flickering led lights

michael Sheehan

Newbie Joined: Apr 10, 2015 01:53 Messages: 10 Offline

Solved by

Dec 08, 2015 00:15

Morning all

I have done some research and not sure if my issue is solvable but let me ask all the experts out there and see if I am wrong (hopefully I am)

I recenly fimed an onstage production and I have flickering lights on certain parts of the track.

I believe this is a shutter speed sync problem so i tried to set me shutter speed to many diff settings but nothing changed.

60fps is what I settled on and nothing but it did noy help.

I think the frequency of the lights seems to be the issue.

I have a short piece of the clip and If anuone can advise if this is fixable in post I really would appreciate it.

Michael

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Dec 08, 2015 00:55

The shutter speed and the frame rate are not necessarily the same. See this article for the required led drivers to have no flicker in the video: https://www.reddit.com/r/askscience/comments/1uf1eq/what_minimum_refresh_rate_does_an_led_light_need/ . A 30fps and 1/30 sec shutter speed may work better.

michael Sheehan

Newbie Joined: Apr 10, 2015 01:53 Messages: 10 Offline

Dec 08, 2015 01:37

Thanks for this Tomasc.
I went through a whole range of settings and 30th also did not work.
Have you ever been able to fix this kind of problem in post?

Myk

Senior Member Location: The Hartland of Michigan Joined: Feb 05, 2015 16:09 Messages: 205 Offline

Dec 08, 2015 21:21

How are the LEDs powered? A DC supply with little or no filtering will induce a 60hz flicker in the lights. Multiples of 60hz will pick that up. .
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michael Sheehan

Newbie Joined: Apr 10, 2015 01:53 Messages: 10 Offline

Dec 09, 2015 01:13

Thanks Myk
My issue right now is how or is it possible to fix it in post.
I have a possible solution to fix it if it happens again but I am sitting with footage and want to know if it's fixable?
Any right ideas..Lol
Thanks