[vlc-devel] Minor wiki updates

Rémi Denis-Courmont remi at remlab.net
Fri Jan 27 22:47:39 CET 2012

Le vendredi 27 janvier 2012 22:51:04 Juha Jeronen, vous avez écrit :
> (For example, what to make of YV12? As in, why would anyone want the U/V
> planes in reverse order?

The order of U and V is rather arbitrary. For planar format it does not matter 
much to software. Each plane has its own pointer anyway.

So optimizing for hardware might actually make sense. Also YV12 is 
unambiguous. It means Y V U plane order in contiguous memory or Y V U plane 
order in the VLC picture_t table depending on the situation.

On the other hand, YVYU and VYUY are not very explicit names. I have not seen 
them used in real life. Most webcams and graphic adapters support YUY2 and 
UYVY instead.

Rémi Denis-Courmont

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