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Activity Forums Apple Final Cut Pro Legacy alpha channel

  • Posted by Darren Jonusas on September 24, 2007 at 3:53 pm

    Having a little issue with a moving graphic that includes alpha channel, made on After Effects on a PC. Loads into FCP fine, looks lovely in the viewer, but when I cut it into the canvas the alpha vanishes. I’ve RTFM and fiddled with a few settings, but no luck so far. Any ideas?

    I’m on FCP v 6.01 on a Dual Core Xeon OSX 10.4.10 4GB RAM. Rushes are DVCAM taken in PAL DV.

    Tom Wolsky replied 18 years, 11 months ago 3 Members · 3 Replies
  • 3 Replies
  • Arnie Schlissel

    September 24, 2007 at 4:05 pm

    Exactly what settings have you fiddled? Most of the problems people have with alpha channels are that they’re not interpreted properly by FCP (or whatever other program is involved). Most of the time, this simply gets solved by changing the setting of the alpha in the browser.

    Arnie
    Now in post: Peristroika, a film by Slava Tsukerman
    https://www.arniepix.com/blog

  • Darren Jonusas

    September 24, 2007 at 6:55 pm

    i dragged the quicktime from its folder on the media drive into an FCP bin. checked item/properties, which indicated alpha channel. alpha appears ok in the viewer: in the shape of the text with a nice soft blurry outline. as soon as i cut it into the canvas, the alpha becomes full-screen white i.e. no alpha.

    the settings i fiddled were: altered the alpha from ‘straight’ to ‘black’ then ‘white’ then ‘no alpha’. also tested all the overlay methods i.e. additive, subtractive, screen, etc. loaded the clip into AE, alpha looks fine.

    i’m in a PAL DV project.

  • Tom Wolsky

    September 24, 2007 at 7:41 pm

    What codec is the file?

    All the best,

    Tom

    Class on Demand DVDs “Complete Training for FCP6,” “Basic Training for FCS2” and “Final Cut Express Made Easy”
    Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 3.5 HD Editing Workshop”

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