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Activity Forums Adobe After Effects Rednering shadows for AE lights on transparency

  • Rednering shadows for AE lights on transparency

    Posted by Mike Throck on October 21, 2010 at 7:23 pm

    I’ve got some 3d objects casting shadows onto a white solid set to multiply, which catches the shadows. All of this is on top of a video layer.

    How do I render these out with transparency? When I turn off the video layer under the white solid, the transfer mode turns the solid back to white, and no transparency is present.

    Mike Throck replied 15 years, 6 months ago 3 Members · 4 Replies
  • 4 Replies
  • Michael Szalapski

    October 21, 2010 at 7:32 pm

    Are you planning to use this in an NLE or just as a precomp in AE?

    If you’re staying in AE and you put it in a precomp and enable the continuous rasterization switch, everything should work for you just fine.

    – The Great Szalam
    (The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)

    No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

  • Mike Throck

    October 21, 2010 at 7:57 pm

    No, it’s a graphic that needs to be able to be used in an editor.

    Can this even be done?

  • Chris Wright

    October 21, 2010 at 8:08 pm
  • Mike Throck

    October 21, 2010 at 8:21 pm

    That was a pretty intense post, but I found the response that seems to work.

    Using the channel combiner, but because I’m using a white solid instead of black, set “FROM” to MIN RGB and “TO” to Alpha. Then Invert.

    Thanks for the link,

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