I do it because it's more thorough as the help file indicates. Also I don't render the sequence I render the safe color limit. This acts like an intelligent video mixdown if you will. With the relational color it helps me see when I go back and tweak color all the spots I've effected based on where I see partial unrenders. This is particularly useful to avoid the occasional miss named clip that is inheriting the wrong relational color.
This probably sounds like it's more complicated than it really is. I finish color only rendering what might prove to be tricky areas or tracked blurs that sometimes get wonky down the line if not rendered. Then I render safe color track breaking of the effect into approx. minute long chunks. Once that is all rendered later on if I tweak color there is a break in the safe color render everywhere the change has been applied in the symphony's relational style based on clip name. Even if I don't tweak color if I see unrendered areas in the safe color limit it raises a flag that I better check and see what happened to cause the unrender. It's not as permanent as a video mixdown but for the reasons I just listed it is of value to me. The render is pretty painless too. When we first moved to HD it seemed to take much longer to render safe color but now not so bad. In the 4K world ir really cuts down on the export time once the safe color is rendered.
I learned to use the 422 check box back when I was working with Terry so I've never felt like not checking it. Once I lost the legalizers to file based delivery it's the best catch all I've found. I can definitely see scope alarms when I don't use it even with a basic 16-235 clip on every color correction. The 422 is what I feel catches more of the specular errors. Safe color limit is in no way perfect but it's the only practical tool I have to legalize the final sequence.
I think most QC doesn't scrutinize gamut errors that my scope will see but I've not been flagged in QC for that in a long time if ever.
---In Avid-L2@yahoogroups.com, <seth_buncher@...> wrote :
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.
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:
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?
Posted by: bigfish@pacbell.net
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