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Activity › Forums › Adobe After Effects Expressions › Alpha channel with a video wall

  • Alpha channel with a video wall

    Posted by Ryding_east on October 12, 2007 at 6:42 pm

    thanks again for the help yesterday. i have one more for ya.

    i am building a video wall that is 10 squares(comps) x 5 squares (comps) of a CU that has been keyed out. i was wondering if there is an expression that will push indivual squares out (z space) as the subject in frame moves, ie so the movement of the subject changes the z space.

    thanks in advance. u guys rock!

    Ryding_east replied 18 years, 11 months ago 2 Members · 2 Replies
  • 2 Replies
  • Filip Vandueren

    October 16, 2007 at 5:05 pm

    Easier would be to base this on the card-dance plugin.
    You can point it to an auxilliary layer (a precomp of your subject, where you create a black and white version of the key), the brightness off those pixels will push forward the individual “cards” in Z-space.

  • Ryding_east

    October 16, 2007 at 8:36 pm

    thanks filip…this is a huge time saver. really appreciate it.

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