Hybrid DVD

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Hybrid DVD

Postby x265 » Thu Jan 31, 2013 2:59 pm

How do i deal with a hybrid source?
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 5:03 am

http://imageshack.us/f/59/capturepuuk.png/

Code: Select all
# timecode format v1
Assume 23.976
0,744,29.9702
745,32380,23.9760
32381,34601,29.9702
<< timecodes taken from an encode of this show by a group called Figmentos.
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 5:11 am

Image << ED

Image << OP

Image
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Re: Hybrid DVD

Postby Mister Hatt » Wed Feb 06, 2013 6:09 am

I wouldn't hold much value in the timecodes from a random fansub group. Let's start with a dump or screenshot of the DGIndex info box output. Run it in both honour pulldown and ignore pulldown modes.
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Re: Hybrid DVD

Postby mirkosp » Wed Feb 06, 2013 6:42 am

Actually Figmentos' release is rather reliable. There are still some mistakes, since it's a long series and so some scenes went accidentally overlooked, but the encoder did properly go over the whole series in yatta, so at the very least the vfr timecodes are reliable.
Either way, screenshots like those don't help, but I've had the first DVD in my hands, and as far as I recall the only things with fuck with the metrics are the scrolling text bits. Rest is a simple 3:2 pulldown. This seems to be confirmed by the timecodes of figmentos, which just vfr the ending (the animation on the side actually is 23.976 tho, so the best solution would have been to ivtc_txt60mc, assuming the text was 60i and not 30p, otherwise try to interpolate the text on its own ─ simple enough being white text on black ─ and IVTC the image and put them together through a simple stackhorizontal) and a bit at the beginning, so just the fading text with the animation behind (they both are 29.97).
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 6:51 am

HONOR PULLDOWN FLAGS
Image

IGNORE PULLDOWN FLAGS
Image
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 6:54 am

mirkosp wrote:Actually Figmentos' release is rather reliable. There are still some mistakes, since it's a long series and so some scenes went accidentally overlooked, but the encoder did properly go over the whole series in yatta, so at the very least the vfr timecodes are reliable.
Either way, screenshots like those don't help, but I've had the first DVD in my hands, and as far as I recall the only things with fuck with the metrics are the scrolling text bits. Rest is a simple 3:2 pulldown. This seems to be confirmed by the timecodes of figmentos, which just vfr the ending (the animation on the side actually is 23.976 tho, so the best solution would have been to ivtc_txt60mc, assuming the text was 60i and not 30p, otherwise try to interpolate the text on its own ─ simple enough being white text on black ─ and IVTC the image and put them together through a simple stackhorizontal) and a bit at the beginning, so just the fading text with the animation behind (they both are 29.97).


I'm confused.
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Re: Hybrid DVD

Postby Mister Hatt » Wed Feb 06, 2013 7:08 am

What Mirko meant was that it isn't hybrid, just the ending credits use content with different framerates. There are two ways to handle it (or actually three but the last one is a terrible yet hilarious idea I'll leave as an exercise to the reader, think oldschool). The first is to use ivtc_txt60mc to get the framerate correct, and the second is to split it into two clips, IVTC the first as normal (the animation), and then interpolate the text to 23.976fps and stick them together again. It's really up to you but I would recommend ivtc_txt60mc because it's good, and also helps you out with the blip at the beginning thanks to the fade.
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 9:05 am

Could you post the script for doing this?
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Re: Hybrid DVD

Postby Mister Hatt » Wed Feb 06, 2013 9:10 am

It's not that difficult. You put ivtc_txt60mc() with whatever arguments you want. If you need to split, you use trim and crop and regular variables, then stackhorizontal(). I don't see the difficulty.
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 9:25 am

Code: Select all
MPEG2Source("C:\Users\Abhijith Nair\Desktop\Screenshots\vol1.d2v", cpu=0)
ivtc_txt60mc()<<

When i added this line in avspmod it results in an error saying invalid argument to the function "ivtc_60mc".
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Re: Hybrid DVD

Postby Mister Hatt » Wed Feb 06, 2013 9:37 am

You need the script for it if you're gonna use it, I thought google would have indicated that, or at least a basic understanding of how avisynth works.
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 9:44 am

I have the script.
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Re: Hybrid DVD

Postby mirkosp » Wed Feb 06, 2013 10:39 am

You don't use it like that. For starters you use it only where you have the 60i text along with the telecined part, and you MUST specify the 3:2 pattern as a parameter.
For instance, if you trim and the part you apply it on is a cnncc, you'd use ivtc_txt60mc(0) to tell it that pattern (1 for ccnnc, 2 for cccnn, 3 for ncccn, 4 for nnccc ─ going beyond will result in the filter doing a %5, so 5 gets counted as 0, 6 as 1 and so on).
Obviously, if there is a pattern change, you need to make different trims and use it with different values and then put it back together.

But as I said, the easier solution in this specific situation is just to interpolate the text on its own, since you won't need to check the pattern; ivtc the image on its own (even auto-ivtc if you want to keep it simple), and then stack back together. Specifying the wrong pattern in such a case won't harm since ivtc_txt60mc won't actually touch the image on the right just interpolate the text on the left.
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Re: Hybrid DVD

Postby x265 » Wed Feb 06, 2013 1:56 pm

Please show me a sample code.
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