• Blackmagic Design

  8 Bit vs. 10 Bit HD 4:2:2

  Posted by Kai Whittaker on February 22, 2006 at 4:59 pm

  Hello,

  I am about to begin onlining a series of videos shot on Sony HDCAM (not SR). I’m using a 4 Gigabit Fibrechannel RAID setup with a 1.25 TB HUGE SYSTEMS HD (The single channel version). I have about an hour of video to online.

  I have 2 questions..

  What is the quality difference between the 8-Bit Uncompressed 4:2:2 1080i codec (YUV) and the 10-Bit Uncompressed 4:2:2 1080i codec (YUV)? I’ve read that on HDCAM tape, everything is stored at 8 bit, but that it can come out via SDI at 10 bit. I also read that the 10-bit takes an additional 60 MB per second of disk space. Does it really make a difference in quality?

  The second question is for anyone who has experience with online video at these resolutions. My BMD Disk speed test results show i can read 10 Bit YUV 4:2:2 at 53 frames per second and write at 49 fps. I’ll be doing a test soon to see if those are accurate but it seems like I should have no trouble digitizing and outputting my videos at 10 bit uncompressed 4:2:2. Any feedback would be much appreciated.

  Thanks!

  Kai

  Kai Whittaker replied 20 years, 2 months ago 1 Member · 0 Replies
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