• Adobe Premiere Pro

  Can effects be applied to clip with straight alpha?

  Posted by Toke on May 7, 2008 at 2:48 pm

  When I try this I just get white clip.
  I don’t want to use premultiplied alpha because it messes semitransparent areas to black.
  Is there a workaround or should I just forget alpha with pPro?

  Toke replied 17 years, 12 months ago 2 Members · 3 Replies
• 3 Replies

• 

  Randy Mcwilson

  May 8, 2008 at 9:43 pm

  Can you give us more info? Your post did not seem complete.

  I use alpha channeled footage in PPro all of the time, no real problems.

  Eternity…don’t miss it for the world.
• 

  Toke

  May 8, 2008 at 10:28 pm

  Found a solution.
  Problem was that I was using 10-bit RGB codecs (SheerVideo & AJA) and pPro doesn’t seem to like them. Straight alpha with SV’s 10bit4:2:2 seems to be ok…
• 

  Toke

  May 8, 2008 at 11:28 pm

  Seems to be that pPro (I’m on a Mac) doesn’t either support any 10-bit YCbCr codecs neither…

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