Major ivtc problem....plx help !

[puscha]

hey

ive encountered a strange problem...

im trying to IVTC cannibal holocaust..

the source is NTSC 30fps...and i know that very few movies out there that are captured in NTSC...most are captured in Film (progressive) 24fps and then converted.

On a Pure NTSC source 5 out of 5 frames are interlaced...so no inverse telecine can be done...

Well, now to the problem...on a pattern of 5 frames...

There are 2 frames who has the normal Interlace profile, 1 is a Non interlaced frame(good one)...and then there are 2 frames that has some strange artifact like interlace..

i tried tmpgenc and havent found any solutions....
tried some different settings in decomb but without succes, now..im not very used to working with decomb...since ive always performed ivtc with tmpgenc and recieved excellent result...i do the ivtc the manual way...the auto sucks..

Any Ideas, suggestions and Help is welcome :)

[DJ Bobo]

Very known problem which you can also find on other DVDs like the Evangelion DVDs. Those DVDs aren't telecined the standard way, so IVTC can't be applied.

The most appropriate method is bobbing the whole thing to 60fps.
The AVS script will look like this:

mpeg2source("blabla.d2v")
Bob()
crop(a,b,c,d)
BicubicResize(x,y)

You better choose a rather low resolution (something below 512x...), since 60fps are a lot and consume very much bitrate. Playback will be also very CPU intensive.
Be sure to set the refresh rate of your monitor to 120Hz while playback to have the smoothest motion possible (120Hz are possible if you lower the resolution to 640x480 on most monitors)

[Guest]

Probably you have the dreaded blended fields. But to be sure, post an URL where we can download a source clip.

If it is blended fields the Decomb help file tells you your options.

[puscha]

DJ Bobo:

thumping it up to 60fps doesnt realy seem like a good solution for me, since im doing it for some friends aswell, but maybe its the only way.....

neuron2....there is shit loads of blended fields...since it seems impossible to get rid of the artifact interlace(or what the hell u should call it)...ive actually managed to ivtc it down to 23,fps succesfully (no jerky playback)...so it is a film source...

is it possible in decomb to get rid of the ghosting effect that the artifact interlacing produce when i just deinterlace em....looks like shit...


thax for the ideas and help..

[Guest]

I can help only if you make a source clip available.