Join Todd Kopriva for an in-depth discussion in this video The Warp Stabilizer effect, part of Premiere Pro CS6 New Features Overview.
Premiere Pro CS6 includes the new Warp Stabilizer Effect. The Warp Stabilizer Effect can be used to remove unwanted camera movement from footage. Let's jump in and see how we can use this effect to repair some footage that was shot with a hand-held camera. In the Bike Race One project in the Assets folder, go to the Timeline panel and press Home to go to the beginning of the sequence. And press Spacebar to preview the first bit of the sequence. >> One, go. (music playing) Now, note at the beginning of the sequence, things were a little bit shaky.
Let's go back and isolate just this clip so that we can look at the shakiness in it and how we may be able to fix it. So, press Home again. And I'll press I to set an endpoint. Then I'll press Shift + Down Arrow to move one edit point at a time until I get to the end of this clip. I'll press O to set an outpoint. And now, if I press Ctrl + Shift + Spacebar, I can play just from the in to the out. >> Three, two, one. >> Now, this gives us the ability to just isolate that one clip. I'll set Playback to Loop by choosing from the panel menu on the Program Monitor.
Loop, and I'll also turn off the Audio, these Audio Tracks just for now. So, we don't have to hear the audio every time we play this back. So, previewing this again with Ctrl + Shift + Spacebar. There. Now, we have nice looking playback which makes it easier to analyze the movement. Now, put the mouse pointer over this little piece of wood. We can see that's really jumping around quite a lot. Given that the bike race in this scene has a lot of movement in it, I don't necessarily want a lot of movement before the bike race starts. I'd rather have this shot before the bike race starts be solid and locked down to give contrast and to give anticipation to the movement to come in the bike race. So, let's use the Warp Stabilizer Effect to lock this down. Go to the Effects panel, type in Warp, and apply the Warp Stabilizer Effect. And we get the blue banner that says it's analyzing in the background. Notice that in Premiere Pro CS6, we get continuous playback even as we're modifying effects is very useful.
I'll go to the Window menu and chose Workspace, reset current Workspace to give us a default workspace that has a larger program monitor in a larger effect Controls panel. And analysis is almost complete as we can see here and now stabilization begins. So now, if I playback with Ctrl + Shift + Spacebar, we see that our piece of wood here which is our point of reference is moving smoothly instead of jumping around.
That's because the default is Smooth Motion. But if we really want to lock the shot down, we could choose No Motion. It will take a moment for it to stabilize again. And then as playback loops, we can see that this piece of wood is hardly moving at all. And to show how this differs from the original, I'll turn off the Warp Stabilizer Effect, and we can see how much it's jumping. Turning it back on, and we're locked out.
I actually like to have a little bit of the camera motion left back in. So, I'll go back to default of Smooth Motion. There. I'll pause playback for a moment, and now we'll look at exactly how the Warp Stabilizer is doing its job. First of all, we have the Method. Method refers to whether merely the position is being changed of the image, whether position, scale, and rotation are being changed. Or whether position, scale or rotation are being changed and the image is being warped.
The perspective only warps in a corner pin fashion. The Subspace Warp warps by analyzing every pixel from one frame to the next, and moving the pixels ever so slightly to compensate for the motion. If you're familiar with previous types of motion stabilization, you'll be familiar with these first three. But the Subspace Warp is distinctive to the Warp Stabilizer Effect, so we'll leave this at its default for now. For Framing, we have the Default Stabilize Crop, and Auto Scale, or the two option before it which are really only useful for educational purposes. I'll click Stablize Only and notice that we have a bit of an edge around here.
Because the image has not been scaled up to compensate for the position that has been changed, which is itself compensating for camera motion. I'll hit Ctrl + Shift + Spacebar so that you can see exactly what's happening here. Notice if we're stabilizing only, then the effect is compensating for motion in the video by moving the layer around. But because it's doing that, it's leaving gaps around the edges. The next method, Stabilize and Crop, is then cropping around. So that we don't have a fluctuating border, but instead a constant rectangular border.
The Default, Stabilize, Crop and Autoscale scales the image up just enough to compensate for that cropping. But we have another option. I'll pause Playback for a moment by hitting Spacebar. The other option is Stabilize Synthesize Edges. I'll click that and it'll take a moment to stabilize again. Stabilize Synthesize Edges is somewhat computationally intensive. But now, what's happening is that instead of scaling the image.
The Premiere Pro Warp Stabilizer Effect is using image information from the next and previous frames to fill inn those gaps around the edges. I'll press the Right Arrow key to move ahead one frame at a time slowly. And press the Left Arrow key to move back one frame at a time slowly. And what I'm looking for are artifacts that come from synthesized edges, and here I see one. I'll zoom in a little bit to 100%, and I'll press the Accent key to maximize the frame.
And I'm pressing the Left Arrow key again to find a good example of this artifact. There we go. This edge right here, which has been filled in by synthesize edges, doesn't really seem to fit. So, how can we fix that? I'll press the Accent key again to put that panel back to its regular size. And I'll fit this into the frame. And here, now that you know what to look for, you can probably see that artifact as well. So, we can go down to the advanced settings and choose a different value for synthesis edge cropping instead of the default of zero. What is likely happening here is that there is one dark vertical column of pixels in the footage that if we simply crop it off, won't be considered in synthesize edges.
And there, by removing that one pixels, by cropping one pixel off the left, just for the purpose of synthesis of edges. We've gotten rid of our artifact. So with the Timeline panel active, I'll press the Right Arrow key to move slowly one frame at a time through the movie to see if we see any other artifacts. And when we reach the end of the clip, I'll go back Left Arrow one frame at a time, slowly, looking for more artifacts and I'm not seeing any.
Just by making one tiny change to the cropping we've gotten rid of the artifacts created by synthesized edges. Nope, that looks pretty good. Another way of dealing with artifacts around the edges is just to scale up a little bit yourself. You can do that with additional scale. So, if I bump that up to say 102 instead of the default 100, watch how a little bit of scaling happens in the program monitor.
Just a tiny amount. But if you have some edge artifacts, that's one way to get rid of them. Most of the parameters in advance, you don't need to worry about. But detail analysis, for example, we'll simply do a more detail analysis of the motion in the image. Usually, you don't to worry about this. But if you would like to spend a little bit more time on analysis for more precise results, you can check that. Rolling Shutter Ripple is automatically reduced, but you can reduce it by even more. We don't have any Rolling Shutter Ripple in this footage because it wasn't shot with a camera that has that problem. And if you get Edge Artifacts, you might choose to tell Warp Stabilizer to look farther ahead and back in time when looking for pixel information to fill in around the gaps.
So, that's a quick overview of the Warp Stabilizer Effect in Premiere Pro. But as you saw from the beginning, really just by applying the default settings, everything looked a whole lot better.
- User interface improvements
- Importing and sequence setup improvements
- Editing improvements
- Effect improvements
- Performance improvements
- Audio improvements
- Exporting improvements
- Miscellaneous new and removed features