• Adobe After Effects

  Motion 4 – why does my mask slip when I add video

  Posted by John Paterson on August 16, 2011 at 12:53 pm

  I have created a template in Motion 4 where I have an aeroplane cutout moving from left to right. Underneath I have a dropzone with a mask that moves underneath the plane so that the planes movement reveals the video. In Motion both layers stay in sync, however when I use the template in FCP7 and add video to the dropzone, the video first lags behind the plane then overtakes it. Why?

  Jasper Paterson

  John Paterson replied 14 years, 11 months ago 2 Members · 2 Replies
• 2 Replies

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  Stephen Smith

  August 17, 2011 at 1:46 pm

  Is the new clip a different size then the drop zone? I find it is best to add a mask to a group that the clip/drop-zone is in because of this.

  Stephen Smith
  Utah Video Productions

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• 

  John Paterson

  August 17, 2011 at 1:58 pm

  no its exactly the same size as the composition, that’s why I can’t understand the timing error.

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