(assuming your intended target is youtube)

Applying the “computer to studio” fix to the preview works if your project media is all 0-255.

If you have 16-235 content you don't need to add anything.

Ie. my gopro footage i have to apply levels. 0-255

my iphone footage i do not. 16-235

@LongIslander

"(assuming your intended target is youtube)"

Make your scopes look like this.

What I deliver:

What my camera sees:

@Marco.

What my local broadcasters deliver to my antenna:

ABC

CBS

NBC

As Shakira says: "These scopes don't lie."

@Marco. said:

But a common case is the source levels are 16 up to 255. Without caring for the levels within a proper color correction, if you'd then use a Computer-to-Studio-RGB filter for the output, you'd finally had your reference black set to 32 and probably have raised all the shadow noise up to the visible level.

Yes. Without scopes or an "aware" set of eyes, that would be the baseline outcome. And I agree that case is very common, such as with @john_dennis sample.

So, in deciding on which fallback choice to recommend for uninformed and scopeless editors, we "could" choose to do nothing, resulting in ok blacks and clipped whites on video playback.

Or, we could add the Studio RGB filter at the output, resulting in good highlights and slightly lifted blacks.

WRT this method, farss (Bob) said 'way back in 2011:

I think I now understand what you're trying to do, clue is "failsafe".

Your method is "foolproof" if all someone wants to do is take video from any camera and upload it to YouTube and never get an ugly mess.

I think that's about the closest Bob and I ever got to agreeing on anything.

By either method, and with introducing the notion of informed eyeballing or scopes, it's easy to keep the highlight detail and beef up the blacks a little bit, which I think is what Nick's method implies during the course of editing. The result is the same, contingent of course on the editor's experience, or more often lack of it.

I think the professional advice, "Apply the Computer RGB filter, grade astutely, remove the filter, and render" is full of booby traps for new users.

ABC

I find it's interesting in this case the CG not only allows for white peaks above 235 (100 %) but also black peaks below 16 (0 %).

I'm frequently amazed at what is "allowed" and what is done.

Notice the disturbance the white borders cause on the NBC snapshot. Because I see that with borders (quick color changes) a lot, I included borders in my diabolical render quality measurement test video for High Complexity.

"So, in deciding on which fallback choice to recommend for uninformed and scopeless editors, …"

And finally for these scopeless ones there is that nice zebra fx chain. ;)

At least with digital screens, we don't have to run for the basement shelter every time the picture tears and the cage starts to buzz.

"I'm frequently amazed at what is "allowed" and what is done."

Interesting reading, maybe, even if not meant for the US broadcasting:

EBU R.103

At least with digital screens, we don't have to run for the basement shelter every time the picture tears and the cage starts to buzz.

😁😁😁

Here are Secondary CC Presets very similar to Marco's Hi-Lo Clipping Indicators.

I find them useful for daily work.

👍

I'll read EBU R.103. I read Crime and Punishment.