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Activity Forums Adobe After Effects Transparent alpha Channel problem going from AE to FCP, I am pulling my hair out.

  • Transparent alpha Channel problem going from AE to FCP, I am pulling my hair out.

    Posted by Jordan Schevene on April 29, 2012 at 7:24 pm

    Maybe I am a perfectionist and should except good enough. If, however, you can help me with this I would be most grateful.

    My AE graphics with transparent backgrounds show up with a slight dark outline when in FCP. I have read all the forums and

    Rendar Settings in AE CS4:
    Animation
    RGB+Alpha
    Millions of Colors
    Straight (Unmatted)

    FCP Settings:
    Alpha Type straight
    Prores422 timeline 29.97fps

    Please someone tell me if there is a solution. I have been reading and reading and reading the forums, and can’t get the perfection I am looking for. HELP!!

    Thanks,

    Jordan Schevené
    Boulder Productions
    Accelerating innovative business through film
    https://www.boulderproductions.com

    John Cuevas replied 14 years ago 3 Members · 2 Replies
  • 2 Replies
  • Tudor “ted” jelescu

    April 29, 2012 at 8:11 pm

    It looks like it’s a premultiplication issue – try rendering premultiplied in AE.

    Tudor “Ted” Jelescu
    Senior VFX Artist

  • John Cuevas

    April 29, 2012 at 10:11 pm

    To add to what Ted suggested, if you have glows I would suggest changing the background color of your comp(cntl + K) to a color that’s similar to your glow color. Often if I’m rendering text with a glow with a straight alpha as the alpha fades off I pick up black outlines. By changing the background color and using a pre-multiplied alpha as the alpha fades in the glow area it picks up a color similar to your glow rather than black.

    Least that how it works on an avid.

    Johnny Cuevas, Editor
    Thinkck.com

    “I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
    —THOMAS EDISON on inventing the light bulb.

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