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Imagine that you'd like to start with a shot in real time, then speed it up significantly, then slow it down all the way to a stop, or freeze frame, and then go and reverse. Well, the Motion Effect Editor and Freeze Frame creation tool from the last movie can only produce non-variable motion, but Media Composer's Timewarp effect allows you to vary the speed however you like. So in this lesson we'll take a look at the basic functions of the Timewarp effect so that you can produce some interesting variable-motion shots. So we have our dancers here and we want them to go through their dance at variable motions, so we're going to go ahead and go into the Effect palette and in the Timewarp category we're going to apple the Timewarp effect.
I'm going to click on the Effect mode button to open up the Effect Editor, and as you see here, I have a Speed graph and a Position graph. Now yours may open looking like this, with everything compact, so if you need to open those, just click on each of these graphs and you've got everything you need. Now one thing I do recommend is to use these scale bars to make sure you get the entire graph in your view.
So I'm going to just reposition these so that I can see the entirety of my Position graph. That's going to help me out a lot. And you can do the same thing here if you plan to go at super-high speeds, but for now this looks okay. So I'm going to work in my Position graph to create my variable motion, and then I'm going to look in the Position graph to make sure I have enough frames to get the job done. So I have 100% speed here. I'm going to apply several keyframes.
Let's say from about the beginning of the clip to a quarter of the way in, I want to increase my speed, and then about halfway through I'd like to drop it to a freeze frame, which will hold for a little while, and then at the very end I want to go in reverse motion. So here's planning it out. Let's actually do it now. I'm going to click on my second keyframe here, and I can either drag it up or I can come in here and type a value, let's say 300%.
I'll type 300 and Enter, and let's go on to my next keyframe. I can use my fast-forward button here. And here we want to go to a freeze frame, so I'm just going to type in 0 and again on this one type 0, and then on my last keyframe let's go ahead to -150. So that'll go in reverse motion one-a-half speed. So we're increasing speed, we are staying still, then we're going in reverse.
Now by default I'm in Spline, which means I have a nice S curve in between each of my keyframes. If I right-click on a keyframe, I have other options that I can choose from. If I choose Shelf that means that I'm going from one value to another without any ease-in or ease-out. I can also choose Linear, and I can choose Bezier, and this gives me direction handles on each one of my keyframes so that I can customize my ease-in and ease-out.
Let's leave it on Spline, and I want to come down here into the timeline and take a look at this right here. I have a blue-dot effect, which means that I need to render it. Most Timewarp effects are green dot which don't need to be rendered, but I'm going in reverse motion here so I am going to need to render it. So let's take at a look at our Render Method menu. Again, we do want to choose something that produces a nice smooth result, so I would recommend Blended Interpolated. I'll go ahead and choose that. And now we'll go ahead and render this out.
Click on the Render Effect button. I'll send it to my Data drive, and we'll press OK. It takes just a little bit of time, and then we'll go ahead and play it out. Notice that my blue dot goes away because it's rendered, and I'll close this, and let's play through. Speeds up, here's our freeze frame, and backwards. Exactly what we wanted. Not a very practical example, but it gets the idea across about how to use the tool.
So I'm going to open up my Effect Editor again, and I want to draw your attention over here to the Position graph. Notice that my line went out the right side of the graph. This means I have enough frames to work with. If, however, I go in super-fast motion and burn through all of my frames, this line is going to go out the top, which is going to tell me, hey, you don't have enough frames, you're going to result in a freeze frame here. You might want to do something about that. So let's just simulate that. I'm going to come over and click on these keyframes and press Delete and as they're highlighted, I can just keep pressing Delete.
So I'm going from 100% to 300%. Let's use our Scale bar and access some really high speeds here. I'm going to just send this up to over 1200%. Notice that my line is now going out the top. So it's saying, hey, you don't have enough frames. But let's go ahead and try this. Notice that I do have a blue-dot effect, because I'm going at a super-high speed. So again I want to make sure that I'm rendering with Blended Interpolated Render Method, and we'll go ahead and render this out.
Send it to my Data drive. Again, we've produced two kind of extreme examples. Most of the time you don't need to render Timewarp effects. Close this out, and let's play through. This should go pretty fast. And there's our freeze frame. So that's the basics of the Timewarp Editor. Feel free to poke around in it yourself and try some variable motion, but in general just remember, you construct your variable motion in the Speed graph and you just monitor it in the Position to make sure you have enough frames to do what you want.
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