Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion.

Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules.

 

Go Back   Doom9's Forum > Capturing and Editing Video > VapourSynth

Reply
 
Thread Tools Search this Thread Display Modes
Old 19th December 2020, 13:25   #1  |  Link
PackonS
Registered User
 
PackonS's Avatar
 
Join Date: Dec 2020
Posts: 4
VIVTC usage, trying to find a good config to fix combing

Hey everyone! I've been trying to come up with a good configuration that deinterlaces my source which is interlaced blu-ray.

I've gotten excellent results with other sources but I am struggling a lot to get some combed removed from this one.

I have to say I've tried a lot of methods from the ones I've found online and this one has given me the best results:

Code:
def postprocess(n, f, clip, deinterlaced):
   if f.props['_Combed'] > 0:
      return deinterlaced
   else:
      return clip
input_clip = core.dgdecodenv.DGSource(r'J:\SOURCES\Fairy Tail\FT 1\01.dgi')#.text.ClipInfo()
matched_clip = core.vivtc.VFM(input_clip,order=1, field = 0, mode=3)
deinterlaced_clip = core.eedi3.eedi3(matched_clip, field=0)
postprocessed_clip = core.std.FrameEval(matched_clip, functools.partial(postprocess, clip=matched_clip, deinterlaced=deinterlaced_clip), prop_src=matched_clip)
decimated_clip = core.vivtc.VDecimate(postprocessed_clip)
src = decimated_clip
Although this works really well in most parts, the combing persists in some areas, especially in mouth movements.


https://imgur.com/pq8Pg4b

https://imgur.com/eyGZ2GR

https://imgur.com/ttWM7FC

I would appreciate any advice, I have tweaked VFM and eedi3 values, played around with the thresh, etc. But I still have this happening maybe around 5 times per episode, it's not a lot but I want to try to encode as perfect as I can, thanks in advance!
PackonS is offline   Reply With Quote
Old 20th December 2020, 09:42   #2  |  Link
Selur
Registered User
 
Selur's Avatar
 
Join Date: Oct 2001
Location: Germany
Posts: 6,351
have you tried:
a. bobbing with qtgmc and using sRestore?
b. using vinverse/vinverse2 ?
can't say more without a sample,..
__________________
Hybrid here in the forum, homepage
Notice: Since email notifications do not work here any more, it might take me quite some time to notice a reply to a thread,..
Selur is offline   Reply With Quote
Old 20th December 2020, 14:52   #3  |  Link
PackonS
Registered User
 
PackonS's Avatar
 
Join Date: Dec 2020
Posts: 4
Thanks for the reply Selur,
I did try qtgmc and it didn't remove these specific remains of combing, it also created some artifacts in different areas,
vinverse/vinverse2 don't seem to do anything when I use them, perhaps I am not using the right config, I've uploaded
two samples directly from the source, if you could try and let me know if something works on them I would appreciate it.
As I said the combing persists in the mouth movement at some point, not always.

https://mega.nz/folder/M55kHaSQ#E0Um-eAX6MEtuxtqH-v2cw
PackonS is offline   Reply With Quote
Old 20th December 2020, 15:46   #4  |  Link
Selur
Registered User
 
Selur's Avatar
 
Join Date: Oct 2001
Location: Germany
Posts: 6,351
Problem is that those combing artifacts are present in the fields itself, so ivtc and deinterlacing will not remove them.
Also those artifacts have do not have a thickness of 1 pixel and thus will not be detected as normal combing artifacts.
Look at the output of the Vapoursynth script without any deinterlacing&co and you'll see for yourself. (alternatively, separate the fields and look at the fields)
-> normal automated field matching will not remove those artifacts
__________________
Hybrid here in the forum, homepage
Notice: Since email notifications do not work here any more, it might take me quite some time to notice a reply to a thread,..
Selur is offline   Reply With Quote
Old 20th December 2020, 21:05   #5  |  Link
PackonS
Registered User
 
PackonS's Avatar
 
Join Date: Dec 2020
Posts: 4
Thanks man, I understand and it's quite a relief, I thought I was doing something wrong!
PackonS is offline   Reply With Quote
Old 21st December 2020, 01:15   #6  |  Link
foxyshadis
ангел смерти
 
foxyshadis's Avatar
 
Join Date: Nov 2004
Location: Lost
Posts: 9,564
I would definitely check out srestore in havsfunc. You'll probably need to perform a further vertical blend after a basic bobbing and before srestore for good results, but there's not much help for it, only so much can be done for interlaced video that's been vertically resized. Yadifmod makes for a good bobber that won't introduce too many artifacts on a bad source.
foxyshadis is offline   Reply With Quote
Old 22nd December 2020, 01:14   #7  |  Link
PackonS
Registered User
 
PackonS's Avatar
 
Join Date: Dec 2020
Posts: 4
Quote:
Originally Posted by foxyshadis View Post
I would definitely check out srestore in havsfunc. You'll probably need to perform a further vertical blend after a basic bobbing and before srestore for good results, but there's not much help for it, only so much can be done for interlaced video that's been vertically resized. Yadifmod makes for a good bobber that won't introduce too many artifacts on a bad source.
Thanks for the answer! May I know how your suggestion would look written in code? Thanks!
PackonS is offline   Reply With Quote
Reply

Tags
combing, interlaced, vapoursynth, vivtc

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 01:58.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.