Making garbage mattes

Now that we've got a basic keephold,…it's time to take a look at doing some garbage matting.…So, our character kinda walks into this part of the picture…which doesn't have a green screen…which happens all the time.…Plus, if I switch the viewer to the alpha channel,…we've got extraneous stuff out here…we wanna garbage matte out.…So, let's select the prime map mode and attach a roto node.…I'll switch the display to the viewer full frame…and we'll select our vizia…I'm picking the most complicated frame,…maybe this one here for example,…and we'll the start the roto there.…

I'll click here... (mouse clicks)..…and close.…I'm actually going to watch this through the RTB channels.…Let's do a little bit of a tidy-up here.…Ok then we'll jump to the first frame…and I'll select all my rotos and bring it over here,…maybe scale it down a little bit,…and we'll start smoothing things out,…(mouse clicks)…and bring in a couple of points like that.…

I'll select these and type Z to…give me a smooth treatment there.…Ok a little more room for the hand,…