[MPlayer-users] Problem Encoding Solid Color Objects With LAVC MPEG4

Michael Niedermayer michaelni at gmx.at
Sun Sep 21 20:29:23 CEST 2003


On Sunday 21 September 2003 03:41, Angel wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> I've reported this problem before but nothing really came of it. I more or
> less dismissed the problem as being a limitation of mpeg4/bitrate etc.
> However, I recently encoded the movie Bad Boys and during one of the scenes
> there is a solid colored background behind one of the characters and it
> came out looking like an 8 puzzle with large blocks shifting around. I
> decided to try encoding the movie using DIVX 5.1 and virtualdub just to see
> how the results would compare. To my extreme disappointment... the DIVX 5.1
> version looked 1000% better. The background looks kind of noisy (as it
> should) and there are no large blocks moving around. Just for the hell of
> it... I also tried encoding it using mencoder/xvid. The results were very
> similar to the DIVX 5.1 results. I don't know if I should report this here
> or to the ffmpeg list. I am willing to upload the source/results if that
> would be helpful. Just for reference, here are the encoding parameters
perhaps mbd=2 or scplx_mask would help

if not then please upload source + (xvid + divx + lavc encoded) to 
ftp://mplayerhq.hu/MPlayer/incoming and tell us that u did

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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