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NBC Universal deliver ?
Getting elements ready for delivery to NBCU and their spec sheet lists this,
Channel 1-6 in 5.1 Channel 07 LT +12dB (PL2) Channel 08 RT + 12dB (PL2) Channel 09 M&E LT +12dB (PL2) (Fully Filled) Channel 10 M&E RT +12dB (PL2) (Fully Filled) Channel 11 LT +20dB (PL2) Channel 12 RT +20dB (PL2) Can someone tell me what the +12 and +20 refers to? I am assuming 0dB on the meter is -20dB. I see someone else asked this question many years ago and the answer was these are peak levels, but this does not make sense to me, why would they want a peak of +12 wasting 8dB of headroom? If it is peak levels do I just lower the whole mix for the +20 or should it be remixed so peak hits the target and the mix still sounds correct at 85dB? My understanding is they should be giving loudness and peak values. Thanks in advance. Last edited by mj66; 02-25-2021 at 08:59 PM. |
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Delivering a feature to NBC Universal +12dB & +20dB
Sorry double post
Last edited by mj66; 02-25-2021 at 08:05 PM. |
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Re: Delivering a feature to NBC Universal +12dB & +20dB
Hi MJ, two posts below yours is this thread discussing this same question:
https://duc.avid.com/showthread.php?t=414059 The +20 is your full-range theatrical mix, and the +12 is limited to -8db (+12 over reference level) The limited mix allows them to bring it up to broadcast standards on their side. As I recommended in the other thread, it's always good though to have a call with the distributor and chat over deliverables to make sure that is what they are expecting and just make sure everything is clear on the spec sheet. It's always a good idea to have a conversation with someone on the other side just to make sure! |
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Re: Delivering a feature to NBC Universal +12dB & +20dB
It would be interesting to know where all this is coming from.
It goes totally against ATSC and EBU guidelines for broadcast. I thought we finally had a standard to mix to that worked and now the goalposts are being moved again. I would question it, as I did and suggest a loudness based mix.
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Re: Delivering a feature to NBC Universal +12dB & +20dB
Thanks Leverson, I saw your post and I think you have it right! I copied my response in the thread you mentioned and am posting it here so it can be found by others searching on this topic.
Doing research and looking at the mix on the Universal Logo it looks like Leverson is completely correct, they want the loudness level (Dialog) to be the same as the original mix but limiting the peaks so the whole dynamic range is limited and will not go over -8dB. I can see this on the universal logo mix, the basic levels on the +20 and +12 were the same but the peaks were clipped a bit on the +12 mix. Quote:
Quote:
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