How to check if DVD2AVI right about interlacing?

[gembriaco]

Hi everyone

I'm trying to make a divX CD out of a wedding recorded on a PAL DVD. DVD2AVI says it's interlaced, but the forum, the relevant Doom guide and the IVTC tutorial all say that this detection isn't reliable, and that we should check by ourselves. But being new in the game, I simply don't know how to do it? ( Don't call me stupid ;) )

Thanks for your help.

[Kyo]

Just create the frameserver .avs and feed it to VirtualDub (without filters or resizers only the mpeg2souce("video.d2v")) and check frame by frame...

[gembriaco]

Thanks for your quick reply.

So if I understand well, using GKnot, after ripping I should open my .d2v in DVD2AVI, and then, after avoiding filtrations and other treatments, press "save" (or should I press "save & encode"?) to get an .avs file.
Then I should open this file with VirtualDub, and then, comparing input and output frame by frame, what should I see to know whether it is interlaced or not?

Sorry to be so dumb! ;)

[Kyo]

Press "Save", then edit the .avs with notepad and remove *all* lines except:
Loadplugin("Drive:\Path\MPEG2DEC.dll")
mpeg2souce("video.d2v")

The interlaced lines seem like a ... m.... horizontal lines between the image (Sorry the bad explain) search for a motion escene there will be a lot of them

[JohnMK]

Check this out:

http://students.washington.edu/chs4000/7738.JPG

[gembriaco]

Thanks to both of you! Light has finally penetrated my small brain and yes, my file is interlaced and therefore GordianKnot was right.

Finally, becoming an expert in interlacing was easy, but... becoming an expert in deinterlacing might be another story...;)

Thanks again