[MEncoder-users] ASP or AVC?

Rich Felker dalias at aerifal.cx
Fri Dec 16 20:41:32 CET 2005

On Fri, Dec 16, 2005 at 12:50:48PM +0100, Hans-Carl Oberdalhoff wrote:
> 2005/12/16, Gábor Farkas <gabor at nekomancer.net>:
> > so,
> > when encoding, does it still make sense to use ASP codecs, or the AVC
> > ones provide better quality now?
> If you want to choose only by quality, take h.264/avc. Even in "early
> devel stage" x264 gives really good results, when using the right
> parameters (basically, a lot of frameref, a lot of b_frames etc.). But
> it is REALLY slow then.
> If you want best quality per speed take mpeg4/asp.

Keep in mind that the speed issue is not only at encoding time, but
also decoding time. You need a computer 2-3x as fast to decode AVC as
to decode ASP, and the compression gain is at most 30% and more like
10-15% for most sources.


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