• Adobe After Effects Expressions

  frames from pre comp

  Posted by Jack Parks on October 20, 2008 at 4:11 pm

  Hi,

  does any one know an expression that does the following…
  [I thought I had seen one somewhere to generate storyboards from clips]

  A video clip is in a pre comp.
  In the main comp drag the precomp and the expression would show a still frame,
  this layer is duplicated and each shows a different still frame either from typing a specific value
  or relating to its layer number (layer 1 shows frame 1, layer 2 frame 2 etc)

  Hope this makes sense.

  Thanks

  Jack Parks replied 17 years, 6 months ago 3 Members · 5 Replies
• 5 Replies

• 

  Darby Edelen

  October 20, 2008 at 4:17 pm

  The only way I can think to do this would involve time-remapping and doesn’t require that you pre-comp your footage (unless there layers other than your footage involved). Apply this to the time re-map:

  framesToTime(index);

  And that should do it assuming that the footage layers in your main comp start at index 1.

  Darby Edelen
• 

  Jack Parks

  October 20, 2008 at 4:28 pm

  Thanks for your help, I will try it.
  Thanks again.
• 

  Jack Parks

  October 22, 2008 at 10:49 am

  Hi, is there a way to adjust the expression, so the layer order is reversed?
  This way the layer above would be the next frame.

  Thanks.
• 

  Dan Ebberts

  October 22, 2008 at 1:06 pm

  Something like this:

  framesToTime(thisComp.numLayers – index)

  Dan
• 

  Jack Parks

  October 22, 2008 at 1:27 pm

  Hi,
  That works great.
  Thanks

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