• Avid Media Composer

  3D Matte Key Image Disappears

  Posted by Leah Chapman on July 1, 2008 at 5:58 pm

  I’m working on Avid Express Pro and just encountered a puzzling problem. I was working on a big project with lots of timelines and motion effects created with the Effects Editor. I took a break for a couple of weeks, and now if I modify anything on the timeline, the graphics (with alpha) on the layers above it become invisible, even after I render it out. I can still open the clip and see all the keyframes and parameter values, but the graphic itself remains invisible.

  I tried re-importing one of the graphics (a Photoshop file with alpha channel) and was able to successfully put the clip into a new timeline. When I open the clip using the Effect Editor button on my timeline bar, I can change the parameters and everything is fine. One I hit the 3D button in the Effect Editor – thereby changing the effect from “Matte Key” to “3D Matte Key” – the graphic becomes invisible.

  I’ve got about a dozen other projects in the system and this is the only one with this problem. I searched the forums using some of the keywords above and didn’t find anything. Does anyone know why this happens and how I can fix it?

  Thanks in advance.

  Leah Chapman replied 17 years, 10 months ago 1 Member · 0 Replies
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