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  • Adobe After Effects

    Safe colours for HDTV broadcast

    Posted by Jan Vork on March 21, 2013 at 9:26 am

    Hi,

    For 8bit PAL, RGB values from 16-235 are safe for broadcast.
    Does anyone know these values for 16bit HD?

    There are some standards:
    ITU-R Recommendation BT.709-5
    R103-2000

    but both seem to live in the analog domain, talking about microvolts and ranges from -1% to 105%.

    What I would like to have and spread is the digital safe values for 16bit (full range = 0 – 32768).

    Thanks a lot!
    Jan Vork
    (Jaydude)

    http://www.jaydude.nl

    Jan Vork replied 13 years, 1 month ago 46,370 Members · 1 Reply
  • 1 Reply

  • Jan Vork

    March 21, 2013 at 4:01 pm

    Thanks for your solution, Dave!

    I was wondering if there are other values around. I can imagine that digital HD is somewhat more tolerant than analog PAL…

    Found this clipping indicator solution:
    https://joshuamosley.com/tutorials/AfterEffectsColorSafeHD/

    It’s for SD, but seems to work for HD as well.
    Still not very satisfying. I want values to put in an Adjustmentlayer, or an AE-plug that works for HD.

    What about AE’s color settings? When I set my profile to 709, the output is visually less extreme, but the ‘clipping indicator’ still tells that the whites are illigal…

    Why is this such a mystery?

    http://www.jaydude.nl

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