Ivtc

[spawnerlista]

I have opened my movie on DVD2AVI. It is:

Aspect Ratio 4:3
Frame Type INTERLACED
Frame Rate 29.970FPS
Video Type NTSC

I have to use IVTC???? or I can use Deinterlace on Nandub?
I don´t understand why I have to use IVTC. Anyone can help me?
Thanks

[manono]

Hi-Go ahead and make a force film .d2v. The guides usually say if it's less than 95% Film, that you should perform IVTC. If that's true (less than 95%), then make your .d2v without force film, and then go ahead and IVTC.

If none of that made any sense, then you should reread Doom9's guide (actually you should reread it anyway). Good Luck.

[arminio]

I have simmilar problem - the point is that DVD2AVI does not show percentage in this case (NTSC 29.9, Interlaced)!


Also, what about movies that constatnly varies from interlaced to progressive (I have one - Planet of the vampires) when DVD2AVI repeatedly indicate one second "progressive" and other "interlaced" - one by another during playing) ? How to treat them ?

[manono]

Hey- it's my old friend arminio.

DVD2AVI does not show percentage in this case (NTSC 29.9, Interlaced)!

Then that means it's 100% NTSC, and it may be from a video source, and you may have to encode it at 29.97fps (or else it comes out jerky). To be sure, make a .d2v without forced film (29.97fps). Then scroll through it and find a motion scene. Then advance one frame at a time. If you see interlacing for 5 frames in a row, I think you have to do it at 29.97 fps (thanks DG). Either use a deinterlacer (not recommended) or GreedyHMA or Decomb (but without frame decimation). I just had my first one like that (Fawlty Towers DVD), so someone correct me if I'm wrong.

Otherwise, you can IVTC, and it should come out OK.

DVD2AVI repeatedly indicate one second "progressive" and other "interlaced"

That kind IVTC should be able to handle (but Forced Film usually can't).

[arminio]

>Hey- it's my old friend arminio.

Yep ! Me again :)

>Then that means it's 100% NTSC, and it may be from a video source,
>and you may have to encode it at 29.97fps (or else it comes out
>...

Well, I already tried with 23fpd but it comes out jerky ... it is "very muich" interlaced :) so, you recommend 29.97 ? But then GKnot does not give fine results unless I reduce resolution below 320x240 which is totally unnaceptible ... :(

>Otherwise, you can IVTC, and it should come out OK.

DOes this mean I can use force film and then turn on Inverse telecine in GKnot to achieve correct result ?

>DVD2AVI repeatedly indicate one second "progressive" and >other "interlaced"
>That kind IVTC should be able to handle (but Forced Film usually
>can't).

So, I use 29.97 and IVTC in this case ...


BTW, tips you give me to use GKnot are MARVELOUS ! I get smaller file than with Makefilm and (at least) 50% better quality !!!! IMPRESSIVE ! Thanks !

Now just need to fix this "23/29 IVTC or not" problem (well, waiting for some tips - if you are willing to help more :) ) ... and I have another question - at end of the movie 4 minutes of additional material exists which I don't want to encode. How to limit frames in Gknot/Nandub ?
I tried to set nuber of frames manually but after loading resulting stats into Gknot, it says that number of frames does not match ... also, Nandub encode entire thing (no matter what I select) and I want it not to go through last 4 min. ... any more tips (maybe to put end credits at the beginnin of this and bitrate to 0 ?) ?

[manono]

Hi arminio-
I read and answered your PM before coming back to this thread. Looks like you have a pure video source. Yep-that's why you try to avoid using 30fps if you can, but if 24fps is jerky, then you have no choice. Maybe do it for 2 CDs. And use the way I described in the PM.

One way to avoid going down to that low resolution is to use BilinearResize and put on a smoother, but you really have to experiment to make sure you don't mess it up by making it too blurry.