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Activity Forums Adobe After Effects Expressions Strobe Light – Ideal Settings?

  • Strobe Light – Ideal Settings?

    Posted by Eric Jordan on June 10, 2005 at 6:50 pm

    Whenever Im working with the Stylize>StrobeLight effect in after effects, I can never get it to blink rapidly fast (ie: a strobe per every other frame). Ive been tweaking the settings for strobe duration and strobe period, but I can never get the values right. Does anyone have any insight into the best parameters for this effect to get really rapid blinking?

    Thanx much to anyone who can help.

    Aharon Rabinowitz replied 19 years, 8 months ago 2 Members · 1 Reply
  • 1 Reply
  • Aharon Rabinowitz

    June 12, 2005 at 2:02 am

    Man I hate that effect. It doesn;t work on frames, it works on seconds.

    If you are trying to get that layer to just wink in and out of existance quickly, what I’d suggest is seting 3 opacity keyframes and making an expression that loops them.

    These should be hold keyframes by the way:

    Time Opacity

    00 100%
    02 0%
    04 100%

    The expression in the opacity property should be:

    loopOut(type = “cycle”)

    This will loop the opacity so that it blinks every 2 frames. Move them closer together and it will be every other frame.

    If, on the other hand, you are trying to flash the layer as a color, I’d suugest the same thing for keyframes only applied to the effect called Image control > Tint

    Set both Tint Colors to the color you want and then set the same keyframes and expression for the amount to tint.

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