Skip to main content
Participating Frequently
September 26, 2017
Answered

Camera tracker in After Effects

  • September 26, 2017
  • 1 reply
  • 769 views

Can't get a usable track because camera tracker is returning xyz numbers that are too large.  Numbers are so large (well over two million) that tracker dots won't even show on the screen.  And I certainly can't use the xyz coordinate numbers for something like Element 3d because the greatest depth that it will show an objects is 2-million units.  Please help.

    This topic has been closed for replies.
    Correct answer Mylenium

    Impossible to tell you anything without seeing your footage. Generally though you have no way of controlling this. All solutions of the 3D tracker are arbitrary because it has no way of being calibrated using reference markers and measuremnts. That being the case, you will have to use other tracking tools if you need to match the scene to 3D objects and have predictable measurements. As a hacky way you could try parenting the camera to a Null and scale the Null, but this messes with the FOV and thus things won't align properly and you still have to fiddle and readjust the focal length and such.

    Mylenium

    1 reply

    Mylenium
    MyleniumCorrect answer
    Legend
    September 26, 2017

    Impossible to tell you anything without seeing your footage. Generally though you have no way of controlling this. All solutions of the 3D tracker are arbitrary because it has no way of being calibrated using reference markers and measuremnts. That being the case, you will have to use other tracking tools if you need to match the scene to 3D objects and have predictable measurements. As a hacky way you could try parenting the camera to a Null and scale the Null, but this messes with the FOV and thus things won't align properly and you still have to fiddle and readjust the focal length and such.

    Mylenium

    stats1979Author
    Participating Frequently
    September 26, 2017

    Well the after effects tracker is mostly useless then.  Do you know a good 3rd party tracker, that also has lots of tutorials?