Removing weird lines over a lot of the video?

[killerteengohan]

I have a source where I am noticing what looks like halo's, but it's not against the lines like usual. Almost as if its a double image of some kind.

Whats up with this and can I get rid of them?

Screenshots

https://forum.videohelp.com/images/imgfiles/ngzgdjy.png
https://forum.videohelp.com/images/imgfiles/Sk4gxZz.png
https://forum.videohelp.com/images/imgfiles/iiw3ei1.png
https://forum.videohelp.com/images/imgfiles/NaAGvtD.png

[pandy]

Looks like post-ringing (common for IIR filters) - perhaps something is wrong in analog domain? Cable connection? Or poor resizer? Probably best idea is to deconvolve (in luminance plane) - would try to: perform edge detection (Laplacian, Sobel, Canny?), remove all except ringing, invert luma channel, combine both (perhaps with some weight). Eventually blur everything except edges.

[killerteengohan]

It's raw playback video from a DVD, there are no cables involved, and it has not been filtered in the screenshots.

I have no idea how I would go about doing all of what you just suggested using avisynth.

[SaurusX]

Avisynth has a filter called finedehalo that will alleviate some of that.

[killerteengohan]

Unfortunately dehalo filters are not removing it for me. I have tried multiple of them. It barely reduces it, but really softens the picture in the process. Dehaloing was actually the first thing I tried in order to get rid of it before I even asked on here.

[SaurusX]

In that case, check out this thread at doom9: https://forum.doom9.org/showthread.php?t=140623

[JVRaines]

That's a ringing artifact and it looks like a DVD production error to me. It's typical of composite output from a U-matic videocassette deck.

[pandy]

It's raw playback video from a DVD, there are no cables involved, and it has not been filtered in the screenshots.

I have no idea how I would go about doing all of what you just suggested using avisynth.

Extract Y, perform edge detection (http://avisynth.nl/index.php/GeneralConvolution), subtract real edge to left only ringing, invert ringing and blend with source to nullify ringing without affecting real edge (mask may be helpful). Your goal is to perform inverted process to one that created ringing...

[SaurusX]

It's raw playback video from a DVD, there are no cables involved, and it has not been filtered in the screenshots.

I have no idea how I would go about doing all of what you just suggested using avisynth.

Extract Y, perform edge detection (http://avisynth.nl/index.php/GeneralConvolution), subtract real edge to left only ringing, invert ringing and blend with source to nullify ringing without affecting real edge (mask may be helpful). Your goal is to perform inverted process to one that created ringing...

I hate to say it, but your theoreticals aren't really helping. Telling someone what to do without them knowing how is pointless. Do you have even a pseudo-script?

[pandy]

I hate to say it, but your theoreticals aren't really helping. Telling someone what to do without them knowing how is pointless. Do you have even a pseudo-script?

Then sorry - i've made wrong assumption.

[Selur]

side note: sharing a small sample (of the source) which shows the problem instead of just some screenshots might motivate folks to share more than general theoretic approaches,...

[killerteengohan]

I just remembered I had a source with this kind of problem several years ago and it was the first and only other time time I ever seen it. I went looking for the thread I asked about it in and this is what was suggested to me.

https://forum.videohelp.com/threads/366394-Video-showing-weird-double-imaging-lines

It seems to help quite a bit, but a lot of things gets softened and or smudged out. I still cant get it to work with src in it, but it works without it.

[SaurusX]

It seems to help quite a bit, but a lot of things gets softened and or smudged out. I still cant get it to work with src in it, but it works without it.

"src" is just a variable that you're declaring right after your source (src) filter. Something like this:

MPEG2SOURCE(...)
src=last

[JVRaines]

It's raw playback video from a DVD, there are no cables involved, and it has not been filtered in the screenshots.

I have no idea how I would go about doing all of what you just suggested using avisynth.

Extract Y, perform edge detection (http://avisynth.nl/index.php/GeneralConvolution), subtract real edge to left only ringing, invert ringing and blend with source to nullify ringing without affecting real edge (mask may be helpful). Your goal is to perform inverted process to one that created ringing...

I hate to say it, but your theoreticals aren't really helping. Telling someone what to do without them knowing how is pointless. Do you have even a pseudo-script?

A smart and motivated user will click the link, read about convolution, then search for such things as "subtract," "invert," "blend," and "mask." Some of us just don't work for free unless we find the problem especially intriguing.