Material id path motion tracking

I'm super noob in motion and any other video editing software, sorry in advance for basic question.

I have a .png rendered frames from cinema 4d with multiple passes:

  1. Final image
  2. Material ID (bright color which define segments on the image)
  3. Reflections (just a transparent image with reflections)

What I'm trying to do is have this iPhone rendered and swap the content on the screen with image and some custom animations (message notifications) which should happen inside the screen and follow iPhone body movement.

I'm pretty sure I need some kind of rotoscoping or motion tracking but can't find any info on how to mimic particular shape by color.


so in nutshell I have one set of images looks like this


I want to reuse this animation from Cinema and just change device screen content in Apple Motion, change background image and add some animation with notifications. I have a separate set of images with material ids which looks like this


So I have 91 frame can I set a mask to follow green screen on one layer? and just apply on the tracking on top of another? I'm pretty sure it's done somehow like this, but I can't understand how to do that in apple motion, thanks in advance

MacBook Pro 15”, macOS 10.15

Posted on Jun 14, 2020 2:07 PM

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3 replies

Jun 15, 2020 11:00 AM in response to dimafromrostov

Is the bright green layer its own graphic separate from the magenta outline? If so, you can convert it to a drop zone and you don't have to worry about tracking anything. If the "glass pane" region of your 3D graphic is its own layer, you can use *that* as a drop zone — just duplicate it so that you retain the glass pane on top.


To convert an image layer into a drop zone: select the layer. Go into the Image inspector and from the Type drop down (usually set to "Off"), select Drop Zone.


Once you have the drop zone, you can apply any other image or video to its source. You can publish your project for FCPX and the Drop Zone should automatically be available in FCPX. I recommend however, that you also publish the Pan and Scale parameters and the Rotation Z parameter in Properties > Transform.

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Material id path motion tracking

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