View Full Version : Strange problem with decomb
Zarxrax
1st November 2002, 05:14
I have an anime where the opening is 30fps progressive video, but the episode itself is 24fps. Whenever I use telecide(), this one scene in the opening will get really messed up. It looks like its getting interlaced.
I've played around with various settings for about an hour but cant find anyway to fix the problem. I even tried using an ovr file to override the field matching, but that didn't help either. I'm not really sure what the problem could be.
Right now I have just the following in my script:
Telecide(guide=1, post=false)
Decimate(mode=2)
JohnMK
1st November 2002, 14:30
How does it get messed up? Have you tried mode=1?
int 21h
1st November 2002, 14:39
Doesn't post=false mean it won't deinterlace?
slk001
1st November 2002, 15:25
Your problem is that you shouldn't be trying to telecine the 30fps opening segment. Divide your video into segments based on frames per second and telecine the 24fps parts and skip the 30fps parts.
Interlacing is what telecine'ing does. Applying a 2:3 pulldown on a 30fps segment should result in a 37.5fps segment.
Zarxrax
1st November 2002, 15:37
@John mk: It looks like this section is getting deinterlaced or something. Yes, I have tried mode 1, mode 0, etc.
@int 21h: Yes, it does. This is not the cause of the problem though.
@slk001: :confused: Who ever said anything about telecining? I'm trying to get it from 30fps -> 24fps.
slk001
1st November 2002, 15:55
Who ever said anything about telecining?
Well, actually, you did.
QUOTE: "Whenever I use telecide(), this one scene in the opening will get really messed up."
Okay, so you are trying to IVTC (that's InVerse TeleCine) the 30fps segment. But the problem is that it was never telecined to begin with (if we can believe what you said about it being 30fps progressive). But the reasons for your doing this are your reasons.
Try using Decimate() on the 30fps segment if you want a 24fps clip.
int 21h
1st November 2002, 15:58
Originally posted by Zarxrax
It looks like its getting interlaced.
Originally posted by Zarxrax
@John mk: It looks like this section is getting deinterlaced or something. Yes, I have tried mode 1, mode 0, etc.
Perhaps take a moment and a deep breath, and decide on which you actually mean, and then we can tell you the correct cause of your problem.
Zarxrax
1st November 2002, 21:11
Ok, It looks like its being DEINTERLACED there. But regardless, it looks like the solution would be like slk001 says, to not use telecide on that segment. Now if only I can figure out how to use that trim thing in avisynth...
Anyways though, if there is nothing wrong with the source to begin with, I don't see whats making it look like that. I thought decomb was supposed to be able to handle these types of hybrid clips fine?
RadicalEd
1st November 2002, 22:47
hey Zarx, what intro is it btw? I know Excel Saga's intro is 30p like that although I haven't encoded any episodes yet (just the intro) so I didnt run into the problem.
Zarxrax
1st November 2002, 22:49
Azumanga Daioh DVD.
I got it working now, with trim, finally :)
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