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So now in this video, we are going to combine the different shape keys into an animation using our Breathe and our A shape keys. So I have modified the Desktop layer a little bit to give us a little bit more room to work with the IPO window. As we play the video, we can see that she starts to say "A" right around frame 70. We don't want to leave her in that particular position. So now, right here, what we want to do is select the A shape, and the A shape starts out with the 0 influence right around here.
So I'm just going to Ctrl+Left-Click in the IPO window, and that inserts the key. The other way to insert a key is just by moving this slider, and every time you move this slider on this frame, the Shape Key influence at that frame is set. So then as we move our Arrow key or where we use the Right Arrow key, she comes to the full A shape right around here, around frame let's say 91. So now we can slide the Influence slider for that A Shape Key all the way over, and then that sets the A here.
So now our character goes from no influence on the A shape, all the way up to full right here. Now she closes her mouth right to there, so we are going to go ahead and slide the slider back down again. So now we have our virtual character matching the human in terms of timing for when they say the A. Now the breathing has to be coordinated, because you need breath in order to say A, and you can't say A while you are breathing in.
So we want a fully expanded chest right around here. So we are going to select this Breathe channel, and I'm just going to go ahead and Ctrl-click on one right here. And now this Breathe is fully influencing our shape, and normal breathing you take about one breath every three seconds. That takes about one second breathe in, one second to breathe out, and then you have like a one second rest in between. So we are going to backup by 30 frames by pressing the Down Arrow three times, and then wherever the green bar is intersecting to the 0, we just go ahead and click.
Now our character breathes in, and then start saying the A shape. And I'm going to go ahead and Shift- click on A so we can see both of those curves, and we can see how they interact. And then finally, he is going to have to breathe out as he says the A. So I'm going to make sure that my Breathe channel is selected. You can go ahead and then you click down there, and so now he breathes out slowly as he says A. That's how you combine and use multiple shape keys together to provide an overall convincing both facial and shape key animation.
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