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Activity Forums Adobe After Effects problem tracking a flare effect to camera movement…

  • problem tracking a flare effect to camera movement…

    Posted by David Lieberman on May 1, 2008 at 4:18 pm

    Hi,

    I’ve got a video clip which i shot of an alleyway and its a bit shaky… in the back of the alleyway i’ve added a glowing window. Its a solid layer with a sapphire lens flare added to it… i’v managed to make the layer move with the camera shake by parenting it to video clip (after i tracked it and all that) but my problem is that the flare doesn’t track with the layer…

    is there anything i can do to make the flare effect itself track or do i need to change the position of it frame by frame?

    thank you…

    thanx for the help.

    David Lieberman replied 18 years ago 2 Members · 3 Replies
  • 3 Replies
  • Dan Ebberts

    May 1, 2008 at 4:52 pm

    I’m not familiar with that plugin, but it’s probably just a matter of using a layer space transform expression like this:

    L = thisComp.layer(“your window layer”);
    L.toWorld(L.anchorPoint);

    Some variation of that, depending on how you have things set up.

    Dan

  • David Lieberman

    May 1, 2008 at 5:20 pm

    Hi dan,

    Thanks for the help. Im not amazing wtih expressions, so i think im dong something wrong.. I’ve tried to apply the expression to the flares position value with no luck, also applied it to the layer’s position value same result…

    am i misunderstanding you?

    thanx for the help.

  • David Lieberman

    May 1, 2008 at 5:22 pm

    hi dan, sorry im an idiot, i had the anchor point in the wrong place!!! thank you very much, you just taught me something very valuable for what im doing!!!

    david.

    thanx for the help.

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