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If you have watched the tutorial on applying motion and keyframes to still images, the so-called Ken Burns Effect, you will notice that the images moved in kind of a linear fashion. They just started and stopped, they moved along a straight line and it just didn't have that kind of realistic feel that you want to have, any kind of motion in your projects to have. Well, you can fix that by using what's called a Bezier curve. So if you want to follow along in this tutorial, open up 08-bezier, and when you do that you will see two clips. This clip here, which has the basic motion that was applied that I demonstrated earlier in that m otion and keyframes tutorials, and the second clip has Bezier Curves applied to it.
So let's take a look at the first clip and watch the action there. Settles down for a second, moves linearly, stops, and then zooms out on a linear basis. That's not horrible. It looks pretty darn nice and I think people would be happy with that, but you can apply some subtle changes to it to kind of ease out, ease in to each of these moves. So let's take a look at this clip and see how that works. Gradually, ease out, gradually ease in and then gradually zoom back. You will notice that as it pulled back, it kind of a little swooped to it as it came back. That is because I applied Bezier curve to it. Let me just give you a little sense of how that looks inside the effects. So I can select this clip, go to Edit > Effects, Edit Effects, open up Motion and you will see that all those keyframes look kind of funny and they are no longer little diamonds; they are hourglasses.
That's because I changed the standard keyframe. The keyframe indicates the property, but when I changed the keyframe action to the apply Bezier curve to it, it changes it into the hourglass. There are some other icons that will change too depending on the Bezier curve that you select, but it won't be a diamond. So let me go back over here and we will take a look at how we do that. Select the clip and now we've got Motion open and here are all those keyframes that you would expect to see. The beginning, it starts the things right there, nothing changes to there and then it starts changing to this one, holds for a while and then changes along there. I want to change the way things ease out from these keyframes here and ease in to those keyframes there, to let that movement be a little more natural.
So I right-click on a keyframe and I have two choices: Temporal Interpolation or Spatial Interpolation. I can apply them to both, but we will do Temporal Interpolation, because that has the Ease In and Ease Out. We could choose these various Bezier options, but they are a little bit higher level and they give you little handles, literally little handles that you can grab inside the Monitor to adjust the shape of the curve and I think that's probably a little beyond the scope of these tutorials. So we will stick with just the Ease In and Ease Out applications. So here we are easing out of the keyframes, so let's click that. We will click this click keyframe down here, right-click on it. Since this is a scale as opposed to moving something, it already gives you the Ease Out, it's one of the options right here in the menu. Click that.
So now we are going to ease out of this particular keyframe. Let's see what happens. Move back a little bit and go. See how gradually it went out. But this time it's going to boom! It kind of just abruptly gets to the next keyframe. So we will go to these keyframes. We will right-click on them and we are going to do again Temporal Interpolation > Ease In. Interpolation here and go Ease In. So now when it goes between those guys, it will gradually ease out, it will speed up a little bit and then it will slow down as it gets to the next keyframe. Let's watch. Eases out, eases in. And we can do that kind of interpolation to the other keyframes too. We are going to ease out of these and ease into these guys.
So that's basically how you make your motion a little bit more realistic, a little more human. So now you know how to apply keyframes to add motion and then to make that motion a little more realistic. So you can make some really great slideshows with some of your photos.
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