Video in GK Preview Window Appears interlaced but its not??

[Staz]

I have come across a strange thing in Gordian Knot.
I open up the .d2v file inside GK and in the preview window it is easy to see the combing in the picture. Looks as if I need to add a deinterlace filter to the avisynth script correct?

However if I don't add a deinterlace filter to the script, the resulting Xvid encode has NO combing lines in it. Very strange..

Can anybody explain why I see combing in the GK preview but not in my resulting encode, remembering I have applied NO Deinterlace filters.

[unskinnyboy]

The interlacing could have been due to Telecining. So it means that you shouldn't deinterlace it. IVTC will do the trick and that's what probably happened here. Anyway don't you know in cases like this you should :script: so we know what exactly happened? Also post an untouched VOB sample.

[jggimi]

You may want to exame the original source by hand. See www.doom9.org/ivtc-tut.htm for details.

[Staz]

I've worked it out! :D

The video is definitely interlaced and the GK preview window was working correctly.

What I did was edit the .avs script so that there was no LanczosResize. I then opened the .avs in virtualdub and voila the interlace lines are present. I have come to the conclusion that after resizing the video it is very hard to notice the interlacing. :)