Film-Tech Forum ARCHIVE: What format is digital cinema

This is topic What format is digital cinema in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Louis Belloisy (Member # 3836) on 03-08-2011, 03:09 PM:

I know it sounds like a silly question, however an old film guy would like to know what video format is used for digital cinema?

Thanks,

Louis

Posted by Michael Brown (Member # 890) on 03-08-2011, 03:49 PM:

Video is JPEG 2000 with PCM Audio.

Posted by Louis Belloisy (Member # 3836) on 03-08-2011, 03:58 PM:

Thanks Mike, thats what I thought but was not sure.

appreciate the reply.

louis

Posted by Frank Angel (Member # 248) on 03-09-2011, 01:06 AM:

Here's another one, just for the halibut -- does D-Cineman have a VGA designation code like all the other video ratios and resolutions? As in: SVGA XGA WXGA SXGA WSXGA UXGA WUXGA, etc., etc., etc.

Posted by Steve Guttag (Member # 268) on 03-09-2011, 08:24 AM:

Not to the best of my knowledge. DCinema's ratio is 2K...the other codes refer to computer resolutions. The GA part of each being a "Graphics Adapter." CGA (Color), EGA (Extended)...and on and on. They are having trouble with the naming schemes with those anyway. WXGA could mean 1280 x 800, 1280x768, 1366x768 and 1366x800. In my opinion, the 800 versions should not be WXGA since the XGA ratio is 1024x768. The "Wide" version is 1366x768. The 800s are an outgrowth of 800x600 SVGA (Suuuuper VGA).

I don't know if they have gone beyond WUGA or 1920x1200 in their naming schemes.

Then there is Apple...which doesn't conform to any of that though they do have accommodation resolutions...if you MUST.

-Steve

Posted by Aaron Garman (Member # 1653) on 03-09-2011, 10:02 AM:

Maybe they should just call it 1080p+. [evil]

AJG

Posted by Bobby Henderson (Member # 840) on 03-09-2011, 10:39 AM:

quote: Michael Brown
Video is JPEG 2000 with PCM Audio.

JPEG 2000 isn't really a video format. The d-cinema movie file(s) are a container holding thousands of JPEG 2000 compressed still images.

quote: Steve Guttag
I don't know if they have gone beyond WUGA or 1920x1200 in their naming schemes.

Here's a list of acronyms and numerical resolution listings for high resolution displays either produced or at least established on paper:

WSXGA+ = 1680 X 1050 - common to mid size 16:10 LCD computer monitors

UXGA = 1600 X 1200 - common to 19" X 21" CRT monitors

1080 HD = 1920 X 1080 - new high resolution computer monitors are shifting here to match HDTV aspect ratio and resolution.

WUXGA = 1920 X 1200 - common to large 16:10 LCD computer monitors

2K = 2048 X 1080 - 2K digital cinema

QXGA = 2048 X 1536 - top resolution of some 21" CRT monitors

WQXGA = 2560 X 1600 - used by some 30" LCD computer monitors

QUXGA = 2560 X 2048 - unused

WQUXGA = 3200 X 2048 - unused

WQUXGA = 3840 X 2400 - used briefly by IBM nearly a decade ago

4K = 4096 X 2160 - 4K digital cinema

HXGA = 4096 X 3072 - unused

WHXGA = 5120 X 3200 - unused

HSXGA = 5120 X 4096 - unused

WHSXGA = 6400 X 4096 - unused

HUXGA = 6400 X 4800 - unused

UHDTV = 7680 X 4320 - highest 16:9 setting ever shown

WHUXGA = 7680 X 4800 - unused, at 16:10 probably never will be

quote: Steve Guttag
Then there is Apple...which doesn't conform to any of that though they do have accommodation resolutions...if you MUST.

For a while Apple was making LCD monitors with standard graphics resolutions and connectors. Now the company seems to be straying from that. Their newest monitors use the Display Port connector and have not so common resolutions (the 27" model is 2560 X 1440). The Apple web site isn't set up worth a damn if you're browsing for computer monitors. Their "Displays & Graphics" page is a disorganized mess of used and new monitors and a bunch of other accessories. I get the impression they want their customers buying one piece computers, be it an iMac or MacBook. If you buy a Mac Pro tower you do have the option of attaching a non-Apple branded monitor via the dual link DVI port. If you're wanting to run dual monitors you'll have to attach at least one using a mini Display Port connection (or install an additional video card).