RGB 4:4:4 in FCP

[Gary Adcock]

[Rafael Amador] “You sound like a politician: You just talk, talk, talk: “
you go right ahead and cover your ass by calling me names it does not change the facts.

[Rafael Amador] “I”M NOT LOOKING FOR ANY COLOR ISSUE THIS IS WHY I WORK IN B&W. “

Explain how can this possible a discussion on 10bit 4:4:4 RGB files?
Your title says this is about 4:4:4 RGB, but your own words on testing only a luma ramp created in one of the applications show that you do not have a proper methodology or workflow to understand how to test.

Any testing done using a file with ZERO Chroma levels, is in no way a legitimate test for a full bandwidth conversions in 4:4:4, since with out the pertinent color information the data reveals nothing regarding the color or bit depth

[Rafael Amador] “You insult me when you suggest that I’ve been using a 8b Cinema display to do my tests. I wouldn’t be that stupid Gary.
I’ve stated that I’ve been monitoring in 10b YUV in a CRT professional monitor. “

So how are you monitoring the RGB as 4:4:4 as discussed here? there is no 10bit RGB over single link and no preview of the color space we are talking about- how are you viewing the tests?

you cannot properly judge issues with 10bit content on an 8 bit display
you cannot properly judge 10bit RGB over single link HDSDI on a YUV display
you cannot properly determine if your testing is accurate if you do not have external tools (software or hardware) to properly test your outcome.

[Rafael Amador] “I’ve asked Graeme Nattress about my theory.
He said that shouldn’t be no problem in cutting 10b RGB footage in FC, and exporting keeping the fool picture quality”

What part of a definitive “YES” is there is the comment of “shouldn’t be a problem” I have NEVER said FCP could not do 10bit RGB, I do it all the time, I said that your workflow is a sham, and without the proper tools no way to deliver to a client. – My clients do not accept files, they want a tape.

lastly
I said that your setup and method for testing was inaccurate and you were giving out erroneous and mis-leading information that FCP could handle RGB data without the proper hardware to handle the task, hardware which I believe that you do hot have and probably do not even have access too, even to test with?

I do these types of workflows on a daily basis, you on the other hand do not from you own admission.
But you will still call me out, tell me that based on your flawed testing that you should be able to handle RGB files in FCP, even though you do not possess any of the tools or have any REAL need to be working in RGB.

There is theory and there is reality, you seem to be between them both.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

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[Rafael Amador]

Hi,
Without any aim for further discussions (just landed in Spain), and to whom it may concern, at my request, Owen Smithyman (BitJazz Inc.) made some test comparing a 10b RGB file before and after export from FC (Current setting/no rendering).
His answer to my question was:

“The test that ended up giving me a usable answer was opening up the original and exported files in Dumpster, which lets you see the size in bytes of each frame. It turns out that the answer is YES! Importing a 10-bit RGB clip and then exporting same as source gives you the same output with no loss.
Cheers,
rafael

http://www.nagavideo.com

[Walter Biscardi]

This really doesn’t prove much of anything as far as a practical 4:4:4 workflow as in capturing 4:4:4 material, editing with it, and mastering back out to 4:4:4. All this test is doing is creating a file in Shake, moving it to FCP and then checking the two files.

To do proper testing you need actual 4:4:4 material ingested via something like an AJA Kona 3 and then testing the workflow with that footage, as Gary Adcock has done time and time again. If you need answers on the 4:4:4 workflow and FCP, then Gary is the person to talk to.

Walter Biscardi, Jr.
Editor, Colorist, Director, Writer, Consultant, Author.
Credits include multiple Emmy, Telly, Aurora and Peabody Awards.
Biscardi Creative Media

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[Gary Adcock]

[walter biscardi] “If you need answers on the 4:4:4 workflow and FCP, then Gary is the person to talk to.”

I thank you for the kind words.

It always get down to who you trust when get the advice from different sources over the net.

someone that actually delivers 4:4:4 / RGB content on a weekly basis.
or advice from someone (by their own admission) that has never done a 4:4:4 / RGB project end to end.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Check out
https://www.aja.com/kiprotour/

Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php