• Adobe After Effects

  why does the trackmat doesn’t work?

  Posted by Nitai Lev-oren on January 23, 2019 at 1:47 pm

  

  why does the trackmat doesn’t work?

  Walter Soyka replied 7 years, 7 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Walter Soyka

  January 23, 2019 at 2:06 pm

  You are not using a track matte, you are using the “Preserve transparency” switch:
  https://helpx.adobe.com/after-effects/using/alpha-channels-masks-mattes.html#preserve_underlying_transparency_during_compositing

  Layer 6 will get its transparency from the composite of all layers beneath it, not just layer 7. Since you have only shown a sliver of your Ae UI, we can’t see if there are other layers there that may be affecting your composite.

  If you want to use a track matte, put the Shape Layer ABOVE your footage layer, then choose “Alpha Matte Shape Layer 1” from the TrkMat column.

  Walter Soyka
  Designer & Mad Scientist at Keen Live [link]
  Motion Graphics, Widescreen Events, Presentation Design, and Consulting
  @keenlive   |   RenderBreak [blog]   |   Profile [LinkedIn]

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