ffmpeg vob -> h264 antialiasing

[leandro]

Hey everyone!

I'm trying to convert a vob (cartoon) to mp4 (h264) using ffmpeg:

ffmpeg -i in.vob -vcodec libx264 -an -b:v 1200k -deinterlace preview.mp4

Then I got the output with alias.
Is there a way to fix the aliasing (antialiasing)?

Thanks!

[poisondeathray]

1) Most cartoons don't need to be deinterlaced, they need to be inverse telecined

2) Even if you started with aliasing issues, you can't treat this sort of thing with ffmpeg libavfilter native filters, but you can with avisynth filters (ffmpeg can accept avs scripts if you compile it with support)

[leandro]

Thanks mate!
And how do I work these steps (inverse telecined) on ffmpeg command line?

[poisondeathray]

ffmpeg doesn't have an IVTC filter yet, but I think mencoder might

The problem with deinterlacing a progressive content, telecined cartoon (assuming that's what it is, usually a safe bet), is you reduce the vertical resolution, create aliasing artifacts, and will have every 5th frame repeated

[leandro]

hmmm i see...
I'm not familiar with mencoder though.
Yep... its a cartoon. what you recommend to get the best from .vob?