Hybrid video and TIVTC -> confused

[OvejaNegra]

I'm encoding Trigun right now. One of my favorites.

And to be honest, my first PHA (painfull hybrid anime)

I'm confused about some things:

First:
If the flags on the MPEG2 stream tell the DVD player what to do with the frame, but the frames are inside in natural state (23.97 p)
why with trigun, if i enable the option ignore pulldown flags the frames still interlaced? Are they hard encoded in that way? Why?

Some tools like TIVTC use a D2v project as reference or input. If the D2V project contains information about the flags, then why TIVTC and other tools are so complicated? Why sometimes TIVTC makes mistakes and leave interlaced frames?

Why not just follow the flags on the D2v project and deinterlace/drop/ revert telecine with that?

Second: i saw this script:
Current script:LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\FFT3DFilter\fft3dfilter.dll")
DGDecode_mpeg2source("D:\Transform Rip\VTS_04_1.d2v",info=3)
ColorMatrix(hints=true)
FFT3DFilter(sigma=3,bw=32,bh=32,bt=3,ow=16,oh=16)
edeintted = AssumeTFF().SeparateFields().SelectEven().EEDI2(field=-1)
tdeintted = TDeint(edeint=edeintted,order=1)
tfm(clip2=tdeintted).tdecimate(mode=1,hybrid=1)
FFT3DFilter(sigma=3,bw=32,bh=32,bt=3,ow=16,oh=16)

here:
http://forum.doom9.org/archive/index.php/t-119190.html

how it works? (not the FFT3DFilter) why using separate fields?

It's for better detection of the interlaced frames (if the two fields are differents it's interlaced)?


I'm listening for any advice regarding Trigun.

Thanks and sorry for the english.

[Adub]

You may want to check out the new function AnimeIVTC(). Also the reason for separate fields is to throw away one of the fields and interpolate the other field using eedi, thus resulting in a progressive frame.

[Blue_MiSfit]

Why not just follow the flags on the D2v project and deinterlace/drop/ revert telecine with that?


Quite simply, because you cannot count on those flags to be accurate :)

~MiSfit

[thetoof]

Yup, animeivtc will most likely do what you need. Check the guide for mode=5 or 6