• Adobe After Effects Expressions

  Tracking Problem

  Posted by Staeff on November 29, 2006 at 4:53 pm

  I’m trying to track a camera pan to animate some clouds for the scene. Because my pan is about 180

  Staeff replied 19 years, 9 months ago 3 Members · 3 Replies
• 3 Replies

• 

  Mylenium

  November 29, 2006 at 7:09 pm

  Well, you are switching tracking points and that’s all that needs to be said. By cahnging the tracking points, you effectively cahnge the angular relation and in that case you simply cannot expect to get proper results. Split up the clip or track all trackers at once, than calculate your rotation by averaging their values using expressions. You can of course use alternative tracking tools such as PFHoe that support extrapolation of brocken track paths and try your luck.

  Mylenium

  [Pour Myl
• 

  Tony Kloiber

  November 29, 2006 at 10:25 pm

  If you track rotation you can’t change your tracking positions as you have. A different spot on the same circle is traveling in a different vector (direction) than any other spot on that circle, even if sooner or later they move through the same points in space it happens at a different time.

  The sample clips show a chimney. The left and right sides of that object would be the best bet.

  Good Luck

  TonyTony
• 

  Staeff

  November 30, 2006 at 7:29 am

  Thanks Mylenium,
  and greetings to Leipzig from a former Dresden-boy. 🙂

  Thanks also to TonyTony.

  Stefan

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