dgindex, TIVTC and vfr

[Daodan]

Maybe the title isn't the greatest, but couldn't find a better one.
So what I want to know is, first of all, how does dgindex decide how much film and how much video there is in a stream. My problem is that after passing a HD file through dgindex it sais 80% film (a part of the file, not credits, not beginning, just movie). After trying to ivtc with TIVTC I wasn't happy with the result on some panning scenes, so I thought that the best solution is vfr. I tried the 2-pass vfr using TIVTC, and to my surprise it sais after finishing 100% film. I tried changing the treshold, maybe the sensitivity wasn't good, all the same. Why this difference? And after all I decided to analyze all the frames manually. The pattern is 3 progressive, 2 interlaced always (well, I didn't finish it yet but in the panning scenes it was definitely like that), so that would mean film.
Can someone explain these things to me please? Thank you for your time.

[Guest]

DGIndex gets its film percentage only by looking at RFF flags, which means it can recognize only soft telecining. But a clip may combine hard and soft telecining, so that if you look at the clip served with Honor Pulldown Flags, you may see perfect 3:2 pulldown throughout, but in some sections that is achieved via RFFs while in others it is achieved by real field duplication.

[Daodan]

Thanks for the fast reply. It seems then that I should trust the results TIVTC gave me. One more thing though. Why the jittering in panning scenes, if it's only film?

[Guest]

Why the jittering in panning scenes, if it's only film? I'd have to see the source. Post a link to a short unprocessed source clip that shows the problem.

[Daodan]

Ok, here is a link of one of the problematic scenes:
http://www.savefile.com/files/1467344
The worst part is just after that sunrise scene.

[Guest]

Contrary to your initial post, that clip shows 100% FILM. It is clean 3:2 pulldown via RFFs all the way through, so you can do Force Film in DGIndex. I thought you were going to upload a clip that shows the problem!

[Daodan]

Sorry, it seems I cut a bit to much. The link is the same (I put a bigger file).

[Guest]

The longer file is 3:2 pulled down throughout, but some is hard telecined and some is soft. So I made a DGIndex project with honor pulldown flags. Then I used this script to serve to VirtualDub and then encode to an XviD. The result played fine with no "jittering".

loadplugin("dgdecode.dll")
MPEG2Source("E:\tmp\Daodan\test.d2v")
assumebff()
telecide(post=0)
lanczosresize(720,480)
decimate()

[Daodan]

Thanks, I'll give a try to your method of decimation.