• 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, 8 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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