[MPlayer-users] Re: Mpeg2 encoding results

Michael Niedermayer michaelni at gmx.at
Tue Sep 2 21:41:59 CEST 2003


On Monday 01 September 2003 18:56, Nico wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Jonathan Rogers wrote:
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> >
> > Nico wrote:
> >> Well, the quality was very good, but both movies showed the usual
> >> problem that I find in every lavc encoding (mpeg1/2/4):
> >> black areas show many visible greyish blocks, at least when read from
> >> a DVD player.
> >
> > Just out of curiosity, have you found an MPEG-4 encoder that doesn't
> > have this problem as much at the same BPP?
> yes, Xvid satisfies me much more, especially because it almost never
> shows this problem.
> I also made some movies with both  xvid and lavc (and the same
> settings),  and I always liked much more the one made xvid;
> now that I think of it lavc seems to suffer from another main problem:
> wormito noise;
> I call it wormito because it's not like mosquito that is spread in dots
> without continuity; wormito shows continous  lines like worms moving
> around outlines.
can u upload (to ftp://mplayerhq.hu/MPlayer/incoming and tell us that u did) 
short samples (orginal source, lavc encoded, xvid encoded & command line 
options used for both encodings) which show these problems (gray blocks & 


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

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