That awful combing effect

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 6:35 pm

Hello all. I'm sorry if this is a noob question, but what is it exactly that causes that awful combing effect that I get when I rip my DVD? Should I try the Decomb filter and see if that helps at all? I've run the avs file through VirtualDub and used Inverse telecine but I've still got combing. What causes this?

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 6:36 pm

Also I should ask how I can rectify this problem.

AbsoluteDestiny · Post by **AbsoluteDestiny** » Fri Aug 30, 2002 7:11 pm

y2kwizard wrote:Hello all. I'm sorry if this is a noob question, but what is it exactly that causes that awful combing effect that I get when I rip my DVD? Should I try the Decomb filter and see if that helps at all? I've run the avs file through VirtualDub and used Inverse telecine but I've still got combing. What causes this?

Virtualdub's internal IVTC will do nothing for you.

Decomb will probably help - why not try it? You could have tried it out quicker than it took you to make these two posts.

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 7:48 pm

Well, I am still getting some combing. Granted, the combing was never just horrible in the first place, but it's still there. WHat's causing this? Is it the DVD itself? I haven't seen any combing in the DVD, though...anyone have any ideas?

Eek-1 · Post by **Eek-1** » Fri Aug 30, 2002 8:48 pm

What method do you use to rip DVD?

I used to have that problem sometimes when using FlaskMPEG/XMPEG, but none with GordianKnot.

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 9:01 pm

The method I use is to rip the VOB using SmartRipper then create a d2v project w/ DVD2AVI and use the d2v file to make my avs file with AviSynth.

I have just done the whole process again, this time capturing a different section of another DVD in the series, and I still get the comb effect. It seems to comb most when there's a lot of motion in the video: like when the camera is still and an airplain flies towards and then over the camera...pans...things of that nature seem to have the worst combing.

This combing DOES NOT occur if I'm just watching the DVD in my DVD player.

So does anyone know what's going on? Thanks a lot for your help. I guess it'd help to know WHY the combing is going on......I don't understand why it should comb in the avs file but not while watching the DVD........

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 9:08 pm

AND I just went into VirtualDub and output an AVI file just to make sure the combing problem didn't have anything to do with the MPEG2DEC.dll not being fast enough.......the AVI still had combing effect.

Anyone have a clue what I'm doing wrong

y2kwizard · Post by **y2kwizard** » Fri Aug 30, 2002 9:19 pm

OH and also i needed to mention that I have all the most updated software that is suggested in the forums. and in ErMaC's guide. SOrry I forget to post all of these in one single, coherent post.

AbsoluteDestiny · Post by **AbsoluteDestiny** » Sat Aug 31, 2002 3:24 am

Are you sure you are using footage that CAN be IVTC'd?

IVTC is for use on things that were originally 24fps, it is not to be used on everything ever.

Also, what you may be seeing as combing could actually be an effect of postprocessing. Try Telecide(post=false) and see how it looks to you.

Anyway, I get the impression that what you need is to deinterlace, not IVTC.

ErMaC · Post by **ErMaC** » Sat Aug 31, 2002 4:52 am

I think he's confusing Combing with Interlacing.

Your footage is most likely interlaced - and needs to be IVTC'd using Decomb or just deinterlaced.

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That awful combing effect

That awful combing effect

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