suboptimal, because you may end up with reading YUV420 and
converting it to YUV422 inside ffmpeg, for example. This is a problem I
also would have liked to have solved (but in the end didn't ;-)).
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