Australia broadcast luma and chroma limits
updated 8 years ago 2 Members · 4
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Hi there,
Trying to find out what the broadcast safe limits are for luma and chroma in Australia.
Is it different per broadcaster?
Just want the gist:
is it 0-100 on luma
-20 to 130 on chroma?
Mac Pro 2 x 2.4Ghz, 16GB RAM, GTX 660
AFAIK, the main broadcasters in Australia are members of the ITU, so regular Rec.709 levels are what they require.
https://en.wikipedia.org/wiki/Rec._709
https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.709-5-200204-I!!PDF-E.pdf
So I had a read through that document. Didnt discuss DV Pal, rather it was in regards to HD broadcast, but assuming they wish to have the same levels I found this to be what they said.
So assuming I am reading this correctly, the levels for broadcast are not 0-255, but rather 16-235 for luminance.
Could not see what chrominance values are supposed to be?
I have heard to not go over 75% on the vector scope, though would like to know what values that means so I can simply apply the video limiter effect and set it up right.
Mac Pro 2 x 2.4Ghz, 16GB RAM, GTX 660
Ah, didn’t think of SD, but yes 16 – 235 is right.
75% on the chrominance is a decent rule of thumb.
TBH, I would advise against using clippers to set maximum levels without at least setting them roughly right first.
I don’t know which video limit effect you’re using, there are a few and they don’t all set up the same.
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