[MPlayer-users] Produce 422 format pixels with mencoder for mpeg4-encoding

[Reimar Döffinger]

On Sun, Dec 08, 2013 at 11:30:23PM +0000, Carl Eugen Hoyos wrote:
> James Board <jpboard2 <at> yahoo.com> writes:
> 
> > Can I mpeg4-encode files with mencoder and produce
> > files with some kind of 422 pixels?
> 
> No / you will have to quote the specification if you 
> think that should be possible.

Even if some obscure part of the huge specification allowed
it (it doesn't), nothing could decode it.
The only mainstream codecs with 422 support are MPEG-2 and H.264.
(a few more obscure ones like theora, dirac, prores etc. support it as
well).