• Apple Final Cut Pro Legacy

  what “bug” in 10-bit?

  Posted by Bob Cole on May 21, 2007 at 11:57 pm

  Colorist Mike Nichols mentions a FCP “bug” in a Studio Daily video on Color.

  To paraphrase, the bug “doesn’t allow video to be rendered correctly in 10-bit or high precision YUV.”

  Could someone please explain the relevance of this problem? I don’t worry about YUV, but isn’t ProRes 422 10-bit? If this is for real, is this bug present in FCP6?

  — Bob C

  Gary Adcock replied 19 years, 3 months ago 4 Members · 3 Replies
• 3 Replies

• 

  Jeremy Garchow

  May 22, 2007 at 1:38 am

  [Bob Cole] “is this bug present in FCP6? “

  Great question. The bug he is probably referring to is that the footage gets processed in 10 bit or higher, but then final step is then knocked down to 8 bit, and then put it in a 10 bit wrapper so to speak. So, technically it gets rendered in a float color space (32 bit) but then gets knocked down and rounded at the very end to 8 bit, even though the codec is 10 bit. It’s really confusing.

  Jeremy
• 

  Rafael Amador

  May 22, 2007 at 4:06 am

  Yes confusing. For what Graeme Nattress had posted few times in this forum, the problem is not in the 10b code it self, but in the 32b rendering.
  Cheers,
  Rafael
• 

  Gary Adcock

  May 22, 2007 at 12:48 pm

  [Bob Cole] “To paraphrase, the bug “doesn’t allow video to be rendered correctly in 10-bit or high precision YUV.”Could someone please explain the relevance of this problem? I don’t worry about YUV”

  if you are working in video you had better be worried about the YUV color space- thats all that video uses.

  if you never ran into it – you do not need to worry about it, but you can search the FCP forum for the thread about 3 months ago.

  gary adcock
  Studio37
  HD & Film Consultation
  Post and Production Workflows

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