Ultimate Kona 3 System

[Daxbedell]

Understood. I know that the actual GY-HD250U cameras have HD-SDI output, but so far I don’t see a corresponding deck from JVC that also has HD-SDI. I am not opposed to using an AJA converter to get the component out to HD-SDI, but I don’t see that it supports 720 24p, which we definitely need out of the decks. I know there are some HDV to HD-SDI converters that might work but I have not really researched it thoroughly. Thanks for all your help on this. I just want to make the right decision up front.

[Bob Zelin]

Dax – when you work with products like the JVC-BRHD50, even if you shoot at 23.98, you will input to your system at 59.94, not 23.98. These products do not work at 23.98 (it still looks like film when the VTR converts to 59.94). The AJA HD10A, and AJA HD10AVA are used EVERY DAY to simply convert products like the BR-HD50, and the Sony HVRM25U into HD-SDI signals.

If this is unacceptable to you (because you don’t like these little converter boxes for some reason) – wait for the Sony HVR-1500 professional HDV VTR to come out. You will be EXTREEMLY UNHAPPY if you attempt to do all of this with firewire at a professional TV station.

Any dealer that you are dealing with should be knowlegeable about all of these products, and the process. You can get easily screwed if your dealer does not know what these products can and cannot do.

bob Zelin

[Walter Biscardi]

[DaxBedell] “I am not opposed to using an AJA converter to get the component out to HD-SDI, but I don’t see that it supports 720 24p, which we definitely need out of the decks.”

As far as I know it does. All it’s doing is taking the component signal and converting it to SDI. I don’t think it has anything to do with frame rates.

Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”

“I reject your reality and substitute my own!” – Adam Savage, Mythbusters

[Daxbedell]

Ahhh! I see.. I did not know that it only edits in 59.94. I think then that getting the little Aja converters will be fine. But riddle me this… to mix this footage with 24p HDCAM footage, does the Kona 3 remove the pulldown on capture or add pulldown to the HDCAM footage? THanks for all the help.

Bob, would you mind contacting me in the real world. I would like to get all these little issues ironed out and talk about getting a quote from you. 813-254-9338 x2278 Thanks.

Dax Bedell
WEDU-TV Tampa, FL

[Gary Adcock]

[DaxBedell] “I am not opposed to using an AJA converter to get the component out to HD-SDI, but I don’t see that it supports 720 24p, which we definitely need out of the decks.”

The smpte spec for video steam is always 60p.
The Kona card, the converters and the deck all see it as 24/60 (which is 23.98 over 59.94) with the pulldown added.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

[Bob Zelin]

Dax –
I will contact you directly. To answer your question, when you use HDCam, and you shoot at 23.98 (only George Lucas shoots at 24), the Sony VTR (like the JH-3 or HDW-F500) will do a 2:3 pulldown on the 23.98 material, to enter it into your edit system at 59.94, so you can edit at a normal frame rate. If you own a Sony HDW-M2000 or HDW-S280, there is no 2:3 pulldown, so you would have to edit at 23.98, and then output from the Kona (using a menu in the audio video settings), so you could output at 29.97. We have found this to be inconvenient for customers, and the “quickie” solution is to put a Cobalt Digital 8021 converter (about $3000) at the output of the HDW-M2000, to do a hardware 2:3 pulldown, so you can input at 59.94. Again, if you work with the inexpensive JH-3 player, it has the pulldown converter built in. All Panasonic VTR’s have 2:3 pulldown converters in them.

Talk to you in person on Monday.

bob Zelin