Red banding in highlights

Hey guys,

I remaster a lot of old concert videos and I run across this all the time. There's this weird banding in the highlights (I've noticed this usually when the venue's lights are red). I'm using Davinci Resolve Studio (still a beginner) and I've tried every adjustment that I can think of and I can't seem to find that that doesn't affect the rest of the image as well. I've also tried a bunch of different deinterlacers to see if one of them will correct this, but no dice. I'm trying to avoid going frame by frame to correct this. Is there any trick I should try to make this as painless as possible?

IMAGE SAMPLE


VIDEO SAMPLE = https://i.imgur.com/aMNJhKa.mp4

Bumpity bump.

Can anyone please help?

If you've tried deinterlacing without success it would suggest that it is interference between the red lights and camera sensor, or if old footage, camera tubes. In this case it is burnt into the footage and there is no easy way of removing it.

Post a short sample to a cloud service.

I also think there's some really bad de-interlace problems: if you look at the mic stand by the drummer, it's stairstepping like crazy. That would drive crazy compared to the Y/C offset problem you're seeing.

And that's my diagnosis: I think this is like a VHS kind of thing where the color signal is slightly offset from the luminence, so you're getting some ugly edges in hot chroma situations.

There are companies that can and will do restoration from standard-def tapes like this, but they are not cheap and there's always a "garbage in/garbage out" factor. My suggestion would be to upload it to Topaz Video AI and see what it does. Play with the settings and maybe it can get some of this under control.

To me that looks like a de-interlacing problem in the super whites with some channels clipped.

What is the exact workflow here? An which version of Resolve?

Can we get a sample of the untreated original footage to test?