• Adobe After Effects

  LED lights

  Posted by Jason Yardley on May 7, 2007 at 9:24 pm

  I need to make a visual representation of LED lights going up a and down to a piece of music,
  I know I can use Trapcodes soundkeys to do this, but I can’t think how to go about this, Do I need to make the lights as masks, and then make a gradient from greed to red in a comp, then add the lights as masks and then some how from the output keyframes of the soundkeys plugin, add those to the gradient comp so that the gadient goes up and down behind the the masks of the LED lights, or does anybody know a better way of doing this effect.

  Jason Yardley replied 19 years ago 3 Members · 3 Replies
• 3 Replies

• 

  Mike Procunier

  May 7, 2007 at 10:49 pm

  You’ve pretty much hit the nail on the head. I’d use the data from Soundkeys to control the vertical scale of a rectangle shaped matte layer. Make sure the anchor point of the matte is at the bottom & feather the top edge so you don’t see any hard edges as it rises and falls. Use this matte over your gradient. Then put your LED mask on top of everything and set it to Stencil Alpha. If you’re not familiar with Soundkeys try creating a similar matte using the Audio Spectrum effect (in Effects/Generate).
• 

  Mike Clasby

  May 7, 2007 at 11:17 pm

  Here’s a tut that does what you want, methinks.

  Creating Powerful Motion with Simple Expressions in AE by Talid Al Khatib

  https://www.creativecow.net/articles/al_khatib_talid/volume_meter/index.html
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  Jason Yardley

  May 8, 2007 at 9:26 am

  Thanks for the advice Lads

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