5.2 Speed Ramping
You will learn how to apply a speed ramp effect to aerial footage.
1.Introduction1 lesson, 01:28
2.Preparation2 lessons, 10:13
3.Optical Fixes2 lessons, 13:45
4.Color Correcting Aerial Footage1 lesson, 07:04
5.Footage Speed4 lessons, 18:19
6.Stabilization1 lesson, 10:41
7.Zooming in Post1 lesson, 04:45
8.Color Grading Aerial Footage1 lesson, 11:26
9.3D Camera Tracking Aerial Footage1 lesson, 07:43
10.Conclusion1 lesson, 00:59
5.2 Speed Ramping
All right, in this lesson we're gonna learn how we can apply a speed ramp effect to our aerial footage. It's a very popular effect, it's often seen on aerial clips. I'm gonna be working with the example clip five from the project files, so I'm gonna click on my clip, I'm just gonna drag it down here so it creates a new composition. All right, so what we've got here is a 30 second clip of the drone flying over this road. I'm gonna drag this through so we can see. So, we have the drone flying through we're going to fly zip above the treeline here, so being it'd be really cool if we had a speed ramp effect on our shots so that it went really fast right up to about here, and we see some real time footage and then it feeds up again right up to about right here and then goes back to regular speed. This is an easy effect we can do in after effects and first thing we need to do in our example clip I'm going to click it I'm going to right click, we need to go to time, enable time remapping. Alright so what that's going to do is create a keyframe in the very beginning and end of our clip, and basically everything in between is going to be playing at real time. So what we need to do is go through and add keyframes at certain points where we want instances to occur so I'm gonna move down on my clip here to about right here where I want the first speed ramp to stop. So basically what I want to occur is for the clip to go really fast up to about right here and then go at a regular time. So what I want to do is create a keyframe right here by clicking on this little diamond icon. And I want it to play at a normal speed to about right here or so. And then I want to speed it up. So I want the regular speed portion to end I need to create another keyframe. Click right here. So I want this to be sped up again, so I want it to be going really fast right here. To about right here when it gets over that tree. So what I am going to do is create another keyframe, and I want this to playback in normal time. So now we've created our keyframes, and everything is still playing at the same speed. So if we want to adjust this, what I can do is select all the keyframes. Except for the very first one, I can pull this down. So basically what this is doing is speeding up everything in between these two initial key frames. So if I bring this down to about right here or so. So basically that entire ten second area of footage right in between here is now compressed to about one to two seconds. So it's going very quick. So let's go ahead and run a preview of this, just so you can see what's happening. So we can see it goes really fast at first then goes back into regular motion right there, and that's exactly what we want. We then want this to speed up again. So if we want this to speed up again, what we need to do is take this area in between these two key frames here. So this is the real time section here, so I don't really want to move either of these two key frames separately. So I don't wanna drag this one around cuz that's gonna mess up the timing in between there. So I'm gonna hit control Z to un-do that. So basically, you want to leave the gap between these two key frames alone. You want that to be the real time section, which I do. And this area right here, I want to be sped up. So I want to grab these two key frames, making sure not to move one by itself, and I'll move both of them at the same time by selecting them both. I'm just going to drag these down to be about right here or so what we should have here is we have this little area. It's sped up. We have a real time section. Speeds up again and back to a real time section and back to a real time frame. Just going to stop and hold because it's actually the end of a clip. So what I"m going to do is highlight this keyframe here and I"m going to hit n on the keyboard just to close this workspace area here because when we speed up the footage basically all this section after the last frame is just gonna be stuck on the same frame and we really don't need that. So I'm just gonna preview this area here. So I'm gonna hit zero on the numeric keyboard again so we can run preview this. [SOUND] Now we can already see we're getting a really cool effect for using that initial speed up, some real time right here going nice and smooth and then it speeds up again right there over the tree tops. And we can push this even more extreme. So basically I'm gonna take this first section here, I'm gonna splice all of the key frames except for the very first one. I'm gonna move this down even closer so it goes really fast right at the beginning. Then I wanna close this gap right here and I'm gonna grab these last two key frames, move them a lot closer so it just speeds up a lot. And I'm gonna go ahead and ran preview this again. Alright, that's looking a lot better. Really fast right there at the beginning with the slow drifting motion and speeds that begin right there over the tree tops. Right. So, this looks pretty good. We could almost stop right now if we wanted to. But we can do a couple of other things to finesse this so it looks even better. So the first thing I wanna do is smooth out these keyframes just a little bit more. So I can select all of my keyframes. I can hold control and click and that's gonna to create roaming keyframes. That's gonna transition them just a little bit smoother. So I can go ahead and preview this. And there we go. Just gonna help ease in and out from the extreme speeds a little bit easier. And you see it added a little more of an overall smoothness to the shot. And the next thing we can do is add a little bit of motion blur to our shot here. If you notice in this very beginning section it's almost kind of choppy cuz it goes so quick. Cuz basically what we've done is we've taken about ten seconds of footage and compressed it into about one second. So there's a lot of frames that aren't being used and so we're getting kind of almost like a strobing effect on our footage. I wanna get rid of that, and it's really easy to do. So what we can do is, on our clip, we can go over here to the frame blending, and we can select it once. And that's gonna enable frame blending. So what that's gonna do is take all those frames that were initially in that first little ten second area right here and it's going to basically overlay them all on top of each other so we kind of get this realistic motion blur effect. Now, you only want to click the frame blending once, you don't want to click it twice, because that's going to go to pixel motion, and that's not what we want. So you click it again and it's going to go away and we click it one more time to turn on frame blending. And in order to see what this is doing, you need to enable frame blending right here in the composition. So I'm going to click that on. And now we can see what's happening Some extreme zoom effects where you can get some really cool motion blur on our shot. I'll zoom in here so we can see this a little closer. So basically what you can see is overlaying all the different frames on top of each other reading some really cool looking organic motion blur and this is gonna look really cool when we preview this. Now it will take a lot longer to preview We're doing a frame blending just because it's doing a lot of intercalation with all the frames, but I'll go ahead and run preview just so you see how much better this actually looks. And there you go, you can see we get some really cool, organic, and natural speeding up and slow down of the footage. It's a really cool speed ram effect, works great on aerial footage to really make your shot stand out. Now one thing I noticed is that when it goes back to the slow-motion effect the roaming key frames are slowing it down a little more than I actually prefer. So I'm going to select all my key frames. And this is just a stylistic choice. You can do this either way. So I'm going to control click these back to normal key frames. Because I actually don't want that to slow any of this portion down. Another thing I noticed that when the frame blending is going on. This is kind of an extra tip here. You might see up here in the sky and this is pretty common with aerial footage because of the blues. But I'm getting a little bit of color banding here. I don't know if you can see this with the compression of the tutorial. But you can see kind of lines coming across here. And that's because of the subtle blue color change from the top to the bottom. There's a couple of things we can do to get rid of this. Even if you have this problem on other instances of your aerial footage. Over here, on the baseboard channel and after fix, you can click that, and we're currently working in 8 bits per channel. You can change this to 16 and click okay. And that will probably help a little bit but in our case, I still see the color bating going on so, what I want to do is I want to right click here and create a new adjustment layer. We go to my effects window here. We'll add the effect noise. You can find it right here under noise and grain. I'm going to select noise and I'm going to put that on the adjustment layer. Basically what we want to do is add just a little bit of synthetic grain to our image. It's going to help break up that color bandings. Under the amount of noise here, I'm going to type this about 4%. I typically put this anywhere from two to four percent. I might increase this a little bit because I know it's gonna be hard for you guys to see this with compression of the video. This is gonna help break up that color banding there. You can choose the use color noise or to use regular black and white noise. But basically it's just gonna add kind of a little bit of a film grain. To your footage, and it will help break up that color banding that's going on. I actually prefer to use the color noise. It tends to work even better to break up the banding. I might bump this up to 8% though, so you guys can see this on the video a little bit easier. So I'm gonna go ahead and do one more RAM preview of this, so we can see what this looks like. And there we go, it's looking a lot better. This is just an phenomenal effect for aerial footage. Really help your shots to stand out. If you wanna render this out, we can do the set your work area here to the length of your speed ramp. So mine ends about right there so I wanna have my work area in right there on that last key frame. Then we can go back up to our project panel here. I'm gonna go to the render cue. And if you don't see the render cue, you can go to Window and select render cue right there. So I'll just grab my composition here, in my case it's called example clip 5, I'll drag that down to the render queue. From here I can adjust my settings for different things I want. If I wanna do a QuickTime video I can go to custom, Quicktime, choose my codec, click okay, then you can output it right there and just hit render. In the next lesson we're gonna learn how to do a faux slow-motion effect on our footage, which is basically a If we finish a shot at normal 24 or 30 frames per second, then we want to try and slow it down just a little bit in post.