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Cutting Off Limbs [ANSWER]

Posted: Mon, 29th Oct 2007, 11:47pm

Post 1 of 9

codyburke610

Force: 400 | Joined: 19th Oct 2007 | Posts: 11

CompositeLab Pro User

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I finally received my copy of CompositeLab pro and I've been working on the Cutting Off Limbs tutorial, but I have been having a few problems. Here is what I did.

Imported my footage in and put the background footage on the bottom and acting on the top. Then where I wanted the head to be cut off I clicked on the mask track on the acting footage and drew a mask around the head at that exact frame whrre I want to the head to pop off. Then I animated the mask on pretty much every frame until I fell on the ground and you couldn't see my face anymore. Then I copied the acting track and pasted it above the first acting track. Then I clicked on the crop tool (is that what its called) and from the begnning of the new copy of the acting track I dragged it to the frame where I first drew the mask for where I want my heas to pop off at. After that I deleted the mask on the new copy of the acting footage, and then I created a garbage matte at the very beginning of that footage becuase I dragged it to where my head is suppose to pop off at.

This is where I got a little confused. It says to animate the garbage matte so that it follows the heads exact movements. Choose a length of the head-animation and animate it all the way to that frame where you crop the shot to end.

I didn't click on the animate tab when I did this but I clicked in the middle of the garbage matte that I created and dragged it at each frame to create a new keyframe same as I did with the mask earlier and I kept on fixing the shape of the garbage matte until the very end where I fell down and you couldn't see my head anymore.

I basically animated the garbage matte the same exact way I did the mask.

But then once it comes time to animate the head flying off becuase we seperated the head from the body I get lost. Becuase when Ic lick on the animate tab in the new copy of the acting footage it doesn't put like a canvas quad going just around the head so that I can move the head and make it fly off. It just puts a quad around the whole clip. And I can't see how I would make the head fly off if I animated the mask and the garbage matte following the head to where you can't even see it anymore.

Please help, am I doing something wrong?
-Cody-
Posted: Tue, 30th Oct 2007, 12:41am

Post 2 of 9

Rockfilmers

Force: 2182 | Joined: 10th May 2007 | Posts: 1376

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Rating: -2

It soulds to me you over complicated things.
Posted: Tue, 30th Oct 2007, 12:52am

Post 3 of 9

SGB

Force: 2199 | Joined: 9th Aug 2005 | Posts: 855

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Rockfilmers - why post that? He's not overcomplicating things.

Your first mistake was not clicking the animate tab. Also, you need to click "invert mask" in teh garbage matte.

See if that helps.
Posted: Tue, 30th Oct 2007, 10:33am

Post 4 of 9

codyburke610

Force: 400 | Joined: 19th Oct 2007 | Posts: 11

CompositeLab Pro User

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Thanks SGB, I followed what you said and it worked, I seperated the my head from my body, but what happens is at the frame where I want my head to pop of at I basically just walk into the mask on the first footage of the acting, and my hea disapperas for about 2 frames until the mask fully covers my head. Then on that frame I can animate the garbage matte to move my head where ever but when I go ahead a few frames to animate it some more it moves down to where the mask is at, at that frame,a nd then it just cuts off some of my head.

Hope this didn't sound to complicated, and thanks for the help.
-Cody-
Posted: Wed, 31st Oct 2007, 1:53pm

Post 5 of 9

SGB

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Codyburkes, i'm not totally sure what you mean.

I think you said that as the actor walks towards the area in the canvas where the mask is, his head slowly dissapears and the mask "slides" over his head. One way to solve this is to make a keyframe on the first frame you want the head to be gone (just clicking on the center of the mask should do it), and then on the frame before that, move the mask off the canvas.
Posted: Fri, 2nd Nov 2007, 7:11pm

Post 6 of 9

codyburke610

Force: 400 | Joined: 19th Oct 2007 | Posts: 11

CompositeLab Pro User

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SGB, here is a test render I just made for you to look at and maybe get a better understanding of what is wrong. As you can see I basically walk into the mask and then my head re-appears. Do you know what I am doing wrong? Thanks for the help
-Cody-
http://youtube.com/watch?v=YtPC7YS8WWE
Posted: Sun, 4th Nov 2007, 3:50am

Post 7 of 9

SGB

Force: 2199 | Joined: 9th Aug 2005 | Posts: 855

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looks to me like the only problem is that you walk into the mask, as opposed to the mask appearing when you need it.

Go to the frame of video when you want the head to be covered by the mask. Click on the center of the mask to make a new keyframe placing the mask there. Now, got to the frame before it and move the mask off the canvas.

I'm not sure how this works in terms of keyframing, but you also could try going to the frame before and jsut change the mask type to "opaque" as opposed to transparent.
Posted: Tue, 6th Nov 2007, 1:14am

Post 8 of 9

codyburke610

Force: 400 | Joined: 19th Oct 2007 | Posts: 11

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Thanks SGB I got it to work thanks to you. Here is the link...
http://www.youtube.com/watch?v=GDowY50vPRI
-Cody-
Posted: Tue, 6th Nov 2007, 3:17am

Post 9 of 9

SGB

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Good job codyburke.

I'm glad it worked out.

SGB