• AJA Video Systems

  Three major questions on Dual Linking, Down Convertions, & Codecs

  Posted by Marcus Ionis on July 4, 2005 at 5:41 am

  G5 2.7 GHz
  2.5gigs
  Panther/Tiger
  Kona 2
  K-Box
  Final Cut Pro 5

  I have three major questions for you:

  We have a Panasonic D-5 deck. For “Dual-Linking”, do you need to send two HD-SDI signals to the D-5 deck for output and/or for capturing two HD-SDI signals to the K-box?

  In addition, we have a 601 SDI Standard Def scope. Is there away to view HD (at all of the various frequencies) and down convert thru the “Control Panel” to the scope in realtime?

  Can you please explain further about the “AJA Kona 10-bit Log RGB Codec”
  & the “AJA Kona 10-bit RGB Codec”? Will Final Cut Pro 5 / Kona 2 capture and edit to tape with those codec

  Oliver Peters replied 20 years, 10 months ago 4 Members · 5 Replies
• 5 Replies

• 

  John Ladle

  July 4, 2005 at 6:42 am

  SR2 is the dual link deck and D5 is the single link hd-sdi–correct?

  you can downconvert in real time to analog or HD-sdi, so whatever you are hooked up to would be good in the 601 space.

  i would not worry too much about the log RGB unless you are getting footage from a spirtit telecine, 950, genesis or viper cameras…
• 

  Bob Zelin

  July 4, 2005 at 12:10 pm

  In your Kona 2 Control Panel, simply switch (on the Digital Out tab) the secondary format to 525, instead of 1080, and it will become a downconverted SDI output instead of a second HD-SDI output. Plug the second output into the SDI input of your waveform monitor, and away you go !

  Bob Zelin
• 

  Marcus Ionis

  July 4, 2005 at 7:42 pm

  “you can downconvert in real time to analog or HD-sdi, so whatever you are hooked up to would be good in the 601 space”

  We’ve viewed the downconvert on HD 1080 59.94, 60i ect. on a NTSC Sony monitor and it looked great.
  But when it came to 23.98psf the reference was whacked out. Could not get proper sync.
  Any suggestions???

  Marcus

  Marcus Ionis
• 

  Marcus Ionis

  July 4, 2005 at 7:46 pm

  ” would not worry too much about the log RGB unless you are getting footage from a spirtit telecine, 950, genesis or viper cameras… ”

  so capturing D-5 footage with this codec would be overkill…right??

  Marcus

  Marcus Ionis
• 

  Oliver Peters

  July 5, 2005 at 1:15 pm

  Marcus,

  Capture from the HD-D5 to Kona2 as a single link HDSDI in 10-bit uncompressed for best quality. You might want to offline (if that’s a phase in your post process) at something less first, due to the performance demands of 10-bit. Then recapture and online/conform in 10-bit. Do your drives support this?

  The second output of the Kona2 can feed your scope and can be set to SDI (525).

  If you are working in 23.98, you will either need to get a monitor that handles the 24p frame rates (like a Sony flat panel) or you will need to add 2-3 pulldown to your output (see your settings in FCP). When I’ve done this, only 2-2-2-4 looked right with the DVCProHD codec, but all 3 options should work with uncompressed. This is an issue between FCP versus AJA control of the process as it relates to the codecs and the Kona2 board (per AJA).

  Sincerely,
  Oliver

  Oliver Peters
  Post-Production & Interactive Media
  Orlando, FL
  http://www.oliverpeters.com

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