>Thanks (merci) Laurent. I have a better idea now.
 >From what I understand I can (almost) easily modify YUV to RGB
 >values and RGB to YUV values of a pixel by random access as long a I
 >have the proper data in the proper tables.

Ugh... no, it's not so simple.

Some clarifications:

 1)  For the sake of precision, the colorspace is "Y'CbCr", not "YUV".

 2)  The chroma channels are not at the same resolution as the luma channel
      (4:2:0 subsampling) and to make them the same resolution requires
      upsampling.

The yuv4mpeg(5) manpage describes the YUV4MPEG2 stream format.

See http://www.mir.com/DMG/ for additional information on colorspaces and
 subsampling standards, and links to even more information on the same.

-matt m.


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