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View Full Version : Need help with DeComb (Telecide)


[MA]Debito
13th November 2005, 11:40
After searching through the forums for countless hours and playing around with the settings of Telecide(), I've developed a near-perfect IVTC for Cowboy Bebop. The only thing I'm really having a problem with is that every once in a while (usually at the beginning or ending of scenes) I'll get a frame with combed areas like so:

http://members.cox.net/debito/combed.png

I am using DeComb 5.21 VFR 1.3. with the following script:

Mpeg2Source("C:\Documents and Settings\debito.DEBITO-08D96D80\Desktop\BebopTest\BebopTest.d2v")

Crop(8,0,-8,0)

Lanczos4Resize(640,480)

Telecide(order=1, post=2, guide=1, dthresh=0, gthresh=0, chroma=true, nt=0, blend=false, back=2, bthresh=0)

I've tweaked with every setting Telecide has to offer. I messed with Decimate as well but got better results when I used Forced Film during the .d2v creation. I've been at this for about 10 hours straight now and I'm going borederline insane!

Please help me get rid of these combed frames so I can have my perfect IVTC :)

Thanks,
[MA]Debito

Anonymouses
13th November 2005, 12:37
Try doing a manual override for those scenes that come out combed. Either that or try TIVTC as in many cases where DeComb has problems such as this TIVTC doesn't.

foxyshadis
13th November 2005, 12:43
If you've tweaked around with every setting and the results still aren't acceptible, you probably need to try TFM or IT. Of course, that means you have to start all over again with the tweaking.

Wait, do you mean that's the very first frame of the scene? If that's the case it might be a cut in the middle of the telecine pattern, in which case no good match exists so you won't be able to perfectly ivtc it, though you could add a deinterlacer. In fact, if it's almost perfect, you could add a comb-check (I think tivtc or tdeint comes with iscombed) and deinterlace only those frames.

(I don't have my dvds handy or I'd check.)

[MA]Debito
13th November 2005, 19:33
No this is like frame 997 or something, and I have tried the manual override and it doesn't seem to work. I think it's broken.

In fact, if it's almost perfect, you could add a comb-check (I think tivtc or tdeint comes with iscombed) and deinterlace only those frames.

How do I go about getting that function to work? I played around with it for about an hour with no real success.

foxyshadis
13th November 2005, 19:53
Unfortunately IsCombedTIVTC only works in a conditional environment, ie,

deinterlaced=tdeint(mode=1,type=3)
conditionalfilter(last,deinterlaced,last,"IsCombedTIVTC","=","true")

If that doesn't work it'd probably be better to try tfm than tweaking the parameters here.

[MA]Debito
13th November 2005, 20:29
OH! I see how it all works now, thank you much.

Edit: Didn't phase the frame one bit.