Interlaced avi files needs -vf il=d,il=i

[lorefice2@…]

I just encoded a dvb-t stream via mencoder to an interlaced xvid.
When i play it back using -vf yadif=1, the pictures skips and flickers, it seems to me that somehow yadif needs to know that the stream is interlaced (note that on the original one right from tvb-t dongle yadif works fine).

Infact, issuing mplayer xvidinterlaced.avi -vf il=d,il=i,yadif=1 produces an extremly smooth movie, but there is the drawback of higher cpu time.

[cehoyos]

Does this also happen if you use lavc instead of xvid (the bottom-field-first flag seems to get lost while encoding)?

[reimar]

You should be able to use -field-dominance to avoid the issue at no performance cost.

[lorefice2@…]

(In reply to comment #1)

Does this also happen if you use lavc instead of xvid (the bottom-field-first
flag seems to get lost while encoding)?

I tried to encode with:
lavcopts vcodec=mpeg4:threads=2:vbitrate=3000:ildct:ilme
...but no change.

(In reply to comment #2)

You should be able to use -field-dominance to avoid the issue at no performance
cost.

Yeah, field-dominance=0 fixed the issue.
So it appears to be an (unmaintained?) mencoder problem, still i wonder why adding -vf il=s has no effect.

If you guys confirm that, the bug can be closed as invalid,
Thanks.