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Can a the Kona LH do 4:4:4 HD?
Posted by Hopalongmedia on July 14, 2006 at 10:33 pmOk, this may be a stupid question, but can the Kona LH do uncompressed HD at 4:4:4. We have one that we use primarily for editing DVCPROHD off of P2 cards, and I was under the impression that it did uncompressed 4:4:4. We are renting a F950 and I was going to capture uncompresed out of it into the Kona via HDSDI, but the guy at the rental house is telling me that the input has to be Dual Link to be 4:4:4.
Frankly, I’m not terribly concerned if it’s 4:2:2 or 4:4:4, but I would like to know what I’m talking about, and this is my first forray into High end HD.
Thanks in advance for straightening me out.
David
Mike Schuyler replied 19 years, 9 months ago 9 Members · 12 Replies -
12 Replies
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Walter Biscardi
July 15, 2006 at 12:05 amNo. 4:4:4 required Dual Link (2 SDI) for input and only the Kona 2 and Kona 3 have this.
Walter Biscardi, Jr.
https://www.biscardicreative.com“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
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Gary Adcock
July 15, 2006 at 12:21 am[walter biscardi] “No. 4:4:4 required Dual Link (2 SDI) for input and only the Kona 2 and Kona 3 have this.”
and you are going to need to get the fastest array possible -DL video is over 200 mgs a second with audio.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Chicago, IL -
Walter Biscardi
July 15, 2006 at 1:49 am[hopalongmedia] “I assume a Lacie 1.25 S2S won’t handle this.”
A single unit will not handle Uncompressed HD period. Two of them striped together running in JBOD mode can support up to 390MB/s so two of them should support 4:4:4 in that mode.
I’m looking at two 2.5TB units to replace our current fibre channel array.
Walter Biscardi, Jr.
https://www.biscardicreative.com“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
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Bob Zelin
July 15, 2006 at 1:27 pmMr. Hopalong –
let me make this clear – a single Apple XServe RAID with 14 drives stripped RAID 50 is NOT fast enough to handle the bandwidth for 4:4:4. I am not sure what your application is, but almost everyone accepts material from the Sony HDW-F500 or HDW-M2000 VTR’s from Sony (or the JH-3 !), all which are 4:2:2, and all which require a “normal bandwidth” with “normal storage” – like a loaded array from Medea, HUGE or Apple. If you are renting a Sony SR-5500 or SR-5000 then you will be working with 4:4:4, and you will require a Kona 2 or Kona 3, along with a ton of storage.Please remember (as far as “quality”) that the AVID Adrenaline HD or AVID Nitris cannot do 4:4:4, so are you sure that your requirements are for 4:4:4 delivery ? Who is asking for this ? George Lucas ?
Bob Zelin
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Bob Zelin
July 15, 2006 at 1:31 pmFrom the Sony site on the 950 –
The HDC-F950 provides full-bandwidth digital 4:4:4 high-definition Red, Green, and Blue signal processing and output capability, offering superb picture quality for today’s digital motion picture productions. These full-bandwidth R, G and B signals can be directly connected to a recording system, such as the SRW-5000, or they can be digitally transmitted to the new HDCU-F950 camera control unit via a single optical fiber cable.
SO, you better be ready to rent one hell of an expensive VTR to play back your tapes into your Kona, and you BETTER be charging your client LOTS OF MONEY for this expensive rental.
Bob Zelin
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Tony
July 15, 2006 at 5:45 pmYou should be recording to the SRW-1 portable HDCAM SR or SRW-5000 vtr if using the F950 in RGB 4:4:4 mode.
Unless you have the proper hard drive raid and capture card to handle dual link 4:4:4 your setup will crash and burn.
If this is your first time out with high end HD I recommend avoid all the headaches of capturing to an FCP system which is not the most ideal method for capturing in the field and instead record to HDCAM SR tape.
Another very important consideration is to hire an experienced qualified video engineer/DIT to oversee and run the camera and vtr.
Don’t try to cheap out on not hiring the proper manpower who understands and knows the gear best or you will be setting yourself up for failure.
Tony Salgado
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Ramona Howard
July 15, 2006 at 5:51 pmBob,
George is not the only one doing 4:4:4, it’s pretty much the standard everyone is pushing towards and has been used on many projects both feature and Indie and even much of what you will be seeing on TV will originate with 4:4:4. There is tons of hardware out there that can handle the thruput and at various prices and on every platform. The workflow on the otherhand is what will be the trick for newbies as you have already stated some apps don’t handle it but then there is always the option to conform :).
For those just starting in HD, 4:4:4 is probably not for them but we have certainly seen our share of studios make the jump straight from SD to 4:4:4 and do it cost effectively.
So although George started this push, he certainly isn’t the only one out there doing it.
Cheers,
Ramona -
Richard Dee
July 15, 2006 at 7:12 pmAnother aspect of the quest for best quality – is FCP still internally only 8 bit?
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Ramona Howard
July 15, 2006 at 7:15 pmClarification:
Much of what you see on TV, that is the high-end stuff…..
Many shows have been shooting HD for sometime now and are making the push to the “SR” format and or making the push from film to SR. It will nice to see as they make this push others will be forced to do at least HD, making the tele a bit nicer to watch. This SD to HD uprez crap is making me ill……
Ramona
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