[Ffmpeg-devel] video4linux2 input format?

Luca Abeni lucabe72
Thu Jan 26 13:02:42 CET 2006

Hi Erik,

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.

Copy this in your signature, if you think it is important:
                               N O    W A R ! ! !

 Email.it, the professional e-mail, gratis per te: http://www.email.it/f
 Acquista ora Email.it Phone Card e comincia a risparmiare sulle tue telefonate! Clicca e scopri l'offerta
 Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=2684&d=26-1

More information about the ffmpeg-devel mailing list