Flickering effect from 3 way Color Corrector

[Rafael Amador]

Hi Gerard,
Had you put too many key-frames or too closed?.
rafael

http://www.nagavideo.com

[David Roth weiss]

It sounds as if your material isn’t full rendered. Go to Sequence>>Render All and make certain to put a check mark by everything in the list just as you see below, especially “Full.” Then perform Render All.

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.

[Gerard Gentil]

Hello Rafael,

Thank you for getting back to me so quickly. I don’t quite understand what you mean by too “closed”. That would be great if you could explain. Obviously the 3way Color Corrector is completely new to me so I also could have had too many Key-frames… I must be missing something.

Thanks for wanting to help,

Gerard

[Gerard Gentil]

Hello David,

Thank you for your prompt reply. After reading your message I checked the window that you mentioned and in fact the most important part, which you said was “Full”, was not checked. So I will re-render and let you know the result.

Thanks a lot for you help,

Gerard

[David Roth weiss]

[Gerard Gentil] “in fact the most important part, which you said was “Full”, was not checked.”

Of course, I knew that Gerard. All of us with pictures above are psychic you see. Rafael knows a lot about video, but he is just a calf and has yet to develop horns, so his psychic powers are not yet developed.

BTW, I also know that when you render your problems will go away… Besides being psychic you see, I can foretell the future as well.

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.

[Gerard Gentil]

Humm, very interesting David, since after rendering the problem still exists… Any more thoughts for my future?

[David Roth weiss]

[Gerard Gentil] “after rendering the problem still exists…”

Okay Gerard, let’s back up a little, I need some information.

1) How are you monitoring? On a computer monitor alone?

2) What type of video material are you working with? i.e. What codec/framerate

3) What type of hard drive setup do you have as your media drive?

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.

[Michael Gissing]

A lot depends on what you mean by flickering. Is it changes of luma level, chroma level or perhaps that ‘old chestnut’ field order problems.

Even super psychics like David need a better definition of the symptoms.

What Rafael was guessing was that you might have set a whole lot of keyframes close together and the flickering is FCP trying to change settings rapidly.

[Gerard Gentil]

Hi Michael,

Thanks for your input. Even though I don’t quite understand how that works yet, what you say makes sense. However, since I don’t know yet what I am doing I may have to start from scratch and re-do the entire correction by paying attention to the key-frames. In the meantime I will give to David the information that he needs to see if he finds a solution.

Thanks again…

[Gerard Gentil]

David,
Here are some answers:
1) I am using a Mac-Pro Lap-Top only.
Just so you know I already formatted the clip into a quick time file (thinking the flickering would go away, since FCP does a lot of things automatically on it’s own) and I also burnt a DVD in order to judge the final product.

2) I shot on Mini-DV Standard Definition at 29.97 FPS

3) I am using a LACIE 250 GB external Hard Drive

To explain the “flickering” problem better, it looks like there’s WIND BLOWING through a curtain backlit, from an over-exposed window in the background and in a flower, also backlit and over-exposed, attached to a girl’s hair in the foreground. The background was under-exposed, that is the reason why I use the 3way corrector to balance the exposure with the previous shots.

I hope this will help.