Quizzler #2 solution: Stabilization plus tracking
Video: Quizzler #2 solution: Stabilization plus trackingYour second Quizzler challenge was how do you both stabilize and track the same shot? We want to stabilize the bouncy tripod motion in this shot but also attach our text bubble to the second wildebeest moving across the scene. Well, our solution is down in the Quizzler 2_solution folder. I will twirl that open and again you will see that we use a divide and conquer approach. In one composition, we stabilized the wildebeest shot, here's a motion tracking information and here's the anchor point animation.
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Explore how to use the motion tracker and stabilizer built into After Effects and shows how to handle a variety of shots. Author Chris Meyer leads a quick tour of the third-party software mocha and demonstrates the workflow for The Foundry's KEYLIGHT, both bundled with After Effects. The course also covers tracking a greenscreen shot with a handheld camera and replacing its background.
The After Effects Apprentice videos on lynda.com were created by Trish and Chris Meyer and are designed to be used on their own and as a companion to their book After Effects Apprentice. We are honored to host these tutorials in the lynda.com Online Training Library®.
- Understanding motion stabilization and keying
- Performing a track
- Applying tracking to effects
- Keying with KEYLIGHT
- Replacing images
- Improving the composite
- Garbage masking
- Dealing with interlaced footage
Quizzler #2 solution: Stabilization plus tracking
Your second Quizzler challenge was how do you both stabilize and track the same shot? We want to stabilize the bouncy tripod motion in this shot but also attach our text bubble to the second wildebeest moving across the scene. Well, our solution is down in the Quizzler 2_solution folder. I will twirl that open and again you will see that we use a divide and conquer approach. In one composition, we stabilized the wildebeest shot, here's a motion tracking information and here's the anchor point animation.
That was result of applying the track to stabilize it. As you may remember from earlier in this lesson, once you do that, you do have problems with your video no longer filling the entire frame, one solution is to scale it up, and re-center it. But another solution many people use is they will just make a copy of the footage, paste it behind and use some trick maybe even like a feathered mask to blend the edge between the stabilized footage and the original full frame footage. This doesn't look too bad actually because we do have fairly constant colors around the edges.
Once I have a stabilized composition, again I will nest it into a second composition where I perform the motion tracking. Since liked that composition but I have tracked the stabilized shot that's used so you can see the tracker keyframes and applied that which is apparent to our pointer and our text just like we showed you earlier in this lesson; and this is the result that text thought bubble being attached to the second wildebeest by using tracking. By the way just another creative I've thrown here, I have key-framed the text animation to change the line right in the middle, and by the way, text was a subject of a completely different After Effects Apprentice lesson, but I might change my key-frames here, so that he seems to look at us just as he is making that comment.
So I am going to grab these key-frames, drag them later in time, preview that animation and see if this plays better for laughs. Yeah, I might tweak the time a little bit more, move it back a little bit earlier so the text stays on screen longer so I can read it better. But, that's something to keep in mind when you're working on shots like this. Don't just do the mechanical work of the stabilization and of the track, also look at the footage, think about your timing and think about how to make the shot play out more effectively.
Let's try that key-frame idea. Yeah, I like that better. Again, it's all about dividing the task into individual modules you can solve, then combining them to create your final result.
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- Q: This course was updated on 12/12/2012. What changed?
- A: We added new chapters on the Warp Stabilizer and the exciting new 3D Camera Tracker, and new movies on the Tracker panel, converting to ray-traced 3D, and rolling shutter repair, all new features introduced in After Effects CS6. In addition, there are new sets of exercise files designed for After Effects CS5.5 and After Effects CS6 and a companion movie that shows our premium subscribers how to use the exercise files.
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