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Morten Schmidt
Fluorescent lights stripes
on May 7, 2012 at 10:58:40 am

I received a stack of video files shot on a Canon 5D, in 1080p, 25fps.
Its shot in a factory where there have been fluorescent lights in the ceiling, multiple times with different blink rate, so many of the recordings got this "wave" on the screen, dark stripes that rolls down the screen, like in the old days when we shoot a computer monitor.
Know it's a long shot, but there may be a filter that could alleviate this a bit?
Anyone??
Thanks



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John Pale
Re: Fluorescent lights stripes
on May 7, 2012 at 3:46:01 pm

Both Boris Continuum and Genarts Sapphire have plugins to deal with this. Unfortunately you have to buy the whole suite...however the trial versions are fully functional for limited time. You can download the trial versions and play with it...though they don't fix it in every instance.


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Morten Schmidt
Re: Fluorescent lights stripes
on May 7, 2012 at 4:06:18 pm

great thanks,
Can u tell me what the filters are called?
Found Flicker Fixer from Boris, is that the one u mean?
And at genarts, is it the plugin or the suite or ?
thanks



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Neil Patience
Re: Fluorescent lights stripes
on May 7, 2012 at 4:46:41 pm

Genarts Sapphire flicker remove is the thing to try on Sapphire
http://www.genarts.com/effects/sapphire#tabs-8

But as John says its sometimes tricky to totally remove this kind of thing.

I think the trial lasts 2 weeks so you can give it a shot. If you need any longer you can rent the FX too.

best wishes
Neil
http://www.patience.tv


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Morten Schmidt
Re: Fluorescent lights stripes
on May 7, 2012 at 5:28:26 pm

thanks again
know that I can never move it, but try to hide it a bit would be great, there is a limit for how fast one can edit to cover up, the client would like the picture to stand more than 1 sec each ;)



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Harry Bromley-Davenport
Re: Fluorescent lights stripes
on May 7, 2012 at 8:30:37 pm

Here is a post about this:

http://nofilmschool.com/2010/08/how-to-remove-horizontal-banding-artifacts-...

Best

Harry



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Morten Schmidt
Re: Fluorescent lights stripes
on May 7, 2012 at 9:12:12 pm

another way of thinking for sure, but does not works very well on this footage, all the stripes are dark, so if I try to limit the dark, thats a no go ..
the sapphire filter did not do the trick, Boris i got difficulties to find the right installer, but will defiantly give it a shot ;)



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Michael Gissing
Re: Fluorescent lights stripes
on May 7, 2012 at 10:33:09 pm

And don't forget to give feedback to the camera person about using the right shutter speed to avoid the flicker. Perhaps they will help pay for the plugins to fix their operator error.


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Harry Bromley-Davenport
Re: Fluorescent lights stripes
on May 7, 2012 at 11:12:15 pm

I managed to considerably reduce this black striping effect by crushing the blacks using the 3 Way Color Corrector. Try it - pull that black slider way down and the black stripes sorta get lost - at least partially.

Best

Harry.



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