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Compressed DNG Format

PostPosted: Sat Oct 06, 2012 12:51 pm
by Noel Sterrett
Adobe just announced DNG Specification 1.4 which includes lossy compression for RAW files. File size is said to be around 1/3 of the original.

Now that would be a stellar addition to the BMCC/Resolve package.

Cheers.

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 1:47 pm
by Luke Armstrong
BMD - Please DON'T replace the BMCC's uncompressed DNG's with compressed ones - that would be the death nail for a lot of professional users.

Both would be good :D

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 1:56 pm
by Noel Sterrett
Luke Armstrong wrote:BMD - Please DON'T replace the BMCC's uncompressed DNG's with compressed ones

I can't recall Blackmagic ever removing a feature. Perhaps you have an example?

Cheers.

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 2:07 pm
by Luke Armstrong
No, but they have changed features. The required formatting of SSD drives is now Mac HFS+ rather than FAT

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 2:15 pm
by Peter J. DeCrescenzo
Noel Sterrett wrote:
Luke Armstrong wrote:BMD - Please DON'T replace the BMCC's uncompressed DNG's with compressed ones

I can't recall Blackmagic ever removing a feature. Perhaps you have an example? Cheers.


Possibly true, although the "DISP" button on the HyperDeck Shuttles continues to have no function whatsoever, a year or more on. But I agree: BMD generally don't take features away. Cheers.

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 2:25 pm
by Noel Sterrett
Luke Armstrong wrote:No, but they have changed features. The required formatting of SSD drives is now Mac HFS+ rather than FAT

For what product? The camera was never FAT.

On the other hand, Blackmagic just added exFAT support to the HyperDeck, but did not remove HFS+ with the upgrade.

In addition, they just added DNxHD support to the camera, and again did not remove anything in the process.

I'm sorry to go on about this, but I cannot imagine Blackmagic removing support for uncompressed RAW recording.

Cheers.

Re: Compressed DNG Format

PostPosted: Sat Oct 06, 2012 2:33 pm
by Luke Armstrong
Noel, I wasn't suggesting that BMD habitually remove features from their products.

I was simply affirming that as a professional, I know a lot of people will still want the uncompressed option and that this great new format should not be treated as a substitute, but an addition as you said.

I may have been wrong about the format change, I thought I heard something about FAT32 being considered previously but this article alludes to HFS+ being decided since NAB http://provideocoalition.com/index.php/ ... g_rather_/

Re: Compressed DNG Format

PostPosted: Sun Oct 07, 2012 7:38 am
by Soeren Mueller
Adding to what Luke already said.. a lot of people (including me) would still pretty much prefer Cineform RAW support over some form of compressed DNG any day..

Re: Compressed DNG Format

PostPosted: Sun Oct 07, 2012 1:42 pm
by Bernhard
Hello.

according to the Adobe DNG Specification Paper,
the lossy compression is based on Jpeg and does 8bit color precision only.
Therefor the paper explicitly suggests it for proxy usage.

Would be ridiculous to buy a 12bit cam for recording 8bit...

BUT: Weren't there rumors of a ProRes RAW format? I'm not sure where I read it.
Perhaps only speculation; but would be great.
As long as ProResRAW is speculation, I vote for ProRes4444 at full 12bit.

Best regards,
Bernhard

Re: Compressed DNG Format

PostPosted: Sun Oct 07, 2012 3:32 pm
by Noel Sterrett
Bernhard wrote:the lossy compression is based on Jpeg and does 8bit color precision only.


If that's correct, it would certainly render it next to useless.

But a compressed version of RAW is obviously useful (e.g. REDCODE).

Perhaps what we need is BLACKCODE.

Cheers.

Re: Compressed DNG Format

PostPosted: Mon Oct 08, 2012 10:16 am
by micklindquist
BLACKWHOLE :|

Re: Compressed DNG Format

PostPosted: Tue Oct 09, 2012 3:39 am
by imdjay
CodeMagic

Re: Compressed DNG Format

PostPosted: Tue Oct 09, 2012 9:06 am
by Scott R McCartney
Davinci Code :D

Re: Compressed DNG Format

PostPosted: Tue Oct 09, 2012 3:29 pm
by Bernhard
:lol: ... and the SDK for NLEs is named Cryptex :D

Re: Compressed DNG Format

PostPosted: Tue Oct 09, 2012 5:24 pm
by Tom Sefton
Luke Armstrong wrote:No, but they have changed features. The required formatting of SSD drives is now Mac HFS+ rather than FAT



Hang on - can PC users still read the files with macdrive?

If you are a PC user without a Mac how can you format the drive?