[MPlayer-users] Comparison of different software scaler types

Michael Niedermayer michaelni at gmx.at
Thu Oct 16 13:31:57 CEST 2003


Hi

On Wednesday 15 October 2003 12:05, Matthias Wieser wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>
> Am Mittwoch, 15. Oktober 2003 02:05 schrieb D Richard Felker III:
> > > - sws 0    produces acceptable results
> > > - sws 1    produces blurred images
> >
> > At
> > first glance it appears to be a bug that 1 blurs the image while 0
> > doesn't (they're both bilinear), but in fact 0 is a hacked/optimized
> > version that only does correct bilinear scaling for upscaling.
>
> Maybe -sws 1 really has a bug. I compared Mplayer's bilinear and bicubic
> scaling with Gimp. Bicubic looks very similar, but -sws 1 looks really
> flat compared to gimp's bilinear filter.
>
> I have made a gimp file with both versions of the png files, where you can
> toggle the display of the mplayer image to show the differences.
> -> http://home.knuut.de/MWieser_/linear.xcf.tar.gz (600kb)
please tell us exactly what filters u used and which resolutions, and 
mplayer/mencoder commandlines used would be helpfull too

[...]
-- 
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



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