• AJA Video Systems

  Downconvert Quality

  Posted by Peter Corbett on February 19, 2007 at 4:13 am

  Just curious as to what the downconversion quality is like on the Xena LHe card. I know AJA make great stand-alone convertors but I’m just curious at seeing if Xena might be a better solution for integrating HD source material into a SD workflow.

  Specifically, what is the aliasing like? Is it comparable to say the downconverted output of DVCPROHD deck?

  Thanks in advance.
  Peter

  Peter Corbett
  Powerhouse Productions
  http://www.php.com.au

  Peter Corbett replied 19 years, 2 months ago 4 Members · 11 Replies
• 11 Replies

• 

  Tim Kolb

  February 19, 2007 at 4:38 am

  I haven’t had a lot of experience with DVC ProHD RT downconversions…but I’ve been impressed with my LH’s quality in that respect when I’ve had a need for it.

  TimK,
  Director,
  Kolb Productions,

  Creative Cow Host,
  Author/Trainer
  http://www.focalpress.com
  http://www.classondemand.net
• 

  Peter Corbett

  February 19, 2007 at 10:07 pm

  Thanks Tim, I notice AJA describe the Xena 2K as providing “broadcast-quality downconversion”, but the LHe doesn’t have the “broadcast” description in it’s downconversion capabilities. I wonder if this means it is less than ideal?

  Peter

  Peter Corbett
  Powerhouse Productions
  http://www.php.com.au
• 

  Thad_h

  February 20, 2007 at 2:24 am

  Peter,

  the Xena LH/LHe cards also do down conversion using hardware broadcast quality. This is an unfortunate communication mistake that we’ll be sure to clarify. Thanks for pointing it out.

  AJA Xena Support
• 

  Peter Corbett

  February 20, 2007 at 9:20 pm

  Many thanks for the reply. But how in your opinion does the aliasing and general downconverted quality look compared to that coming out of a HDCAM or DVCPROHD deck?

  Peter

  Peter Corbett
  Powerhouse Productions
  http://www.php.com.au
• 

  Thad_h

  February 20, 2007 at 10:23 pm

  Peter,

  Im quite certain you’ll be pleased with the quality of the downconversion. I would be fairly surprised if you could tell the difference between the downconvert from Xena LH, and the downconvert from a high end deck.

  AJA Xena Support
• 

  Peter Corbett

  February 20, 2007 at 10:28 pm

  Great! That’s all I wanted to hear.

  Cheers,
  Peter

  Peter Corbett
  Powerhouse Productions
  http://www.php.com.au
• 

  Tim Kolb

  February 20, 2007 at 11:09 pm

  [Peter Corbett] “Great! That’s all I wanted to hear.”

  Me too… 🙂

  Seriously, I think this may be one of the AJA cards’ sweetest spots…at least from what else I’ve personally seen out there.

  TimK,
  Director,
  Kolb Productions,

  Creative Cow Host,
  Author/Trainer
  http://www.focalpress.com
  http://www.classondemand.net
• 

  Rededitor

  February 21, 2007 at 8:26 am

  We use our LH card for HDCAM downconversions to SDI for commercial broadcast playback – in a word “beautiful”.

  Cheers
  RED
• 

  Peter Corbett

  February 21, 2007 at 10:27 am

  Nice to get another good opinion, Red.

  Cheers,
  Peter

  Peter Corbett
  Powerhouse Productions
  http://www.php.com.au
• 

  Tim Kolb

  February 21, 2007 at 2:37 pm

  [Peter Corbett] “Nice to get another good opinion, Red.”

  Yes, I suppose that having my noggin in the header makes me appear a little biased…

  🙂

  TimK,
  Director,
  Kolb Productions,

  Creative Cow Host,
  Author/Trainer
  http://www.focalpress.com
  http://www.classondemand.net

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