track points outside footage?

[Jerry Renes]

Hi,

In the After Effects Podcast Aharon did an episode about this I guess.
You can also change the trackerpoint within te current motion track. Just motion track using the initial point first, when the selected / tracked point goes off the screen, stop the motion track. (Delete possible faulty tracked points from when the point went off the screen. move / adjust the tracking point to a new position / point to track and finish tracking the rest of the footage.

Hope this helps!

Jerry

[Ian Tomey]

Hi, thanks for the reply.

That’s kind of what I’m doing, but I can’t move the track point out of the footage to maintain the perspective.

[Peter O’connell]

Hi, try moving only the little plus sign in the middle of the tracker. Also you can just directly move the cornerpin keyframes that the tracker creates. It might help as well to apply a checkerboard effect at half opacity within you cornerpin so that you can line it up visually even if points are off screen.
Hope this helps
Pete

roguekeyframe.com

[Ian Tomey]

ahh thats how you do it… been dragging the boxes around. I’m definately not with it today.

Cheers
Ian

[Mike Clasby]

You can keep the same trackpoint, even when it goes off-screen, by Alt-Dragging it off that point that is about to disappear off screen, Alt-drag it to a new trackpoint, and it creates the data as if it where the original. Here’s a tut:

Tracking obscured objects in video

https://studio.adobe.com/us/tips/tip.jsp?p=1&id=399&xml=aft6tracking

[Jerry Renes]

You should change the tracking point (the 2 rectangles), butt the little crosshair should stay in the same place as it was in the first section of the motion track. Or you should place it back after moving the rectangles. (I’m not sure, cannot test it nou) But then it should work.

[Siddhartha Nayanananda]

I know this is an old thread but if someone still needs to know how to do this, This how I figure it out.

1. Copy the last ‘Attach Point’ keyframe in the timeline. (only ‘attach point’ key)
2. Move the Track Point to a new location in the viewer. (New proper tracking position so you can continue tracking.)
3. Now delete that last ‘Attach Point’ keyframe (previously copied). Don’t delete the ‘Confidence’ and ‘Feature Center’ keys. ( You’ll see in the viewer attach point moved to previous tracked position.)
4. Click on ‘Attach Point’ name in the timeline to select it. and then paste that key we copied.
5. Now you can continue the tracking.

Hope the help someone.