The most definitive video format description list (at least for the AVI
formats) is:
http://www.webartz.com/fourcc
Which doesn't list any 4:2:0 packed formats.
If V4L/V4L2 is going to include the Phillips packed 4:2:0 format, then
it'd probably be best to call it PHILLIPS_420 or something like that,
since there are obviously very many possible 4:2:0 packed format
component orderings.
Ben
P.S. I havn't forgotten to release my conversion library - just that
real life has interferred (coming real soon now).
Gerd Knorr wrote:
>
> > Should you have any questions, please ask...
>
> [ Cc'ing the video4linux list ]
>
> Is there any clear definition how VIDEO_PALETTE_YUV420 should look
> like? There are two contradicting usages for VIDEO_PALETTE_YUV420:
>
> (1) - the one used by the philips driver, which is a packed version
> of VIDEO_PALETTE_YUV420P.
> http://www.smcc.demon.nl/webcam/api.html#palette
> (2) - the v4l1 compatibility layer for v4l2 assumes
> VIDEO_PALETTE_YUV420 == VIDEO_PALETTE_YUV420P.
>
> Alan's API document has no details about VIDEO_PALETTE_YUV420 ...
>
> On the web I havn't found any specification for a packed YUV 420
> format, everybody seems to use "YUV420" for the planar format
> (guess that's why v4l2's compatibility layer makes no difference
> between VIDEO_PALETTE_YUV420 and VIDEO_PALETTE_YUV420P).
>
> Anyone knows whenever the somewhat strange yuv packing used by
> philips is standard? And whenever it is really called "YUV420"?
> URL?
>
> Gerd
>
> --
> Gerd Knorr <[EMAIL PROTECTED]>
>
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