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Re: 444 Codec & Video Processing

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gary adcock
Re: 444 Codec & Video Processing
on Apr 2, 2010 at 12:25:00 am

[Rivai Chen] "There's no way that we can set 444 color space in FCP. You either have YUV 10bit high precision or RGB 8 bit. "

Not true, with hardware having Dual Link support and a little concentrated effort, you can do 444 as either Y'Cb'Cr' or RGB . It is not a simply choosing a setting, you have to setup and tune the workflow much like you would on any of the big iron finishing suites. (Avid and Autodesk both use OEM Kona cards for output on their high end hardware)

"So let's you are working with 444 codec in the timeline and you need to render out to 444 codec or DPX (gluetools). Wont it affect the quality ? or not ?"

That answer would depend on what the original content started- DPX from a DDR or Filmscan? or something you whipped up in Motion. For the record the ProRes 4444 codec supports both RGB and Y"Cb'Cr' Video color spaces at up to 12 bit with alpha channel support up to 16bit.

FCP does not have the ability to correctly create DPX frames by itslself- and understand Color does not just pop DPX from random timelines out correctly and never has.
Other applications will be doing the creation and output for this type of workflow Correct?
why else would you do via the DPX way then?

Can it be done, Yes.
I work on systems everyday that can handle the task, but it is not cheap and only 'kinda" easy after the 4th or 5th time you change hardware configs. Its much easier to do if you integrate it into an established workflow, not as good as being a standalone player when you are outputting 444 but there are tools.

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

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