• Adobe After Effects

  Keyframe drift?

  Posted by Erik Mitchell on July 14, 2007 at 4:27 pm

  As I am using keyframes, mainly with my cameras; sometimes i notice that a keyframe seems to ‘drift’ – cant think of a better word.
  One keyframe will be at say; 529,739,829 and the next keyframe 90frames later will be at the exact same. now when it is playing back i notice in between the two the point of interest gets down to 525.5, 739, 839 and so it is doing a slight shift and then goes back at the next keyframe.
  there are no keyframes in between the two; so what does this?
  this has happened quite often lately and its driving me crazy.

  it happens with different comps, cameras, haha and it seems to happen on a part that is absolutely noticeable.

  please tell me if you’ve run into this before and what i can do to fix it.

  thanks

  Steve Morris replied 18 years, 10 months ago 3 Members · 3 Replies
• 3 Replies

• 

  Accountclosedduetonorealnameused

  July 14, 2007 at 5:01 pm

  yep, simple fix, select the 2 keyframes, set the spacial interpolation to “Linear” (under Anmation > Keyframe Interpolation)

  what is happening is the motion path between the two same points has a bend in it because it is bezier.

  this drove me nuts for a while too.
• 

  Erik Mitchell

  July 14, 2007 at 5:07 pm

  you cannot possible understand how thankful i am you replied, especially so quick.

  thank you so much! that fixed my probs instantly!
• 

  Steve Morris

  July 14, 2007 at 10:07 pm

  Aahron has a good tutorial on this if you want more info. The tutorial is called Boomerang. There are 2 parts to it.

  Both are well worth the time to watch both of them.

  part 1
  https://forums.creativecow.net/articles/rabinowitz_aharon/boomerang_1/index.htm

  part 2
  https://forums.creativecow.net/articles/rabinowitz_aharon/boomerang_2/index.htm

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