• AJA Video Systems

  Gamma pop on play with 444 RGB!!

  Posted by Aaron Neitz on April 9, 2009 at 5:33 pm

  Hey guys, 1st time working 444 RGB with my Kona. Need some guidance!

  I’m getting mild but very noticeable gamma or brightness pops when playing back footage. The pops only happen on the Kona SDI outputs, not in the FCP windows. So it’s darker when the image is paused and it gets brighter when I hit play.

  I’m playing out single link 422 out of my Kona card. Initially I’m wondering if it’s a RGB/YUV conversion issue???

  Also if I play the clip in AJA TV there is no pop. Which probably means there’s an issue in Final Cut.

  Any ideas?

  Thanks in advance!

  Kona 3 6.0.3
  FCP 6.0.5

  Gary Adcock replied 17 years, 5 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Aaron Neitz

  April 9, 2009 at 5:56 pm

  I run to the Cow too quickly.

  I didn’t have the psf23.98 RGBA output set in Final Cut.

  Proof that User Error is often times the culprit 🙂
• 

  Gary Adcock

  April 9, 2009 at 5:57 pm

  [Aaron Neitz] “I’m playing out single link 422 out of my Kona card. Initially I’m wondering if it’s a RGB/YUV conversion issue???

  Also if I play the clip in AJA TV there is no pop. Which probably means there’s an issue in Final Cut. “

  Correct on both issues.

  you would not see a color space jump if you were monitoring in dual link.

  gary adcock
  Studio37
  HD & Film Consultation
  Post and Production Workflows

  Inside look at the IoHD
  https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

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