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Repair flicker bands on DSLR footage
Before I start, I’m aware that this problem has been posted a few times before, that there isn’t an easy fix and that it’s best to reshoot. I have no option of reshooting and am happy to spend a bitter time trying for a solution, however partial. Any comments on my attempts so far would be greatly appreciated!
So the problem is horizontal lines of flicker resulting from a clash between shutter speed and lighting frequency. In this case I tried changing shutter speed but flicker persisted. I didn’t try changing the frame rate from 25 to 24 and am not sure if this would’ve helped.
Here’s a sample of footage:
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So it first looked to me like undulating lines of darkness and brightness. So I made a gradient mask and key-framed it to the movement of the flicker bands.
Here’s the gradient mask:
I then tried using the mask as a luma matte for an adjustment layer. So far I’ve tried changing the brightness, but it looks to be more than that.
Does anyone have a better idea of the way the bands change the “original” image? And am I completely barking up the wrong tree or wasting my time? I’ve not had that much experience with grading but have access to Colorista if that helps.
Many thanks!
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2 Replies
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Any takers with ideas for this?
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Jack I have experienced this too but it has been periodic and thank god not at crucial shoots – No answer yet but I am going to look into it now.
Jonathan Lawrence
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