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kelly armstrong
black screen question
on Sep 16, 2012 at 2:50:11 pm

Hello,

I have to re-edit a music video however the footage reveals that the singer is in front of a black screen.

The client wants outer-space to be composited behind her but i've never worked with black screen before and am completely unsure on what to do.


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Rafael Amador
Re: black screen question
on Sep 16, 2012 at 3:06:52 pm

[kelly armstrong] "I have to re-edit a music video however the footage reveals that the singer is in front of a black screen.

The client wants outer-space to be composited behind her but i've never worked with black screen before and am completely unsure on what to do."

Black screen or has already been keyed an Alpha channel?
Which codec is the footage?
Anyway, put some picture on layer 1 and the video in layer 2. See if has transparence.
rafael

http://www.nagavideo.com


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Hariharan Swaminathan
Re: black screen question
on Sep 16, 2012 at 3:10:19 pm

You really don't have to be an expert to work with chroma key as long as footage has a background with clean flat lighting. It should be either green or blue. The reason for that is, usually subject's costume will not have those colors on them so software won't take portion of it.

So I don't believe in just green or blue. Black should be fine, but pls make sure you dont' key out any part of the singer if she happens to have black color in her dress.

If that happens to be the case, you need to mask her first and then start keying. It's a very tedious job since this is a music video i assume the motion will be lot. Motion tracking requires lot of keyframes.

If all is ruled out, keyout is just a matter of clicking and a little bit of color tweaking to fine tune it. In final cut pro you can use chroma keyer, or dv matte etc plugins. There are many out there.

If you have after effects it has a inbuilt plugin which is pretty straight forward and do a wonderful job.

Here is a video for final cut keyout:





I did one myself recently for my company. I did this with home depot lights and it worked very well. Here is the link if incase you might be interested


| Hariharan Swaminathan |
photographer | film maker
http://www.filmmaker.me
http://www.vimeo.com/ihariharan
http://www.youtube.com/ihariharan


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