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  • My motion tracker is off..

    Posted by Esther Casas on October 9, 2008 at 6:14 pm

    Hi there..
    I am new doing motion tracker with AE. I’ve done a solid layer ( following AE tutorials) and at the end my mask is off in some points.
    I tried to put my point tracker in different places of the video, which moves a lot! but same thing happens.
    I set up the apply tracking to X and Y.
    What else can I try to get a nice movement of my mask motion tracked??
    Thank you!
    E.

    Simon Bonner replied 17 years, 7 months ago 2 Members · 3 Replies
  • 3 Replies
  • Simon Bonner

    October 9, 2008 at 11:48 pm

    If the video has a lot of motion, be sure to expand the size of the outer ‘square’ of your tracking point. This square signifies the area the tracker uses to search for the track point frame to frame. The bigger the area the slower the tracking – but if the video moves a lot, you may need it to be bigger.

    If all else fails, use the page up/down keys to identify badly tracked frames and use the cursor key to manually correct tracking.

    Simon Bonner

    youtube.com/simonsaysFX

  • Esther Casas

    October 9, 2008 at 11:58 pm

    Simon, thank you for your answer.
    i think the images just moves too much!!
    But one question:…i am not sure what you mean with the page up/down keys and the cursor key…do you mean looking at every single key, right? and change every single feature center, confidence and attach point? so much work…

  • Simon Bonner

    October 10, 2008 at 2:29 pm

    It will be a lot of work if the track is off in every frame. Some footage is just very difficult to track. You only need to change the position of the cross (the actual position of the track) though, not the boxes around it. They’ll move along with the cross.

    Another trick might be to track different parts of the footage and then parent the tracks together (see the videocopilot.net tutorial on “set extensions” to see how to do this). This can be a useful technique if a track point is a good candidate at the start of the track, but is obscured halfway through or disappears off screen, at which point it can be replaced with another track point.

    Simon Bonner

    youtube.com/simonsaysFX

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