[Ffmpeg-devel] video4linux2 input format?
Thu Jan 26 13:02:42 CET 2006
On Thu, 2006-01-26 at 12:30 +0100, Erik Slagter wrote:
> > Can anyone help me in mapping the other V4L2_PIX_FMT to the equivalent
> > PIX_FMT?
> Please note that some drivers (notably the cx88???) only support a very
> small subset of these layouts.
Yes, I know. My (currently unimplemented) plan is to add support for all
the possible V4L2 formats, and to check which formats the card really
supports when opening the device.
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.
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