Talk:CinemaDNG

Creation

I couldn't find a way of saving this page with having to add a Subject/heading. Whenever I left that field empty, it reminded me about it, and said "if you save again it will be written without a subject/heading". Then when I pressed "Save", it went back through the verification sequence, and when I once again pressed Save it then repeated the reminder. In the end, after a few times round the loop, I just wrote CinemaDNG as the subject/heading. This has left the page looking a bit strange. I'll try to fix it soon. Barry Pearson 17:22, 18 September 2009 (UTC)[reply]

Done! I wonder what the problem was? My fault, I guess - it was my first page creation. Barry Pearson 17:26, 18 September 2009 (UTC)[reply]

I'm confident Wikipedia should have a page for this topic. CinemaDNG now has 2 events associated with it - first, the launch of the proposal in April 2008, and now the supply of prerelease products and services and a specification in September 2009. The first event may not have been enough to warrant a new page. But the substantial nature of the recent deliverables is evidence of long-term investment in a project that will not disappear in the near future. The deliverables are freely available, and therefore will take on a life beyond just a few specialists. Several other companies are involved, and some have made press announcements and even product developments. Barry Pearson 17:22, 18 September 2009 (UTC)[reply]

There is no guarantee that CinemaDNG will suceed in its objectives (although Adobe has a good track-record in establishing new formats and standards). But we are unlikely to know for years, during which time it will be of interest here. And if it fails, that too will be of interest, and cross-linkage with successful alternatives will be useful. In addition, a page about CinemaDNG can add value to descriptions of other formats already within Wikipedia which it exploits, including DNG, XMP, and MXF. That is one of my reasons for creating this page - I am bringing material about DNG up to date, and needed this page to refer to. Barry Pearson 17:22, 18 September 2009 (UTC)[reply]

Ongoing maintenance

I've begun to tweak the page to improve its readability. Frankly, taking this page much further needs expertise that I don't (currently) have. I have posted an announcement about this page on the CinemaDNG user forum identified in the page itself, emphasizing the need for a "neutral point of view" and credible references. Barry Pearson 07:39, 19 September 2009 (UTC)[reply]

Lossy compression appears not "proprietary" to Blackmagic Design

It seems (possibly need a public sample file to verify) the compression is really just the lossy compression, ported from the DNG 1.4 specification (Digital_Negative#Characteristics).

The software slimRAW, listed in the article before, now also claims this on their web site ([1]):

Alternatively, our high quality 3:1 and 4:1 lossy CinemaDNG compression provides for even bigger storage space and storage bandwidth gains.

and

Lossy CinemaDNG is supported by Blackmagic Design DaVinci Resolve.

So it is a non-standard extension supported by at least two manufacturers. Ylai (talk) 15:44, 22 April 2016 (UTC)[reply]

External links modified

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RED’s '314 patent claims and CinemaDNG adoption in cameras

There is a move among video camera manufacturers to drop CinemaDNG support in favor of BlackMagic’s BRAW and other non-lossless (not truly scene-referred?) “raw” formats. It appears to be related to the '314 patent by RED.

The most frustrating part is that RED’s patent appears to be extremely broad, covering the whole matter of _capturing visually lossless raw video in-camera_. Apple tried to challenge RED’s patent but apparently unsuccessfully.

I think a section about this patent challenge is worth adding. The article overall begs a natural question as to why despite its benefits CinemaDNG has such sparse adoption among video camera makers.

I think this fact is underreported; many materials imply some “obsolescence” of CinemaDNG while in fact it’s being a victim to an arguably overly broad patent. I personally know that many video professionals and enthusiasts would _appreciate_ an open interchangeable archival-viable fully lossless scene-referred raw video standard, even if it takes more disk space than its “compressed raw” alternatives. — Preceding unsigned comment added by Goblin89 (talk • contribs) 02:25, 6 September 2020 (UTC)[reply]