I recollect but cannot locate there was previous discussion using stacking video plus frame shift, even using up to 3 rows.

Adding noise. Neat video may be of use.

Link below discusses issue.

https://www.reddit.com/r/videography/comments/18uiaex/id_like_to_remove_this_rolling_band_caused_by

@Sandhill_Films Hi, can you provide a small sample video on Google Drive?.

I can put one together but mainly it is thin blackish lines running up the footage

Yes you have plugins that removes flicker and rolling bands quite well, but be aware, it can be a time consuming rendering process no matter which solution you choose. My tool of choice for this is always Digital Anarchy Flicker Free.

However the other solutions are RevisionFX DeFlicker, BorisFX BCC Flicker Fixer and the newest version of Absoft Neat Video.

The way to avoid this in the future is to set your shutter at 1/60, and not 59.94 or 29.97 NTSC,

The way to avoid this in the future is to set your shutter at 1/60, and not 59.94 or 29.97 NTSC,

Is that possible? Isn't 1/60 a shutter speed and 59.94 or 29.97 framerates? Or do NTSC cameras have shutter speeds that can be set to, or automatically choose, the exact speed to match a framerate?

Most cameras don't have such precise control of shutterspeed and the exact one you need depends on the frequency of the electric grid where you are (it's 50hz where I live).

Some advice from Sony here: https://www.sony.com/electronics/support/articles/00122281

I am curious to know how the VEGAS Flicker Control plugin would work for this case. If it is deficient, we would like to know so we can improve it.

Never knew it existed.

@EricLNZ

29.970 NTSC Frame Rate vs. 60 hZ traffic lights in North America.

@EricLNZ

29.970 NTSC Frame Rate vs. 60 hZ traffic lights in North America.

@mark-y I don't see any banding in that video? What are you trying to show us?

Look at the red led traffic lights in BFO against half-wave rectification, with the 29.97 shutter frequency.

With full-wave stage lighting, and 59.940 shutter speed, the oscillation base frequency is 4x faster making the flicker frequency 8x faster. I have other examples with professional stage lighting, but this may help your understanding of our very weird frequency standards.

60hZ is also a huge problem for orchestra tuning, since 480hZ third-overtone buzz from overhead lighting creates an out-of-phase situation just north of Bb' with stringed instruments who tune to A440, the international standard.

My professional career would have been simplified greatly if the US had simply adopted 50 hZ, or even 80 hZ, which stays neatly out of the way in the natural overtone series of both light and sound. @EricLNZ

The way to avoid this in the future is to set your shutter at 1/60, and not 59.94 or 29.97 NTSC,

Thats the problem. It was set to 4K 60p. I even tried to go down to 1/30th which did help a little. It was the worst we've ever dealt with.

I am curious to know how the VEGAS Flicker Control plugin would work for this case. If it is deficient, we would like to know so we can improve it.

 

I tried it but it did not work. I have used it for little lights in the background of our footage and it did okay for that. But not for rolling bands going up thru the footage.

@Sandhill_Films

You need to be very careful with North American terminology, which is pretty imprecise.

In NTSC countries, 60p = 59.940

30p in the US = 29.970 as I illustrated in my video. The camera says 30, the shutter is 30 x 1000/1001, exactly.

So a shutter speed of 30.000 actual, or 60.000 actual,  will not show flickering, except by a small factor that is introduced by your camera clock; they haven't actually synced to line frequency for several decades. Hope you find this helpful.