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Component RBG vs. Component YPrPb on LHe
I’ve just installed my spanking new LHe on my mac pro. Things are looking beautiful, and it’s working great. (No offense to Blackmagic, but it’s a big step up in terms of flexibility and support from my old BM card…)
One question I have for all those more experienced than me is this:
I am previewing work out of FCS, AE, etc. on a Sony PVM-20M2U 20″ production monitor… This monitor accepts both RBG and YPrPb component inputs (I don’t have the SDI card for it). And the kona supports both those outputs. I tried them both, and didn’t see a drastic difference between them, however, I noticed that I had no chroma control on the monitor in RBG…The question is – is one better than another – RBG vs. YPrPb? Is one more accurate, faster (because of no conversion to/from a colorspace) better for grading and etc.? Things felt a bit sharper in RGB, but that might have been my imagination…
I’m primarily working in DVCPROHD, ProRes 422, and XDCAM EX, which I believe are YUV, so would YPrPb be better.
Basically I’m not to color space savvy.. Thanks for the help!
Drew Kimball
Principal
//Braintrust Creative//
braintrustcreative.com -
4 Replies
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The Japanese manufacturers all recognize Y Pb Pr. RGB is over, and has been over for a long time (except for Discreet). Ever since Beta VTR’s, the world (especially for your Sony PVM-20M2U) is Y Pb Pr, and NOT RGB. Y Pb Pr is the same thing as Y, R-Y, B-Y. All modern equipment works this way (especially from Sony, Panasonic, JVC, AVID, etc.).
Bob Zelin
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Bob,
How is HDCAM SR (4:4:4 RGB) typically monitored? Is it converted back to 4:2:2 Y Pb Pr, or monitored as native 4:4:4 RGB? Or does it depend completely on the purpose of the monitoring, i.e. grading or compositing vs. on-set monitoring?
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[Alan Okey] “How is HDCAM SR (4:4:4 RGB) typically monitored?”
Traditionally with a 4:4:4 ( dual link ) capable monitor from companies like Cinetal, ECinema or Astro.
Yes- you can convert to a single link 4:2:2 HDSDI single, but what good is working in RGB and then monitoring in something far less like If you are going to work in 4:4:4 – then bite the bullet for what it takes to work at that level.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Inside look at the IoHD -
Thanks!
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