• Adobe After Effects

  Big problems to export video with alpha-channel

  Posted by Jan Stieler on May 31, 2012 at 12:45 pm

  Hi,
  I need a video with Alpha-channel for an Keynote presentation.
  I have created one in After Effects but now I have some problems to export it.
  I use quicktime with animation or png. But on both the Alpha is really crappy.
  by animation i have some white stripes in it and with png the corner have an white area, I think here is png not qualified to use grayscale alpha.

  Now could anybody say me how I can output video with an perfect alpha?

  Best regards

  Jan Stieler replied 13 years, 11 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Mathew Fuller

  June 1, 2012 at 1:04 am

  There is nothing wrong with your movie… it just sometimes displays like that in quicktime.

  The higher they fly… the much.
  My Reel:
  https://www.youtube.com/watch?v=olElCddRiBg

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• 

  Jan Stieler

  June 7, 2012 at 12:50 pm

  Hi,
  and what can I do to solve this problem?
  The videos in Keynote will everytime played with quicktime or will it help if I use another container like avi?

  BR

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