Hi John,
The better question might be, "Why do it?"
IIRC, you and I both do long-form finishing, mostly for broadcast. I've submitted hundreds of shows to virtually every QC joint in North America and they've never failed a show for illegal color. I never, ever use the 4:2:2 Safe option. I'd be curious what other finishers think, like Ken S. or Terence C., but I think 4:2:2 Safe is a waste of time and storage.
Seth
From: Avid-L2@yahoogroups.com <Avid-L2@yahoogroups.com> on behalf of bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com>
Sent: Thursday, August 25, 2016 12:12 AM
To: Avid-L2@yahoogroups.com
Subject: Re: [Avid-L2] Safe Color doesn't unrender with color correction change etc...?
Sent: Thursday, August 25, 2016 12:12 AM
To: Avid-L2@yahoogroups.com
Subject: Re: [Avid-L2] Safe Color doesn't unrender with color correction change etc...?
I've always checked the 422 safe. Why wouldn't I do this? Here's why from the help menu. I don't try to color correct with it on I add it after I'm done with color and do my main render with it. From Help:
422 Safe Parameter
422 Safe controls how the effect handles chroma sub-sampling when limiting colors, offering a choice between performance and guaranteed accuracy.
When 422 Safe is deselected (the default value), effect processing is fast. However, depending on the image, a small number of transient pixel values might exceed your safe color ranges. When 422 Safe is selected, effect processing is slower, but every pixel in every frame is guaranteed to be within your safe color ranges.
In many situations, you can leave 422 Safe turned off. If you know that every pixel throughout your material must be guaranteed safe, turn 422 Safe on. Alternatively, you can leave 422 Safe turned off while you edit and adjust effects, then turn it on before you render or output your finished sequence to guarantee that every pixel in your output is color safe.
Of course I don't think every pixel is guaranteed safe as I still get errors with the safe color limit. I'm not sure why I wouldn't use it. With file based delivery it's the only way to legalize. Am I mi9ssing something?
Of course I don't think every pixel is guaranteed safe as I still get errors with the safe color limit. I'm not sure why I wouldn't use it. With file based delivery it's the only way to legalize. Am I mi9ssing something?
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Posted by: Seth Isaac Buncher <seth_buncher@hotmail.com>
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this is the Avid-L2
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