[MEncoder-users] Interleave woes with cartoons.

[Fredrik Eriksson]

list-catcher at hellburner.com wrote:
> I have a mixed telecine, progressive, and interlaced cartoon that I'm trying to
> encode, it works fine for most of the video but occasionally the interlaced parts
> throw parts of the picture off badly. For example, in one segment most of the
> picture is fine except for a window in the background which appears to be
> vibrating due to the interlacing.
> 
> My current options are:
> 
> mencoder dvd://1 -vf crop=720:480:0:0 -oac lavc -ovc lavc -lavcopts \
> vcodec=msmpeg4:vbitrate=1600:mv0:vqmin=3:trell:mbd=0 -ofps 24000/1001 -frames
> 10000 -o test_v1.avi
> 
> I intend to use two pass encoding, but trying to stop the interlace problems
> first.  I use msmpeg4 because of archive reasons.
> 
> Any suggestions?

for a starter, "-vf crop 720:480:0:0" 
does nothing if you have a ntsc dvd that 
already is 720x480. To remove the 
telecined frames, you have to use "-vf 
pullup,softskip", otherwise mencoder 
will just drop frames at random to keep 
the fps. If you still have some 
interlaced frames left when using pullup 
you can add the pp=l5 filter as well. It 
won't remove the frames, but at least it 
will make them less apparent.

Fredrik Eriksson