[Mplayer-advusers] [BUG] mplayer bugs away with MPEG1 clip

[Michael Niedermayer]

Hi

On Thursday 05 February 2004 15:01, Gabucino wrote:
> http://www.kontrollfilm.hu/media/kontroll_320x240.mpg
>
> 1. MPlayer detects MP3 audio instead of MP2, and so the sound goes br0ke.
> 2. Try watching it with -vf spp=(1-...), the image will blur and shake.
>    It's very unwatchable.
yes, its a very interresting sample :)
if u look at it with '-vc ffmpeg12 -lavdopts debug=1' u will see that the 
QP/quantizer changes by a factor of 20! between frames (yes even P->P not 
only P->B), and as postprocessing filters use qp for deciding how much to 
filter it flickers, whoever encoded that should be shot :)
u can reduce the effect by forcing a specific qp for spp

-- 
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