How do you drag a motion tracker outside the comp?

[Chris Smith]

For what purpose? It can’t track what is not there.

Chris Smith
https://www.sugarfilmproduction.com

[Justin Productions]

Well, Chris, with all my respect, and correct me if I’m wrong, but I don’t think that would be hard.

One and easy way of doing it would be; when your tracked object will be going off edges of your video, set your feature region somewhere else on your video footage so it can still follow the movement.

Be careful to put your featured region so it follows the same speed and velocity as the tracked point. I’d start by precomposing and adjusting my video footage by making it 1200X900 (4:3 ratio) and by making your comp pourcentage to 50%. This will adjust the size of your video footage so you will be able to track easier when it’s outside the comp in the blank areas. Adjust the featured region, frame by frame, until your tracked point comes back into the comp.

The other way would be to go in your Motion Tracker Option window and to bring choose the Extrapolation Motion option, below 95%.

Hope that helped.

Justin Productions
Tangerin01@hotmail.com
Adobe After Effects 6.0 Professional

[Chris Smith]

Tracking a new feature is a totally different thing and is pretty standard an almost every track I’ve ever done. I was wondering why there would be a need to track what video isn’t there. Unless of course I am interpreting wrong and the video you are working with is a higher resolution than the comp.

Chris Smith
https://www.sugarfilmproduction.com

[Zander]

whit if your nesting a larger comp into a smaller comp and you need to track that larger comp, and there by, wy don’t you track inside the other comp and bring in your data to the current comp?

Aaron Zander
student editor at brooks institute of photography
12″powermac g4 1.25gb ram, 1.5 GHZ macosx 10.4.6 1.3tb external space
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looking for partime work in l.a. area very eager

[(michael) Kelly sutton]

For the record:

Tracking past the edges of a video file is useful when using the extrapolate motion feature.

For example (and something I’ve done in the past): A bus rolls onto the screen, then rolls off. There isn’t a single point in the video where you could parent the layer to (let’s say a billboard) and have it roll on and off the screen. It can save a huge headache of having to keyframe the motion the instant your track leaves the screen.