[MPlayer-users] mpeg_quant test

[Michael Niedermayer]

Hi

On Thursday 06 November 2003 12:21, Tuukka Toivonen wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> I complained that MPEG-4 made objects moving on dark background leaved
> trails at low bitrates. Richard suggested using mpeg_quant. I didn't try if
> it helps (I'm using higher bitrates instead), but I did made some PSNR
> tests.
>
> Result: mpeg_quant decreased hugely PSNR.
mpeg_quant + trellis quantization is not a very well tested combination and 
may be buggy (maybe u want to compare mpeg_quant vs. h263 without trell, i 
dont really expect a different relative behavior but who knows ...)

btw, if u have some video which shows "trails" when encoded, then i would be 
interrested to get that

[...]
-- 
Michael
level[i]= get_vlc(); i+=get_vlc();		(violates patent EP0266049)
median(mv[y-1][x], mv[y][x-1], mv[y+1][x+1]);	(violates patent #5,905,535)
buf[i]= qp - buf[i-1];				(violates patent #?)
for more examples, see http://mplayerhq.hu/~michael/patent.html
stop it, see http://petition.eurolinux.org & http://petition.ffii.org/eubsa/en