[MEncoder-users] Interleave woes with cartoons.

Dieter freebsd at sopwith.solgatos.com
Sat Mar 4 18:33:18 CET 2006

> I have a mixed telecine, progressive, and interlaced cartoon that I'm tryin=
> g to=0D
> encode, it works fine for most of the video but occasionally the interlaced=
>  parts=0D
> throw parts of the picture off badly. For example, in one segment most of t=
> he=0D
> picture is fine except for a window in the background which appears to be=
> =0D
> vibrating due to the interlacing.=0D
> =0D
> My current options are:=0D
> =0D
> mencoder dvd://1 -vf crop=3D720:480:0:0 -oac lavc -ovc lavc -lavcopts \=0D
> vcodec=3Dmsmpeg4:vbitrate=3D1600:mv0:vqmin=3D3:trell:mbd=3D0 -ofps 24000/10=
> 01 -frames=0D
> 10000 -o test_v1.avi=0D
> =0D
> I intend to use two pass encoding, but trying to stop the interlace problem=
> s=0D
> first.  I use msmpeg4 because of archive reasons.=0D
> =0D
> Any suggestions?=0D

It might be that your interlace is backwards.  There is "top field first"
and "bottom field first", and the variety of artifacts generated by having
it backwards is amasing.

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