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Broadcast-safe colors applied, tape still rejected
Hi everyone,
I’m working on some pieces for a TV show and I’ve applied broadcast safe limits using an adjustment layer with Levels at 16 black in/output and 235 white in/output, but the file we sent was rejected by the station, claiming there’s “chroma saturation”.
Their specifications say the maximum must be 100 IRE; I’ve put a Broadcast Colors effect after Levels with 100 IRE as Maximum Signal and the whole image is keyed out as unsafe! White output must be at 145 to avoid this, and the image looks just too dark that way…
I tried using the default IRE value (110) and I just had to do some fine adjustments.
Still, I thought those IRE values were for analog tapes… isn’t that right?Sorry for my ignorance, these issues are completely new to me.
Thanks!
PS: The footage is in HDV 1440×1920 with 1.33 aspect ratio.
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2 Replies
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Thank you for your answer Dave.
Doing too visible modifications to the comp colors is a bit difficult, as the pieces are already approved. I’ve used a lot of blending modes and stacked layers, which is probably what’s causing the illegal colors, but that effect was the main idea for the comps…
I’ll go check some tutorials of Color Finesse. What I’m not understanding though is if the problem is the addition between R, G and/or B that generates the illegal colors, or is it the fact that maybe at some point the individual values of a color goes over 235? Again, sorry for the ignorance, this is new territory to me.
Thanks!
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actually broadcast colors would need to be layered as two effects, one as luminance, the other as saturation.
also, color finesse has a smart limiter that smoothly transitions to safe without a chop block method. Also, a master reduction in saturation might end up looking washed out. If you are going for the manual method, at least create a luma transfer matte for the color so it reduces the saturation geometrically.
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