Boy, am I confused!! at DVinfo.net

Robert Lane · January 7th, 2006, 10:49 AM

I just looked at the HVX Ops manual Jan alerted us to. I'm hoping you guys can help me clarify something:

On page 131 of the manual it lists the recording formats. Under the "DVCPRO HD" list it shows 720P/30PN. However in the notes underneath it says, "The 720P/30PN and 720P/24PN formats are not included in the DVCPRO HD recording format."

Does that mean the "native" version of those formats is not part of the standardized DVCPRO HD format because "native" refers to the specific chips used in the HVX or, that it's not an HD format period? (Naw, that 'cain't be it)

Damn it Jim, I'm not a chipset/camera/format-engineer, I'm a cinemaphotographer!

Anybody have some clarification on this one?

Ram Ganesh · January 7th, 2006, 01:50 PM

did u see the nice graph explaining exactly how and what N is? (page 34)

its simply active frames thats recorded...

Barry Green · January 7th, 2006, 03:02 PM

DVCPRO-HD is a SMPTE-codified standard that operates at 100 megabits, in 720p mode it's always, always 60 frames per second.

In the HVX under "native" mode, it's not always 100 megabits nor 60 frames per second. It's the exact same format, except storing only the frames that are necessary. So it's sort of an extension to the SMPTE-codified DVCPRO-HD format.

January 7th, 2006, 10:49 AM	#1
Robert Lane Go Go Godzilla Join Date: Nov 2004 Location: Mesa, AZ Posts: 2,826 Images: 15	Boy, am I confused!! I just looked at the HVX Ops manual Jan alerted us to. I'm hoping you guys can help me clarify something: On page 131 of the manual it lists the recording formats. Under the "DVCPRO HD" list it shows 720P/30PN. However in the notes underneath it says, "The 720P/30PN and 720P/24PN formats are not included in the DVCPRO HD recording format." Does that mean the "native" version of those formats is not part of the standardized DVCPRO HD format because "native" refers to the specific chips used in the HVX or, that it's not an HD format period? (Naw, that 'cain't be it) Damn it Jim, I'm not a chipset/camera/format-engineer, I'm a cinemaphotographer! Anybody have some clarification on this one?

January 7th, 2006, 01:50 PM	#2
Ram Ganesh Regular Crew Join Date: Mar 2005 Location: Seattle, WA Posts: 175	did u see the nice graph explaining exactly how and what N is? (page 34) its simply active frames thats recorded...

January 7th, 2006, 03:02 PM	#3
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	DVCPRO-HD is a SMPTE-codified standard that operates at 100 megabits, in 720p mode it's always, always 60 frames per second. In the HVX under "native" mode, it's not always 100 megabits nor 60 frames per second. It's the exact same format, except storing only the frames that are necessary. So it's sort of an extension to the SMPTE-codified DVCPRO-HD format.