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Activity Forums Adobe After Effects Mocha Pro, locking a track?

  • Mocha Pro, locking a track?

    Posted by Philippe Gosselin on April 23, 2018 at 10:12 am

    Hi,

    Very simple question. I am tracking a person and in the shot there is a long stretch where that person doesn’t move. Another person passes by in the foreground but my subject remain still. How do I lock the track so that it doesn’t start tracking the foreground person and remain on the still subject? Tried Ctrl+T (lock tangents) but that doesn’t do anything.

    Thanks

    Philippe Gosselin replied 8 years, 3 months ago 2 Members · 2 Replies
  • 2 Replies
  • Martin Brennand

    April 23, 2018 at 12:48 pm

    Simply mask out the foreground person. Mocha assumes anything above your layer in the layer stack is in the foreground and anything below is in the background.

    We recently did a video on this exact topic:
    https://www.youtube.com/watch?v=b0qAq5EkXhk

    Martin Brennand | Product Manager | mocha – Imagineer Systems

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  • Philippe Gosselin

    April 23, 2018 at 1:58 pm

    Hi Martin,

    Thanks for the tip, what I am doing closely ressemble the full occlusion example towards the end of the tutorial. So I guess switching to manual tracking is the way to go then. Is the mode switching global or is part of a new keyframe once I switch to it, and then once the occlusion has passed switching back to tracking will drop another keyframe?

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