H.263 / H.264 / H.26l

[Mei]

Hello...

As I have seen, there is some different standard :
H.263 : It seems to be MPEG2
H.264 : It seems to be MPEG4-2
H.26L : It seems to be MPEG4-10
Correct me if I am wrong.

So my question is, is XviD codec uses H.264 or not ? And is it could use a day H.26L ?

Also, is these H.263 only meens a type of quantization or also a totally apart coding method ?

And finnally, is XviD Quantization, MPEG quantization correspond to what type of standard ??? (H.264 maybe ?)

[-h]

MPEG2 = H.262
MPEG4 = H.263 with bells on
MPEG4-10 = H.26L = H.264 = JVT = AVC

They are separate standards on how to compensate motion between frames, how to quantize error information, how to code everything to a bitstream, etc.. Quantization methods are a (very) small part of the standards. In MPEG-4 (the spec that XviD is following), the H.263 quantizer is borrowed from H.263 and the MPEG quantizer is (mostly) borrowed from H.262.

It would be a royal pain to integrate H.264 into XviD, as the differences between the standards are extensive. A separate project would be much easier, and probably more effective.

-h

[Tommy Carrot]

Originally posted by -h


It would be a royal pain to integrate H.264 into XviD, as the differences between the standards are extensive. A separate project would be much easier, and probably more effective.

-h

There is already a project for a h.264 codec, but i think some months are needed to get anything usable. The reference software is a big mess, and only 1 developer working on it.