[Open-graphics] RGB/YUV converstion... importance?

[Loren Merritt]

On Wed, 13 Sep 2006, Attila Kinali wrote:

> On Wed, 13 Sep 2006 22:51:16 +0100
> josephhenryblack <josephhenryblack at yahoo.co.nz> wrote:
>
>> I have added croma subsampling and YUV to the glossary, but you may wish
>> to review it http://wiki.duskglow.com/tiki-index.php?page=Glossary
>
> 4:2:1 does that even exist? I've never seen it nor
> heard of it

I've never heard of it either, and it doesn't sound likely.
4:2:1 would have 3 U/V samples per 8 Y samples, e.g.

YCY YCY

Y YCY Y

YCY YCY

Y YCY Y