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PostProduction -- Adobe After Effects.

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(@unconscious)
Posts: 10
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Topic starter
 

I have recorded some footage, of my garden. The sky is clearly visible.

If I wanted to make the sky red and dark -- how would I do so? I know how to replace skies on a cloudless day, however, England is pretty unreliable in the amount of clouds-per-day, so I'm afraid I'm going to be stuck with them.

Any idea how I could do this?

 
Posted : 23/07/2007 11:47 am
(@shrimphead)
Posts: 5
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Does the camera move in the footage, or is it perfectly still?

Don't judge me by my age, only by my talent.

Don't judge me by my age, only by my talent.

 
Posted : 23/07/2007 5:46 pm
(@unconscious)
Posts: 10
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Topic starter
 

quote:


Originally posted by Shrimphead

Does the camera move in the footage, or is it perfectly still?

Don't judge me by my age, only by my talent.


As of yet, it's quite still.. I am aware that Adobe After Effects has a 'jitter' system of some kind, so it doesn't matter either way, whether or not the camera is still.

My current plan is to film an area with nobody in it, stop filming, then get in the frame, and resume filming... However, it's more so the 'twinkle' effect I'm wondering how to do. I want a sparkle, or glow, as he teleports in. I'm oblivious as to how to do this.

 
Posted : 23/07/2007 5:52 pm
(@shrimphead)
Posts: 5
Active Member
 

You might be able to find a sort of lens flare effect or plug-in that you could superimpose on top of your subject. You could also go with a stock footage explosion that would have to be composited in. These can be found at www.detonationfilms.com. Some of their footage is free and some must be bought.

I could be wrong about this, but I do have a little experience with keying and compositing:
Because, as I understand from your description, the sky isn't an even blue for keying, you would have to matte it out manually. If the camera moves, or if the subject(s) block part of the sky, you may have to manually matte out the sky in each frame.

It would be helpful if you could post your footage or a freeze frame of it so I can see what it's like.
Don't judge me by my age, only by my talent.

Don't judge me by my age, only by my talent.

 
Posted : 23/07/2007 8:01 pm
(@unconscious)
Posts: 10
Active Member
Topic starter
 

quote:


Originally posted by Shrimphead

You might be able to find a sort of lens flare effect or plug-in that you could superimpose on top of your subject. You could also go with a stock footage explosion that would have to be composited in. These can be found at www.detonationfilms.com. Some of their footage is free and some must be bought.

I could be wrong about this, but I do have a little experience with keying and compositing:
Because, as I understand from your description, the sky isn't an even blue for keying, you would have to matte it out manually. If the camera moves, or if the subject(s) block part of the sky, you may have to manually matte out the sky in each frame.

It would be helpful if you could post your footage or a freeze frame of it so I can see what it's like.
Don't judge me by my age, only by my talent.


Whoops. I got what we were talking about confused.

--

The footage does not yet exist, unfortunately. I'm going to be filming it shortly, I posted this thread, in order to try and get an understanding on how I could replace the sky, when it is not completely clear.

 
Posted : 23/07/2007 9:53 pm
(@thehitmaker667)
Posts: 132
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(@unconscious)
Posts: 10
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Topic starter
 

quote:


Originally posted by thehitmaker667

http://www.videocopilot.net/videotutorials/advsky/index.htm


I've already looked at that tutorial -- that's replacing a cloudless sky. The method they used cannot be used in this instance, due to the sky being cloudy -- not plain.

Any ideas?

 
Posted : 24/07/2007 11:46 am
(@rjschwarz)
Posts: 1814
Noble Member
 

A lot depends upon the edge of the sky. The horizon. If you have trees and plants moving in the breeze or if you have houses that are still.

If you have houses that are still you can output a frame of the video and then in a photo program make a two color matte. One color would be exactly the size and shape of the sky. The other would be invisible or some other color that could be matted out seperately. THen you put this on as a layer ontop of the other layer, make the non-sky invisible and the sky will now appear in a single solid color. This can then act as a matte for a third layer of whatever you want.

RJSchwarz
San Diego, CA

RJSchwarz

 
Posted : 24/07/2007 2:15 pm
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