Tag Archives: DCinema

Ongoing Sec – More Exploited Vulnerabilities Patched

Security Logo

12 November – Every freakin’ month (2nd Tuesday) there is a new set of Microsoft vulnerabilities, so much so that we have ignored reporting them.

But this month there is yet another set of Critical vulnerabilities that is being exploited in the field – read about it here at Krebs:

Zero-Days Rule November’s Patch Tuesday — Krebs on Security. This explains new Flash updates. [Your editor has eliminated Flash from his system…not worth the bother.]

But note: This does not cure the zero-day exploit that is capable of ruining your whole week~!~!~!

11 June – Another round for Adobe and Microsoft, explained by Krebs:

Adobe, Microsoft Patch Flash, Windows

14 May – Microsoft and Adobe today each released updates to fix critical security holes in their software. Microsoft’s patch batch tackles at least 33 vulnerabilities in Windows and other products, including a fix for a zero-day vulnerability in Internet Explorer 8 that attackers have been exploiting. Separately, Adobe pushed security updates for Flash Player, Adobe Reader, Acrobat and Adobe AIR.

So says Krebs On Security today. Get all the info: Microsoft, Adobe Push Critical Security Updates

6 May – Zero Day Exploit is not only in the open for IE8, but it is published for all hackers to study from.


If you must use a Windows computer, please change over to Firefox immediately (if you haven’t already.) Then read this:

Krebs On Security – Zero-Day Exploit Published for IE8

12 Feb – The normal tuesday repairs to the normallly insecure programs –

Fat Patch Tuesday — Krebs on Security

7 February – Critical Flash Player Update Fixes 2 Zero-Days — Krebs on Security |

These stories never end…not even interesting reading anymore. Just do the upgrades.

Updates are available for Windows, Mac, Linux and Android users. The latest Windows and Mac version is v. 11.5.502.149, and is available from this link. Those who prefer a direct link to the OS-specific downloads can grab them here. To find out if you have Flash installed and what version your browser may be running, check out this page.

16 Jan – Days after the critical Java fix, Kreb’s On Security announces that a new exploit not patch in the version 11 release is being sold on the black-hat black market. First, learn how-to and do turn-off Java until this is patch AND even then, only if you need it.
How to Unplug Java from the Browser — Krebs on Security

Second, read more about the sordid details here: New Java Exploit Fetches $5,000 Per Buyer — Krebs on Security

Security experts on Java: Fixing zero-day exploit could take ‘two years’ | ZDNet

Third: Point others to this site to learn “What Is Java” and how to use it if you absolutely must: What You Need to Know About the Java Exploit — Krebs on Security




13 Jan – Now it is Java wih the critical warnings…Read Kreb’s for the data, but one thing I noticed is that his link for the mac update was wrong and the auto-update that the Mac Java program points to gives an error. So here is the correct link for all OSs: Download Free Java Software, which should point to the right place. Here is where I got a successful Java for Mac download:
Oracle Ships Critical Security Update for Java — Krebs on Security Download Java for Mac OS X
Oracle Ships Critical Security Update for Java — Krebs on Security


8 January – Like the Australians needing new colors on their temperature maps as Ultra Hot turns to Double Extra Super Hot, Microsoft and Adobe are going to need new degrees above Critical and above Vulnerable. In this case, Microsoft should say, “Ultra Vulnerable Even After the Update”, As Krebs on Security explains: “… these vulnerabilities could be exploited to fully compromise vulnerable Windows systems without any help from users. …”

Read the entire piece since it has all the links for the Adobe Reader Flash Player plugin…and AIR and Acrobat…for both Windows and Mac OS.

Don’t delay…here is the link again: Adobe, Microsoft Ship Critical Security Updates — Krebs on Security

Australia adds new colour to temperature maps as heat soars | Environment | The Guardian


Continue reading Ongoing Sec – More Exploited Vulnerabilities Patched

10 Rules When Buying a DCinema Projector

Exhibition LogoIt is great to have a checklist when working on a project, especially one that is made by an expert. It would be great to have a checklist for each decision point on the checklist as well. Who has time to keep up with all the nuance of every new feature, to keep track of why one needs CAT-5 or CAT-6 cable for which circumstance, or different routers and firewalls and VPN software. Sure, there are consultants for this, but ultimately – especially if one has signed a VPF agreement – one is ultimately responsible for every detail. 

Continue reading 10 Rules When Buying a DCinema Projector

3Questions – Laser Light Engines

3Questions with LLE logoWhen we think of a digital cinema projector’s light path, we non-optical designers consider the lamp and reflector housing, the condenser lenses and prism assemblies, the DLP or LCOS chip themselves and the lens. There are obviously clever bits in between, for example the optics that will strip the UV and IR from the lamp, physical slits for the light to pass through, as well as techniques for balancing the lamp output for the proper levels of R, G and B.

There is a word that gets used by optics people – etendue – which points to certain characteristics of light that requires the balancing of quantity and angles in a manner that matches the most refined part of the system (in this case the DLP/LCOS device.) This etendue inherently restricts the ability to use more brut force on one end to get more quality light at the other end.

Continue reading 3Questions – Laser Light Engines

3D Wonders

exhibition logoProfessional critics are still whining about 3D at the movies. Some is valid, but ill-expressed. None creates the desired effect of educating and motivating a grass-roots effort to insist that the cinemas and studios improve the situation.

This month Patrick Goldstein summarized some of the arguments, and while he had the time and space to round up some past negative articles of others, he spared no space for explaining the good parts of 3D, or the fact that there was plenty of bad CGI in its early days of its evolution. Here is a list of those articles in case our professional readers have been too busy to notice that some part of the populace is speaking out against one-size-fits-all-uncomfortably-glasses and poorly illuminated screens:

Continue reading 3D Wonders

Open Source DCP Mastering

DCP Mastering is the technique of making a final product, such as a movie an ad or trailer, into the form that a digital cinema player and projector can handle. There are several products that do this from Dolby, Doremi and Qube, but they are not for the weak of pocketbook. 

Clyde de Souza just posted an article on RealVision.ae that explains the use of some open source software at:
Free Unencrypted 3D movie DCP mastering for Digital Cinema Servers.

There are several people who have tried different variations, and have lived to tell the tale:

Continue reading Open Source DCP Mastering

Laser Light Engines gets IMAX funding– Putting Light on the Subject

Laser Light Engines LogoIMAX to Form Strategic Partnership With Laser Light Engines Through Equity Investment – Subtitle: Develop High Brightness Laser Light Technology Systems Exclusively for IMAX Digital Theatre Systems and Provide Additional Outsourced Research & Development for IMAX

The path to fully compliant digital cinema presentations is littered with ‘almost’ technologies which the studios allowed until looked aside from until the appropriate technology (one that actually met the spec) was commercially available. Examples of this are the transition from MPEG to Motion JPEG, and the transition from how security keys were handled 5 years ago and how they are handled today.

Continue reading Laser Light Engines gets IMAX funding– Putting Light on the Subject

Security: Connect the Dots–Ongoing

The twin stars around which digital cinema revolves are quality and security. The first allows some leniency; for example, 3D cinema movie quality is only close to the specification required of 2D movies. But security is meant to be multi-layered and well beyond ‘good enough’. From lens to lens, the expectation is that each player will do their part to contribute to a secure whole.

Fortunately, such security is part of a general industry effort that constantly looks for and responds to problems. Unfortunately, there is a lot of nuance that require a professional eye to spot trends. In a field full of artists on very tight schedules and increasingly tight budgets, the art of security can take a lower priority if the ramifications are not known. 

Continue reading Security: Connect the Dots–Ongoing

Update: Ebert FUDs 3D and Digital Cinema


Walter Murch wrote to Roger Ebert, and since they agree that 3D has problems, it is “Case Closed” for 3D. 

Why 3D doesn’t work and never will. Case closed. – Roger Ebert’s Journal

I wish I wasn’t the one having to defend stereoscopic 3D. Like Ebert and Murch, I am not the target audience. I have a dead certain ability to suspend disbelief at the slightest whim of a director, no matter the material. I like to enjoy movies even if it is kids movies or even if it is in a language that I don’t understand while doing a QC pass. And, I know what is wrong with 3D, so I have that problem of having to avoid looking “there”.

Oh, and disclaimers in advance about being able to make any critique of the talent and exceptional understanding of Walter Murch. But he needs better reasons to convince the world against 3D movies, as the reasons he gives in the Ebert letter are over the top or wrong.

How many people get headaches from watching 3D? No one has done that study. I think the problem is overstated. My bet is that if the poll were taken the number would be dependent upon seating position and light available to the eyes. Just a guess, but since the studies haven’t been done, I am just as much an expert as anyone. Certainly, people’s impressions of 3D experience is affected by seating position. See: Scotopic Issues with 3D, and Silver Screens and 23 degrees…half the light. 3D What? 

Is there a problem with light level. Absolutely. It isn’t going to be solved soon, and will probably only be solved by lasers in the projector. Get your grass roots going, and insist that the studios and exhibitors crank up the mastering level and the light level in the auditorium…but expect to pay more, as the bulbs are not cheap and they will burn by the gross if cranked up. But get your game on guys, instead of kvetching. This is like saying CGI will be gone soon since it was sometimes poorly done in the early days. 3Questions – Laser Light Engines

Side note: Yes; Avatar was dark. I saw it in the most perfect of settings, in the same position which minutes before had been the set-up position for the light meter during re-tweaking. As perfect as possible for the color timing of that print. I’ve also seen it ‘hotter’ in post facilities. Different movie. Much more immersive. I’ve also seen clips from Star Wars and Casablanca redone in 3D. Absolutely enticing. None of this stuff is impossible to get around. It is just a little early on the curve. 

Expensive? Sure. So is the equipment that the exhibitors were forced to purchase for no reason beneficial to them. Sure, many get the finance costs of the digital cinema projector and media player paid by the studios (though by no means do all exhibitors get this.) But no facility gets their 3D equipment paid for by the studios, even though the studios take a part of the increased ticket price and so does RealD if that is the type being used.  

How much does the 3D add-on equipment cost? Depending on the system, it is as much or more than what an entire film projector system used to cost. The digital projector and media player and associated equipment costs 3 times that.  

The basis of his argument is based upon a difficulty that the brain could have overcoming a convergence/focus issue, where the brain wants to jump into a focus that doesn’t exist. Sure, but movie directors have been leading my eyes around with a focus/out of focus that I can’t enter since Maltese Falcon days, and probably before. I have trouble speaking to this argument entirely since I have always been told that the parallax issue is no longer in the mix after 25 feet, maybe 30, 40 at the outside. He elucidates the problem with examples of 60 and 120 feet. At these distances there are other visual clues telling us about the 3rd dimension, regardless of whether the movie is 2D or 3D. Discussing these topics are also fraught with making the eyes static players and the brain im-plastic.  

Ultimately, there is an audience coming in stronger numbers by the day, these human units who have been playing 3D games, watching with diminished field of vision, stroby, small, dark, in addition to bristling poor internet stuff. Myself, can’t watch ’em. But they are getting their entertainment in many different ways, and much or it 3D. With only the movies through and in the pipeline, many if not most of their tent-poles are that way too. As it becomes a better technology it will be all they will tolerate…and all that that implies.   

For me, that’s the definition of ‘case closed’.

5 May 2010 – In this week’s Newsweek Magazine, respected film critic Roger Ebert, challenges the shift from rayon to steel-belted, from NCR to IBM, from Walkman to iPod from film to digital by attacking 3D as less than food for dogs.

Consider this Why I Hate 3-D (And You Should Too) Deconstructed, a brief respite from the State of Digital Cinema Series that was heading in some of the directions mentioned in this piece.

The headings of the NewsWeek article are kept, but for standard copyright reasons, the detail paragraph or paragraphs are not copied over. They should be read, or the corresponding arguments will not read well.

Thus, reading this diary presumes that you open two browser windows, and reading the Ebert parts first.

Continue reading Update: Ebert FUDs 3D and Digital Cinema

Question 0: What is the exact definition of DCinema

An email exchange prompted by a correspondant in China, brought out this essential information that captures the basic definition: “What exactly is Digital Cinema.”

This question is a little broad. Better answers depend on your purpose and needs. But, in general…

Continue reading Question 0: What is the exact definition of DCinema