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Thread: Great Time to Revisit Alpha Management

  1. #1
    Registered User Dufusyte's Avatar
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    Lightbulb Great Time to Revisit Alpha Management

    Since there appears to be development going on for SpeedEdit at this time, kindly revisit SE's Alpha Management.

    http://forums.newtek.com/showthread.php?t=106255

    In summary, allow for correct importing and interpretation of premultiplied alpha files; or, in layman's terms, "Don't botch the alpha on importing clips."

    This would allow SE to be used as a Compositor. It's actually a very good Compositor, except for the fact it has primitive alpha management...which is a big part of being a Compositor.

  2. #2
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    Hmm.

    Very interesting point. One I wasn't aware of but it answers a LOT of questions I had regarding SE's compositing problems I was having with the 'black edges of doom' I've struggled with.

    Thanks

  3. #3
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    That's Right!!

    Those black edges of doom are caused by inadequate handling of premult alphas.

    And, if you're going there, lets all the entire gamut of awesome Photoshop transparency & overlay possibilities - screen overlay, multiply, darken, lighten...

    They're all just mathematical functions of Channel 1 versus Channel 2... really easy to do.

    ESPECIALLY 'SCREEN'. It's the most useful of all the photoshop modes, is juts adds the luminance values of the 2 channels (Ch 1 + Ch 2) which is like 2 slide projectors showing on the same screen. It's really awesome and it's always been a need it want it gotta have it for me.

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