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 > Capturing Video

Reply
 
Thread Tools Search this Thread Display Modes
Old 13th July 2022, 08:57   #1  |  Link
jefix
Simple User
 
jefix's Avatar
 
Join Date: Jul 2022
Posts: 5
Removing analog artifacts from video

Hi. Is there a software or hardware way to get rid of these artifacts?


The problem doesn't seem to be with the capture card. I think the signal is already encoded that way on the laser disk.

I've tried googling but can't find anything.

This problem shows up the most during the intro like in the picture. I already feel like I have to recreate these segments of video from scratch.

Last edited by jefix; 13th July 2022 at 10:27.
jefix is offline   Reply With Quote
Old 13th July 2022, 10:21   #2  |  Link
StainlessS
HeartlessS Usurer
 
StainlessS's Avatar
 
Join Date: Dec 2009
Location: Over the rainbow
Posts: 10,980
Post on Postimage.org, attachments can take forever.

"How To Upload Pictures":- https://forum.doom9.org/showthread.php?t=183538
__________________
I sometimes post sober.
StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace

"Some infinities are bigger than other infinities", but how many of them are infinitely bigger ???
StainlessS is offline   Reply With Quote
Old 13th July 2022, 19:45   #3  |  Link
Emulgator
Big Bit Savings Now !
 
Emulgator's Avatar
 
Join Date: Feb 2007
Location: close to the wall
Posts: 1,531
Convolution can be used to get rid of these echoes/ghosts/halos, lots of manual tuning involved.
https://forum.doom9.org/showthread.php?t=182604
__________________
"To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain)
"Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..."

Last edited by Emulgator; 13th July 2022 at 19:48.
Emulgator is offline   Reply With Quote
Old 14th July 2022, 05:32   #4  |  Link
jefix
Simple User
 
jefix's Avatar
 
Join Date: Jul 2022
Posts: 5
Quote:
Originally Posted by Emulgator View Post
Convolution can be used to get rid of these echoes/ghosts/halos, lots of manual tuning involved.
https://forum.doom9.org/showthread.php?t=182604
Thank you! Can you tell me what analog source you used this for? Should I do noise reduction and de-interlace first? Is there any chance that if I set up this script for one laserdisc, it will work for most?
jefix is offline   Reply With Quote
Old 14th July 2022, 17:33   #5  |  Link
Emulgator
Big Bit Savings Now !
 
Emulgator's Avatar
 
Join Date: Feb 2007
Location: close to the wall
Posts: 1,531
All is laid down in great detail within the script.
(I wrote it in German, and you may use a translation machine for that.)
It was for a crappy VHS capture 3rd generation, so you can not copy coefficients from that occasion.
Restoration sequence: Undo any faults in reverse order as they were introduced.
Think about your particular case's original signal chain and you'll find out.
First processing should work along CVBS temporal scan, so along x-axis from left to right and then to the next line, so I would call deghosting first.
Then deinterlacing (QTGMC) and if still needed, then noise reduction and whatever you may consider helpful.
__________________
"To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain)
"Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..."

Last edited by Emulgator; 14th July 2022 at 17:38.
Emulgator is offline   Reply With Quote
Old 19th July 2022, 16:09   #6  |  Link
SaurusX
Registered User
 
Join Date: Feb 2017
Posts: 134
Edgesidebleed() can reduce that horizontal smearing. You just need to tweak the parameters depending on how far the streaks are extending and how intense they are. You can't get it perfect, but it will be greatly improved.

https://raw.githubusercontent.com/re...Denoising.avsi
SaurusX is offline   Reply With Quote
Old 20th July 2022, 06:55   #7  |  Link
jefix
Simple User
 
jefix's Avatar
 
Join Date: Jul 2022
Posts: 5
SaurusX, thank you so much! I will definitely try it out.
jefix is offline   Reply With Quote
Reply

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 10:42.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.