• Apple Final Cut Pro Legacy

  Alpha Channel Issue FC 6

  Posted by Jekabs on June 7, 2007 at 10:31 am

  Hello.

  I have just updated my

  Intel Xeon 2x3GhZ Dual Core
  6 GB RAM
  Black Magic Multibridge Extreme

  to final cut studio 2.

  and I found out following issue:

  when i add a filter (Flicker Filter or Collor Correction filter or a drop shadow) to a movie with aplha channel, it (alpha channel) dissapears and where it should be transparent – it stays black.

  Jekabs

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

• 

  Rafael Amador

  June 7, 2007 at 10:56 am

  Hi Jekabs,
  I haven’t see that in FC, but there is an issue when aplying effects to movies with Alpha.
  In AE and Shake if you want to CC a picture with Premultiplied Alpha, you must to de-Multiply the clip before to apply the filter, otherwise the effect affect the Alpha channel too.
  I don’t know if is the same issue. What kind of Alpha it got your pictures?
  Cheers,
  rafael
• 

  Jekabs

  June 7, 2007 at 11:23 am

  No, i think there is another kind of issue.

  I am using movies with black alpha channel (like always). But in FC 5 there wasn’t any problems when applying, for example – flicker filter or adding a drop shadow to movie. But now there is a problem. As i said in previous post – alpha channel dissapears (stays black where it should be transparent) when I add a drop shadow (not filter, but in movie controls) or any other filter.

  Jekabs
• 

  Tom Wolsky

  June 7, 2007 at 3:24 pm

  Please be specific on the material you’re using and the settings you’re using. This may be specific to your hardware and media you’re working in.

  All the best,

  Tom

  Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 2 Editing Workshop” Class on Demand “Complete Training for FCP5” and “Final Cut Express Made Easy” DVDs

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