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Inject motion specs into reference video to become an engineer's best friend
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InspectorSpacetime.jsx Counter now shows 0 and end frame Jun 20, 2019 First commit May 24, 2017 v2.1, pasteable text panel Mar 21, 2019

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Inspector Spacetime

Motion specs are a necessary part of the engineering process. It's often difficult and time consuming to deliver the data required to replicate motion on device. With Inspector Spacetime you can generate this data along side the reference quicktime, with just one click.

This is not an official Google product. Motion designers at Google just kinda like it a lot. Built by Adam Plouff.


After Effects

  1. Close After Effects
  2. Drag the InspectorSpacetime.jsx file into Applications > Adobe After Effects [version number] > Scripts > ScriptUI Panels
  3. Fire up After Effects again
  4. Navigate to the Window menu up top. At the bottom you'll see InspectorSpacetime.jsx



Select a pair or several pairs of keyframes and click the giant button. These keyframe values will be collected within a floating panel and may be copied out as text or added to a renderable blue side panel in a duplicate comp.

Pastable Text

Selected keyframe pairs are now added to the property list as plain text. Additional keys may be added to the list and the overall duration and delay of each key pair will update.

Note: Live text is dead– as of v2.1, the live text panel has been removed because it was a major pain to get useable data out with all those expressions.

Data output

Keyframe data output:

  • Property name
  • Delay time (live value)
  • Duration of keyframe pair
  • Value change
  • Cubic Bezier interpolation curve


  • May be coordinates or distance
  • 3X is the default DP for working at 1080x1920

Generator Buttons

Isolation Layer

If your comp is really busy it can be tough to clearly see what's being spec'd. An isolation layer is just an adjustment layer that will grey out everything below it to get a little more focus on what you're showing.

Time Counter

Created with every spec, a counter is also available as its own layer. Create a millisecond counter with a defined start and end point. Start the timer at the beginning of the transition to easily illustrate the global start time.


Everyone names things differently, which can lead to confusion. So draw a line from spec data to the visual element and save yourself a lot of explaining. This button will get you started, or just draw your own. Either way, it'll make your life easier.

Why the dumb name?

Named after the Doctor Who parody from the underrated NBC comedy Community. It was a really great show.

Inspector Spacetime. It's a bad pun. But I'm a dad. I can't help it.


Apache 2.0

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