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Filmmaker Help Files
QUESTION: I need to take footage of a subject against a pitch black background and create a luma matte from this. If I mess with the levels, I will always end up with a thin black line around whatever I am transferring into the finished matte. 

To answer the question you asked, use a matte choker, such as "Simple Choker", plus blur, and if needed, masks. Mocha can be very helpful here.

Read more: Black Screen and Gamma Blur

QUESTION: I really just wanted the red sweater and the picture frames to stand out, which is why I kept it so underexposed. I should have just done the underexposing in post. I tried using the Color Key plugin, but it's not working.

When you are capturing images that will require later work such as compositing, you want to capture with an eye toward maintaining detail, and minimizing noise.

Read more: Green & Blue Screen

QUESTION: I’m trying to achieve an effect similar to the recent Green Lantern movie, where the actor would be wearing a chroma key suit and I would then key it out and track the effect to it. Could a regular chroma key suit work? Would I need to place tracking markers of some sort on it?

Read more: Green Suits?

QUESTION: I have tried converting the movie but have I still get the frame skip every second...i cant seem to get the imagery converted to 24 fps correctly.

I've used AE to covert feature films shot at 25 fps to 24 with no problems.

History: back in the days before inexpensive 24P cameras, independent filmmakers would shoot in PAL DV, and then convert that 25 to 24 fps, and this would result in a *very* film-like look. In fact, the very first version of "Magic Bullet" was targeted at this specific task.

Read more: Converting 25fps to 24fps

QUESTION: When I play the two outputs side by side the 24fps is noticeably less smooth than the 30. 

This is probably related to your computer's monitor refresh rate. 

Read more: 24fps and Flicker

QUESTION: 4k 3840x2160 is only 2x more than 1080p, so it is really 2k?

Well first, the "4K" or "2K" refers to the horizontal resolution, not the vertical resolution. 

Read more: Why is 4K Less Than 4K

QUESTION: I have a shot of a person where I want to make a slow motion camera flash effect, just like in Cinderella Man when he's boxing in the ring. I tried to put a transition that dissolves to white with a camera flash sound, but it was flat and fake in appearance. 

There are a couple of ways to go about this. You can't just add an overall "whiteness" to the image as it will not take into account the geometry of any of the subjects relative to the light flash.

Read more: Relighting

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  1. Aerial Image
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