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Re: Will HDV be a dead format within three years? Not dead but a little ill.

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Peter CorbettRe: Will HDV be a dead format within three years? Not dead but a little ill.
by on Jan 20, 2007 at 1:13:45 am

Hi Ken,

I'm not saying HDV cameras like the V1 are not progressive. It and the XDCAM HD cameras clearly have progressive scan imagers and record progressive images. It's the long-GOP codec underlying the recording of those progressive images that I'm talking about. Complex motion within those progressive images is affected by the long-GOP recording structure. I suppose I'm taking an ultra-purist POV of what a "true" recorded progressive frame is.

With intraframe formats like DVCPROHD and HDCAM each single frame is compressed to tape with no external reference to other frames around it, unlike HDV. The nature of long-GOP processing within those individual HDV frames can produce artifacting that is unique to long-GOP progressive.

So to clarify, my argument is with the description of "true progressive" in the recording sense, and how those progressive frames are recorded to tape, not the actual capturing of them in the CCD/CMOS block. I'm not trying to sound pedantic.

Peter

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


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