[MEncoder-users] new doom9 codec comparission (draft 1)

Rich Felker dalias at aerifal.cx
Fri Dec 9 18:59:02 CET 2005

On Fri, Dec 09, 2005 at 04:21:35AM -0800, Corey Hickey wrote:
> Jan Knutar wrote:
> >>sorry for intervening so late, but I wonder if you tested the effect of 
> >>chroma
> >>motion estimation (*cmp += 256)
> > 
> > 
> > Man page says it doesn't work with b frames?
> I did try it for snow, however, in the early stages where I was working
> on a several-minute clip. The result was a 0.01 dB drop in PSNR, a 75%
> increase in encoding time, and no result on quality that I could discern.

chroma motion est should not be useful unless you have a movie where
significant moving objects are textured only in chroma and their luma
channel is constant. (i.e. the same movies that would make little
sense to a colorblind user)


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