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Super thick interlacing lines

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Jeff Bugbee
Super thick interlacing lines
on Jul 11, 2019 at 4:10:29 am

Anyone ever seen this before? I've got this old footage, it appears to conform to the WWSSS interlacing, but the lines are SUPER thick, not like the usual very fine interlacing lines. I'm unable to do anything to get rid of this. Anyone ever seen anything like this?

<img src="https://i.imgur.com/PRwwTDh.jpg" />


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Shane Ross
Re: Super thick interlacing lines
on Jul 11, 2019 at 5:02:19 pm

is the footage interlaced? Meaning, is it reporting that it's 1080i? Or is it progressive with that interlacing built in? I've come across that TOO DAMN MUCH in my work on archival docs.

OR...are you trying to use interlaced footage in a progressive sequence? IN which case, you need to de-interlace it.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Jeff Bugbee
Re: Super thick interlacing lines
on Jul 11, 2019 at 5:09:23 pm

This footage is progressive but was likely (incorrectly) captured from an interlaced source.
When I attempt to deinterlace this, the scanlines are tiny compared to these huge scanlines.

Just noticed my original post didn't correctly link the image, trying again here:


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Shane Ross
Re: Super thick interlacing lines
on Jul 11, 2019 at 9:56:55 pm

If it's progressive, that means that it was incorrectly captured. If you captured, then recapture as interlaced. If you licensed it, or obtained it via third party, ask them to re-capture or re-encode it properly.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Jeff Bugbee
Re: Super thick interlacing lines
on Jul 11, 2019 at 9:58:53 pm

Unfortunately this is the only copy available. Still wondering how the interlacing lines are so huge.


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Pat Horridge
Re: Super thick interlacing lines
on Jul 12, 2019 at 6:42:43 am

If interlaced footage is ingested into a progressive Raster without de interlacing and scaled the field differences clump up giving fat lines. At that stage it's impossible to de interlace.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online http://vimeo.com/channels/752951
pat@vet.co.uk



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John Pale
Re: Super thick interlacing lines
on Jul 12, 2019 at 12:32:16 pm

The organization I currently work for has a large amount of archival footage in its system that was captured improperly and has this issue. Hopefully, they still have the tapes in a vault somewhere, as I’ve been informed that the cost of recapture is too great to undertake at this time.

Usually you can minimize the problem in Premiere by right clicking on the clip in the sequence and selecting Field Options/Flicker Removal. This results in a slightly softer image, but a lot more usable.


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Chris Wright
Re: Super thick interlacing lines
on Jul 14, 2019 at 12:45:05 am

see Lift Gamma Gain's post
https://www.liftgammagain.com/forum/index.php?threads/can-you-deinterlace-u...


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