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Activity Forums Adobe After Effects QT+A-channel from AE > FCP

  • QT+A-channel from AE > FCP

    Posted by Riccardo Zito on May 22, 2006 at 11:04 pm

    Hello,
    I have masked a clip in AE and would like to export the final QT and import it in FCP with the A-channel.. i.e. I would like the masked clip to seemlessly overlay another layer in FCP. Sadly the QT I export comes with a black ‘background’ which seems to be irreversably fused with the masked subject. What happened to the checkered background I have no idea…??
    Can anyone help..?
    Thanks
    Riccardo.

    Jaso Allen replied 19 years, 12 months ago 5 Members · 6 Replies
  • 6 Replies
  • Bhoneck

    May 22, 2006 at 11:16 pm

    What we do here is render millions of colors RGB+alpha channel which can be set in the render Queue. When you import that file into FCP it should retain the alpha channel. If that does not work, you can render the alpha channel seperately in the Queue, just pull down to alpha only. That should render only a B/W QT. This can be imported into FCP and used as a luma matte. if I remember correctly, you place the B/W movie under the color version of the movie. Right click the top color movie go to composite mode and travel matte luma. You would be way better off if you can just embed the alpha with the QT. One way you can check to see if there is an alpha channel is to re-import your render into ae, and then check if the alpha channel is there.

  • Riccardo Zito

    May 22, 2006 at 11:18 pm

    Play out movie>
    In the Output Module settings>Videooutput>Channel: make sure it is set to RGB+Alpha

  • Riccardo Zito

    May 22, 2006 at 11:20 pm

    Thank you bhoneck,
    I am sleep deprived and am doing silly mistakes.
    Viele Grusse,
    Riccardo

  • Wes Plate

    May 23, 2006 at 12:51 am

    And make sure you’re NOT outputting to a DV codec, DV doesn’t support an alpha channel.

    — Wes Plate
    Automatic Duck

  • Sam Moulton

    May 23, 2006 at 3:36 am
  • Jaso Allen

    May 23, 2006 at 3:52 am

    Hi there,

    I had a similar problem a while back. Was making some graphics for a local kids show and when my exports were brought back into FCP there was no way to preserve the transparency.

    I know I was exporting correctly, and the kids were using FCP 3 so I don’t know if there are alpha issues with that release but we could not get FCP to show or recognise the alpha channel. Later versions of FCP worked perfectly, and it just blew my mind trying to figuire out why this was happening. Still don’t know to today.

    Don’t know what my point was. mmm sorry about this.

    Jase

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