[MPlayer-users] pixellation with msmpeg4v2
Steve Kleene
skmpl at syrano.acb.uc.edu
Sat Mar 17 21:20:13 CET 2007
I've copied a home VHS video onto a DVD-RW (Video format) and am now trying
to encode that in a file that various relatives with XP machines can play.
With the following test:
mencoder dvd://1 -oac copy -ovc lavcopts -lavcopts vcodec=msmpeg4v2:mbd:trell \
-endpos 10 test.avi
I get a file that plays, with audio, in MovieMaker and MediaPlayer. (It
plays with no sound in PowerPoint.) Getting even this much to work in XP has
been non-trivial, but the msmpeg4v2 codec does succeed to a point.
Of course there's a problem. The image quality is what I would call
pixellated, broken up into sort of a regular checkerboard. It's like the
technique news people use to hide the identities of police informants, but
not nearly that coarse. It's especially noticeable when there's a lot of
motion, e.g. during a zoom. It looks the same when played with mplayer. The
original DVD record is fine.
I'd appreciate any suggestions on how to minimize this problem.
Unfortunately, I am stuck with making something that will work on XP. I'm
running Debian Etch and mplayer 1.0-rc1svn20070225-0.1
Thanks.
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