Tracking / Stabilization
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Subtitles of the Movie
Stabilization is an Operator that you can use to steady a moving Camera. So if you're like me and you have shaky hands and every time you shoot video the camera is moving to much, you can use stabilize to make everything look nice and calm. So what we're going to do is as usual create a brand new Composite and actually I want to show you something different. We're now going to create a New Composite, I want to show you a different way to Import Footage and the way I'm going to show you now will have Combustion automatically match the size of the Video as well as its duration. Now as you see normally when we create a Composite we get a Duration Depth, whatever's here. By going to File and choosing Open we can bring in some footage and you'll find yours called Eruption.Mov in the Video Folder in the Work Files folder. You can bring this in and then you get the open footage dialog box. So you can decide what Operator you'd like to bring it into. I'm going to choose 2D Composite, I'll click OK and now we can see that the duration has changed to match the footage exactly and the Aspect Ratio changes of course to match the Video as well. So every once in a while I just want to throw in a different way of working to keep things fresh. Ok, let's talk about what the stabilizer will do for us. So, I'm going to play this footage back first, as you see the footage moves quite a bit, alright, so Volcanic Eruption and I want to steady this so that nothings moving at all. So what I want to do us right click on the eruption footage and then I'm going to add an Operator and of course I went too fast, its in the Stabilize Category and I'm going to choose Stabilize two points. The reason for this is because with two points for the Tracking to lock onto it'll have a more accurate Stabilize Operation. OK, now we have our Stabilize two points Controls that show up down here. I have Point One and Point Two, what I'm going to do is click on the little Cross here and as you can see we have our first point and I'm going to click and I'm going to drag it to some place that has a good amount of Contrast. Let me just zoom in so I can show you what I'm doing here. I think that this Black Point against the White and the Blue is a really good place for the Tracker to keep his eye on. Now I'm going to Add the second Tracker of Stabilizer and I think I'll put this one over here, another really High Contrast Location. This black peak at the mountain and the blue sky. OK, so I have my Trackers in place and what I want to do now is go to the actual Tracker Controls, so I'll click Tracker, I have to of course turn the Tracker On so I'll go right here where it says Off and click Position. Now the Tracker is On, we need to tell Combustion that we have two Trackers and that this Operation should select both Trackers. So we'll click right here, select all Trackers and they both Activate. Then we can choose how much we want this Track to work as far as accuracy and also based on how much it's really moving around. Since we don't have any Rotation, we don't really have to use Roaming, we can use Fixed but I'm going to put it on Roaming anyway. Tolerance will of course tell the Tracker how much or how little to really lock onto each point and we can also choose an Axis, X and Y, Y only or X only. So I'm going to keep it on both because the Island is moving up and down which is our Y and of course this way as well which is our X. OK, so we have the main things that we need on, now I'm going to click before Analyze Button right here and if you look in the Viewport you see that the Tracker kind of doesn't move anymore, it just kind of stays there when the other box moves. Now as we already know by now when we're Tracking something in order for the data to actually lock on and to be incorporated into our Composite we need to click Off. So I'm going to now rewind, I'm going to go to the Window Menu and I'm going to deselect Show Wire Frame Icons so I don't see those guys and now I'll press Play. See the difference, it hardly moves at ll. Now of course a little later on it started to lose some of its Stability where we can always try that Tracking Operation again and I also wanted to show you that what happens when it Tracks is it actually moves the Frame of footage. So as the footage moves around you're going to have these Black Bores appear so of course you're going to have to crop it or something like that. So I highly recommend that you shoot your Video in a larger resolution then you need so you have some room to actually crop when necessary. So once again, Tracking will pretty much give you a much more Stable Operation when used in conjunction with the Stabilze Controls.
Tutorial Information
| Course: | Autodesk Combustion 2008 |
| Author: | Dwayne Ferguson |
| SKU: | 33903 |
| ISBN: | 1-934743-90-9 |
| Release Date: | 2008-09-08 |
| Duration: | 9 hrs / 121 lessons |
| Work Files: |
Yes |
| Captions: | Available on CD and Online University |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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