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Activity Forums Adobe After Effects Expressions Expression for time remapped velocity?

  • Expression for time remapped velocity?

    Posted by Peter Stenhouse on July 13, 2005 at 5:46 pm

    Hi there. Was hoping somebody could help me. I would like to know how to write an expression that will change a motion blur amount relative to the footages timeremapped velocity. I tried using “timeremap” but this just increased the blur over time rather than when it speeds up more than the original duration. I hope you understand what I mean. Basically the effect that I want to acheive is this. When the footage speeds up it blurs more, but returns back to be un blurred when it is its original speed. I was hoping to write an expression rather than key frame it to learn more and make it easier to adjust.
    Thanks for you reply
    Peter

    Peter Stenhouse replied 21 years, 1 month ago 2 Members · 2 Replies
  • 2 Replies
  • Dan Ebberts

    July 13, 2005 at 6:15 pm

    It’s going to look something like this:

    minSpeed = 1;
    maxSpeed = 4;
    minBlur = 0;
    maxBlur = 5;
    linear(timeRemap.speed,minSpeed,maxSpeed,minBlur,maxBlur)

    Where the minSpeed and maxSpeed values are multiples of normal speed. For example, 1 is normal speed, 2 is double speed, etc.

    Dan

  • Peter Stenhouse

    July 14, 2005 at 9:31 am

    thanks very much. This behaves exactly as I hoped. I’ve looked at your expression site too and found it very useful.
    Peter

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