PDA

View Full Version : Feature Request: Default avs


neo_sapien
24th May 2002, 15:01
I hope this doesn't come off as bitching, I was just encoding an episode of TNG from a DVD NTSC source and had a small idea. These episodes are all hybrid, btw. Usually like 80% Film, 20% NTSC in DVD2AVI.

There could be a few different AVISynth scripts, to match your source. For instance, if your source is FILM, the script remains untouched. If your source is Hybrid (NTSC/FILM), the following lines of avs script are added in:

Telecide()
Decimate(mode=1,threshold=50)

under their respective categories.

If your source is NTSC, the following line of script is added in:

FieldDeinterlace()

again, respective categories.

A drop-down menu would allow the user to select whether his source is Film, Hybrid, NTSC, etc.

Eh, or maybe a telecide button under "Field Operations" would be easier, as Field Deinterlace is already there.

Anyways, comments, flames? (j/k, please no flames :) )

manono
24th May 2002, 16:39
Hi-

It's a good idea in theory, but it's much more complicated than that. There are plenty of DVDs that show as 100% NTSC in DVD2AVI which can be IVTC'd with no problem. And there are plenty of what you call "Hybrids" which can also be IVTC'd, and don't need Decomb's Mode=1 (most, I would say, although perhaps not TNG). And you can't rely on DVD2AVI to tell you what you've got. The only way is to look at the frames in different places. And if you're knowledgeable enough to determine the kind of source material, then setting up and editing the .avs shouldn't be any problem.

As near as I can tell, the only time DVD2AVI is guaranteed to be correct is when it shows as 100% Film, and then you can Force Film and be done with it. I've had plenty of DVDs that showed as 98-99% Film, which when Forced Filmed left behind some interlacing and jerkiness in spots, and not just at the very beginning. So I had to reencode with IVTC.

If The WEF did as you request, there'd be people coming back saying "Hey! It showed as 100% NTSC and I used your FieldDeinterlace script, and now my movie is all jumpy!"

neo_sapien
24th May 2002, 17:18
My bad, I did not know that.