Question about doing rotoscoping in After Effects.

I

ironpony

Carbonite Member
I've watched tutorials but there are so many variables that aren't covered and I keep hitting road blocks. Are there any websites that cover all if not most of the variables?
 
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You can use the roto brush to save some time. The tutorials in the help section of AE will explain the workflow.
 
Okay thanks. I have gotten as far as the rotobrush and putting an actor in another shot. But everytime I do this when the actor moves he or she will all of a sudden partially disappear to put it simply. How do I make it so they can walk around the shot, without that happening?
 
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It's hard to get an idea of what you're talking about without seeing the actual shot. Any way you can post a sample?

I personally don't like the roto brush. I think it has a long way to go before it becomes an essential tool. For right now it's good for quick and rough fixes, but I still like doing most roto work the old fashioned way.
 
I only learned the rotobrush. Don't know how to do it the old fashioned way, unless you mean painting over the whole thing. I cannot upload my stuff, after it's been in after effects, and still figuring that out.

It's not the rotobrush that's the problem for me. After I rotoscope an actor out of the shot, it looks fine and moves fine, during playback. But then when I put him or her in the new shot, he will get cut off. Like if he extends his arm, his arm will get cut off once it goes a certain distance to the left for example or something like that. But played fine before I put him in the new one.
 
ironpony said:
Okay thanks. I have gotten as far as the rotobrush and putting an actor in another shot. But everytime I do this when the actor moves he or she will all of a sudden partially disappear to put it simply. How do I make it so they can walk around the shot, without that happening?
Click to expand...

AE roto isnt an effect you can apply and be all done with. Still need to step through frame by frame adding to or subtracting from and results vary.
 
For sure, thanks. I'll try to figure out more. How do I make it look good and get rid of all the chatter. The reduce chatter took away some, but there is still some there in some frames.
 
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Ok here is the old way in steps.
1. Track the object (or person) you want to roto. 2. Apply the trackdata to a null. 3. Create a solid and draw a mask around your object. 4. Parent the solid to the null. 5. Keyframe the shape of the mask. 6. Use the solid as alpha matte for he object.
 
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