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

[Tom Evans]

On Mon, Dec 9, 2013 at 2:18 PM, James Board <jpboard2 at yahoo.com> wrote:
>>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).
>
> Does the MPEG4 spec not support 422 pixels?  I didn't know
> that.  If so, then there's no point in me telecining and editing in 422
> format, right?

Which MPEG-4 spec? You get plenty to choose from....

I don't think MPEG-4 Part 2 (divx, Nero digital, xvid etc) supports
it, at least not in any commonly used profile. MPEG-4 Part 12
(AVC/H264) definitely does.

Cheers

Tom