[FFmpeg-user] mpeg4 part2 ,

[Michael Bradshaw]

On Fri, Jul 6, 2012 at 10:53 AM, farzaneh tabataba
<f.s.tabataba81 at gmail.com> wrote:
> Dear friends
>
> Hello
> I have a question, Would you please answer my question?
> We want to compress a dataset, with Mpeg4 part2, and we want to save the
> chroma subsampling ratio to 4:2:2.( the chroma subsampling for source file
> is also 4:2:2).
>
> Which software do you suggest  for doing this compression? Does Mpeg4-part2
> support 4:2:2, or only mpeg4_part 10 support 4:2:2?
> we tried avanti, but it says 4:2:2 is not compatible with mpeg4.

You just asked this question, and it was answered:

http://ffmpeg.org/pipermail/ffmpeg-user/2012-July/007699.html
http://ffmpeg.org/pipermail/ffmpeg-user/2012-July/007707.html

But I just googled for you and read part of the MPEG-4 Part 2
document. Page 111, table 6-13, under chroma_format shows that 4:2:0
is the only format supported.