Video Flickers

C

Colin Coyne

Member
Hello I was told to make a new thread. So my problem is I filmed this in squeeze mod then brought it into a 24p timeline on widescreen. The image flickers every 5th frame. I tried to remove the pulldown and it didn't do anything. I even tried this in a 29.97 timeline, same thing. Someone please help me out, thank you. In the video clip watch the second shot, the tv stand flickers so bad. Could it be because I had my shutter at 1/48?

http://www.powow.com/vanfooty/done.mov
 
It has nothing to do with shutter and everything to do with fields. What NLE are you using and what mode did you shoot in: 24p Normal or Advanced? It doesn't seem to be properly detecting and removing the interlacing.
 
I didn't see any flickering, as in brightness. Did you mean maybe a little jumpiness in the motion?

If you mean brightness, and you shot in fluorescent light, it's possible it could be a sync issue -- fluorescents flicker at 60 Hz, and at 24P the camera is shooting at 24 Hz, which is a 2.5:1 ratio, and of course 2.5 is half of five. I'm stretching here, but I've seen odd things with fluorescent light and motion or still images on film.

Dave

Adding more here after the first post. If in fact it's due to fluorescent lighting, you obviously wouldn't see the flickering every 2.5 frames, but it could show up every five frames (fraction vs. whole number). Still, just a theory.
 
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Colin Coyne said:
I don't know what NLE is.
Click to expand...

NLE = Non Linear Editing System. (final cut, vegas, premiere, etc)

He's on Premiere. Colin, as I stated in the other thread... is it happening IN the timeline, or just when you export?
 
It happens in the timeline and when I export it. I could try it on a mac and see what I get. Could it be my squeeze mod that I am using?
 
What version of Premiere? Premiere 1.0 handled 24p differently than 1.5 which handled it differently than 2.0.

What you're seeing is most likely one of two things:

Footage on a 24p timeline where the pulldown isn't removed, so it's being displayed as a 60i clip.

Or

24p footage, pulldown not removed, on a 60i timeline.

Every fifth frame would be hitting the judder frame in 24pA footage where the pulldown isn't removed.

To view it properly, you need to remove pulldown properly and view it on a 24p timeline. How you do that depends on your version of Premiere.
 
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