ProRes 4444 signal is YUV-10bit through KONA 3

[Rafael Amador]

Hi Rudy,
Prores in all his flavors is YUV (Y’CbCr).
No problem for FC processing in 10b YUV/

The 10b RGB codec that you may have available is the AJA 10b RGB.
You may cut this footage in FC, but not process it. FC can not render in 10b RGB.
Rafael

http://www.nagavideo.com

[Rudy Lopez]

??????

Ok, according to FCP 7 documentation,

The Apple ProRes format supports the following digital video signals:
RGB
4:2:2 Y′CBCR
4:4:4 Y′CBCR

And yes, I was testing using AJA 10 bit RGB codec footage. FCP cannot render in RGB 10 bit? Then why when I do render video using the AJA RGB codec does the Kona 3 see a 10-b RGB signal in the frame buffer?

Where is this information that FC cannot render in RGB 10 bit come from, the manual?

Thanks

[Arnie Schlissel]

ProRes 4444 can be either RGB or YUV. If you only have YUV, open up your ,b>Audio Visual Preferences, click on the Capture Settings tab, make a duplicate of the capture setting and change the digitizer from YUV to RGB.

Arnie
Post production is not an afterthought!
https://www.arniepix.com/

[Rafael Amador]

[Arnie Schlissel] “ProRes 4444 can be either RGB or YUV.”
You are right Arnie. The 444 can be both YUB and RGB.
rafael

http://www.nagavideo.com

[Rafael Amador]

[Rudy Lopez] “And yes, I was testing using AJA 10 bit RGB codec footage”
AJA 10b RGB is Uncompress. Heavy weight. I think that you need two channels HD/SD-SDI to capture that.

[Rudy Lopez] “FCP cannot render in RGB 10 bit?”
Unless have been implemented in FC 7, no. Just have a look to the render options in a any Sequence Settings. You have 8 and “High Precision” (32b Floating Point) YUV rendering options. For RGB you have only 8b.

In FC you can only cut the footage. If you render it will be crunched to 8b.
Rafael

http://www.nagavideo.com

[Gary Adcock]

[Rafael Amador] “Prores in all his flavors is YUV (Y’CbCr).
No problem for FC processing in 10b YUV/ “

Rafael.
if you do not know what you are talking about -do not answer the question like you do.

from page 19 of the july 2009 ProRes white paper

Apple ProRes 4444 Alpha Channel Support
In addition to supporting Y’CBCR or RGB 4:4:4 pixel data, the new Apple ProRes 4444
codec type optionally supports an alpha channel. The sampling nomenclature for
such Y’CBCRA or RGBA images is 4:4:4:4, to indicate that for each pixel location, there
is an alpha – or A – value in addition to the three Y’CBCR or RGB values. An alpha
value specifies the proportion of its associated RGB or Y’CBCR pixel that should be
blended with the pixel at the corresponding location of a background image, creating
the effect of varying transparency for use in compositing workflows.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL

https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Gary Adcock]

[Rudy Lopez] “And yes, I was testing using AJA 10 bit RGB codec footage. FCP cannot render in RGB 10 bit? Then why when I do render video using the AJA RGB codec does the Kona 3 see a 10-b RGB signal in the frame buffer? “

Rudy

I am sure that this was a capture error but lets look at a couple of things first.

are you using the 7.0 driver from AJA?
Did you update the firmware on the K3 when you installed the 7.0 driver (the 6.5driver’s easy setup to capture ProRes 444 at 1080 23.98 was incorrect)

Did you select the default ProRes 4444 setting (which is YCrCb) or did you create an RGB setting based on those setups.

the Incoming RGB signal does not change the capture settings to RGB on the fly- you need to do it manually.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL

https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Rafael Amador]

Gary,
If you wouldn’t read so fast you would see that I’ve corrected my mistake.
rafael

http://www.nagavideo.com

[Gary Adcock]

[Rafael Amador] “If you wouldn’t read so fast you would see that I’ve corrected my mistake. “

You do not work with Dual Link capture and I do not believe that you have a K3 card how much assistance can you be to someone asking a technical question that you have never run across.

Why consistently jump in on subjects you are not versed in?

and Yes I did note you corrected your mistake.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL

https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Rafael Amador]

[gary adcock] “You do not work with Dual Link capture and I do not believe that you have a K3 “
No yet. Hopefully by the end of the year.
And sorry for my intromission in such deep technical discussion.
I forgot you are the only person around qualified to talk about 444 workflow.
Cheers,
rafael

http://www.nagavideo.com