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21st Century Cinema: An indie look at Digital Cinema

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Creative Cow Magazine: Digital Cinema
A Creative Cow Magazine Extra

Digital Cinema, plus Windows on Mac workflow

Russell Lasson Russell Lasson
Provo, Utah US
© CreativeCOW.net. All rights reserved.

Article Focus: You may have heard that digital cinema is coming, and that it will be big. Both are true, and Creative Cow leader Russell Lasson is one of the people making it happen. Here is a look at how digital cinema works, and how one indie company is building their business around it. Also, a closer look at professional-strength Windows on Mac workflows.


Have you ever been in a position where a producer asks you to do something that you’ve never done before? Your first reaction might be to stare, and say, “What are you, crazy?” But, after biting your lip and gathering your thoughts, you respond, “Sure, I think I can arrange that.”

I was in such a position a couple of years ago. I had just finished coloring a local feature film shot on Varicam when the producer asked if I could arrange to play the film at a local theater that had recently converted to digital cinema projectors.

After researching the options available at the time, I decided that the most cost effective way to do this was to actually drag my edit system up to the projection booth, and play the film out to the projector and audio sound system using a AJA Kona 3.

It worked out great! The producers loved it. From that time on, it was clear to me that digital cinema was the future of theatrical film distribution and projection, and that I had a real business opportunity. So in early 2008, I started Ridgeline DCM, specializing in digital cinema mastering for feature films. The mastering equipment is based around QubeMaster Pro from QubeCinema. Clients have ranged from multi-million dollar feature producers to ultra-low budget filmmakers.

 

SAY GOODBYE TO TRADITIONAL DISTRIBUTION

Traditional motion picture workflow begins with shooting on film. The original camera negatives are cut together to assemble the story, and the assembled film is then transferred to a positive film stock (inter-positive, or IP). The positive film print is then transferred back to a negative film stock (inter-negative, or IN). Finally, release prints are made from the inter-negative film print, then shipped to movie theaters to be screened on a film projector.

(Below, 35mm film projector of unknown age.)

35mm film projector, unknown age -- 1950s? Italy?

This means that, by the time a film print reaches a movie theater, it’s at least three generations away from the original camera negative. Quality suffers with each generation, so that what you see in the theater never measures up to the original master.

On top of that, every time the film print is shown it collects dust and scratches. After three or four weeks of four or five screenings a day, that film print ends up looking like it’s been drug behind a pick-up truck that’s been driving circles in the desert.

After more than 100 years of this traditional film distribution, Disney, Fox, Paramount, Sony Pictures Entertainment, Universal and Warner Bros. Studios created the Digital Cinema Initiative (DCI) in 2005, to encourage the adoption of digital cinema throughout the world.

The DCI standard was the tipping point for getting digital cinema rolling. In 2005, there were just a few hundred digital cinema installations. Today there are more than 5000 of them. Even though the majority of theaters are still using film projectors, that will change within the next couple of years. High-profile films ranging from “Star Wars Episode II: Attack of the Clones” to “The Dark Knight” have helped drive adoption, as have alternative uses, such as theatrical presentations of live concerts and sporting events.

3D is also helping push adoption of digital cinema, as many digital cinema projectors can easily be adapted to play 3D content. With the wide success this year of 3D features including “Journey to the Center of the Earth” and the Hannah Montana/Miley Cyrus 3D concert, you can expect to see 3D making a bigger surge in the future.Photo by Sebastian Raymond; © MMVII New Line Productions, INC. and Walden Media, LLC

Even the National Football League is getting in the action by broadcasting an American football game to theaters in 3D!

While 3D is still only in use in a fraction of the overall installations, companies like Dolby and Real D are shipping 3D digital cinema units at an accelerating rate.

 

HOW DIGITAL CINEMA WORKS

Most major motion pictures are shot on film and finished using a digital intermediate (DI) process. It starts as the original film frames are scanned in as digital files. Color correction, visual effects, dust removal and titles are done digitally. This digital master is then printed back to film stock using a film recorder.

Even with DI post, a film shown in a movie theater using a film projector is still at least three film generations away from the digital cinema master.

The development of digital distribution allows filmmakers to send a digital cinema master to theaters instead of sending film prints. For simplicity’s sake, we’ll call them digital film prints. These digital film prints consist of the film encoded into a JPEG2000 image sequence, and an audio mix for the film.

The JPEG2000 encoding reduces the size of the film from a couple of terabytes down to a few hundred gigabytes. This compression is also visually lossless, meaning that the digital print looks virtually identical to the original digital master and, even compressed, will actually look much better than what you see from a film projector.

There are several different systems for digital cinema encoding, ranging in price from $799 to over $100,000, depending on the features.

For my own system, I choose to use QubeMaster Pro from Qube Cinema because it offers me all of the professional features that I needed without requiring expensive proprietary hardware. Plus, I’ve been really satisfied with their support team.

(Click image below for larger)

Digital Cinema Encoding, using QubeMaster Pro, with Boot Camp

QuVis has recently released Wraptor, a $799 digital cinema plug-in for Apple Compressor. It’s tempting because it runs on Mac, but it simply doesn’t have the options I needed for full professional encoding. So I went with QubeMaster Pro — which even though it’s a Windows program, I’ve been running on my Mac using Boot Camp.

(For more details, see sidebar, "Working with Windows on Mac," below.)

When it comes down to it, you can run just about anything through digital cinema encoding. I recently did a test with a feature film being shot in DV with a Canon XL2. I played it out from one computer, and digitized through the AJA IoHD to upconvert to ProRes at 1080. From there, I used Apple’s ProRes decoder for Windows to go straight into QubeMaster Pro for encoding.

In another recent project, the film was archived as DPX sequences on LTO. After restoring the DPX files from the archive and making the needed changes to the film, I sent the file sequences directly into QubeMaster Pro. Part of what has made QubeMaster Pro so attractive is that it really has directly handled every file format I’ve needed to work with.

After encoding a project, things can get tricky, because the encoded files can’t just be checked on any computer. Instead, they must be transferred to a digital cinema server, which can cost between $14,000 and $20,000.

(Below, our Dolby Digital Cinema server)

Dolby Digital Cinema server

 

The server has to be connected to a digital cinema projector, which can run from $60,000 to over $100,000.

I’ve recently partnered with Universal Post and we’ve set up a theater for color correction, equipped with the Christie CP2000M DLP projector, a 20’ wide screen and an Assimilate Scratch system. As we’ve brought in clients and potential clients, everyone has said, “Wow, this is exactly what we need here in Utah.”

Since then, it’s been crazy. We’re completely booked with features right now.

Christie CP2000 brochure

Above, the Christie CP2000 brochure image. Below, the CP2000 as installed. Note ventilation and cooling systems.

Christie CP2000 Digital Cinema Projector installed

 

Below, another of our projectors, which you can also see in the background, to the right in the picture above. Once again, note the ventilation and cooling systems.

Digital Cinema projector

 

DELIVERY

The main means of distributing these digital film prints today is shipping hard drives around. With films needing only a few hundred gigabytes each, they can be delivered on a single drive with room to spare.

In the future (hopefully the near future), shipping drives will transition to delivery over satellite. This will mean that the film is delivered to one central distribution location, and then transmitted to all of the digital theaters that need it. It’s going to be awesome!

Piracy prevention is one of the most interesting topics when talking about digital cinema. For example, digital film prints are encrypted during mastering. Decryption requires a digital key file called the KDM, which resides on a secure server. Even if you robbed a delivery truck carrying the latest blockbuster film, you couldn’t play it without the KDM file. The KDM can also be used to specify playback dates to prevent early screenings, or to prevent theaters from collecting films to show again in the future.

In addition to encrypting the content in delivery, the digital cinema servers encrypt the dual-link SDI video stream that it sends to the projector. The DCI projector then decrypts the stream for playback. So even if you intercepted the video stream as it comes off the server with your own dual-link capture card, you wouldn’t get anything useful out of it.

Finally, there is also digital watermarking. If someone records a film in a theater with their little video camera, investigators can track down the theater it was captured from, the screening date and time, and more — even if the film is recompressed and played on the web.

 

PLAYBACK AND BEYOND

The easiest way to describe how a digital playback system works is by comparing it to a home media server, like an AppleTV. You load your content onto it, then select what to play back as you need it. You can even make playlists to choose the order in which the content is played back.

With digital cinema playback, each projector has its own server, with content and playlists that schedule showings. It’s all quite straightforward. (Below, the Qube Digital Cinema Server.)

Qube Digital Cinema server

At the heart of most digital cinema projectors is DLP technology developed by Texas Instruments.

(Below, TI's digital cinema chip.)

Texas Instruments Digital Cinema chip

 

While Texas Instruments makes the technology, companies like Christie, NEC and Barco license it to make their own projectors. Projectors intended for digital cinema installations are different than other projectors because they must comply with the DCI standards for color conversion, decryption, and resolution: 2048x1080, or 2K.

Many people might wonder, “What about 4K projectors?” While they certainly exist, there are currently fewer than 20 installed in digital cinemas throughout the United States, compared to the thousands of 2K cinemas — which, I might add, still look awesome!

The future of digital cinema looks very promising. It already provides new opportunities for studios and theater owners trying to adapt to the new entertainment landscape. It is allowing more independent films to reach theater screens by avoiding the costly film-out process. It has rejuvenated 3D technology by making it easier for theaters to show. It has even allowed live concerts and sporting events to be broadcast to theaters to expand the potential audiences for those events.

Regardless of how individual installations are being used, digital cinema really is the future of film mastering, distribution and projection. You can be sure of one thing: it’s coming soon to a theater near you — if it’s not already there!

 

SIDEBAR: RUNNING WINDOWS ON MAC

Windows on Mac: Boot Camp, Fusion, Parallels and more

In starting a new company, it was important to me to invest money where it would make the biggest difference and to cut costs that weren’t necessary. One of the ways I saved thousands of dollars was to run Windows software on my Mac.

The Boot Camp Assistant is a utility included with Intel Macs that installs Windows drivers for your Mac hardware, and clears a partition for you to format using your Windows installation disk. You can also create that partition on a second hard drive, but either way, you’ll need to provide your own copy of Windows.

You can choose which OS to boot into by holding down the option key at startup, but this method doesn’t allow communication between them. Neither OS knows that the other is there.

Here are some basic ways of transferring between the Windows OS and Mac OS that will hopefully make the process a little less painful — or at least less painful than it was for me!

The first way is by formatting a drive as a file structure that both operating systems can understand, such as FAT32. The disadvantage with this is that FAT32 is an outdated file system, with limitations on things like the maximum file size. There are also applications, including operating systems, that simply won’t work on FAT32-formatted drives, so it’s sometimes simply not an option

There are programs that allow you to read the file system of the other operating system you’re using. MediaFour MacDrive sounds like a program for the Mac, but it’s not! It’s a Windows program that mounts Mac Extended format (HFS) drives while running Windows.

On the Mac side, Paragon’s NTFS For Mac OS X allows you read and write to Windows formatted (NTFS) drives or partitions. Both of these programs run in the background, invisibly.

Regardless of which operating system you have running, you’ll be able to access your files on drives formatted by the other OS.

I have a Mac Pro that’s running both Mac and Windows. I also have a 5TB SATA RAID connected to the system using the ATTO R380 host card. Obviously, I need both operating systems to read and write to the RAID. Running QubeMaster Pro on Windows is the priority for me on this system, so I formatted the RAID using NTFS.

By installing NTFS for Mac OS X, I can see the RAID in Windows — and I can write to it at over 400MB/sec!

While both MacDrive and NTFS For Mac OS X work great with video files, I have found a limitation to them. If you open a folder with 30,000 TIFF files in it, both programs behave unreliably. This was a really big workflow issue for me as I deal with reels from feature films that are often provided to me as TIFF or DPX image sequences.

On one project, I was provided with a FireWire drive formatted for Mac and I needed to get those files into the Windows OS. Neither MacDrive or NTFS for Mac could deal with that much data without passing out. So I needed a different solution.

This is where I learned about share points. Using share points does require two computers. In my case, I had a Mac Pro desktop running Windows Vista, and a MacBook Pro laptop with Mac OS X 10.5. I connected the computers together via Ethernet.

With the Firewire drive connected to the MacBook Pro, I opened up the Sharing panel in System Preferences. I selected the FireWire drive as a shared folder under the Options menu, I turned SMB Sharing on and enabled my user account to be used with SMB.

Enable SMB Sharing via Mac OS X Share Points

Now from the desktop Mac Pro running Vista, I navigated to the network icon in Windows Explorer and sure enough, my MacBook Pro showed up. I logged in using my user name and password and just like that, I was able to see the FireWire drive in Windows and was able to copy the files over without a problem.

There are several other basic ways to let Mac and Windows talk, including virtualization software like VMware Fusion and Parallels Desktop that run Windows as if it were a Mac application, with Windows apps running inside it. (Once again, you’ll need to bring your own copy of Windows.)

However, these are the techniques that I’ve been using, and so far, I’ve been able to do everything that I’ve needed to do.

Return to article





Russell Lasson, Creative Cow forums for RED Camera and Windows on Mac

Russ is now head colorist and digital cinema technician at Universal Post in Salt Lake City, Utah. With two RED ONE packages and an Assimilate Scratch system in house, he specializes in RED post-production workflows.“With all the advances in digital cinema, it’s been a lot of fun to be on the cutting edge of the technology.”

You can find him hosting Creative Cow communities for Apple - Windows on Mac, and RED Camera.




Creative Cow Magazine: The New Visions Issue

Also in Creative Cow Magazine's
"New Visions" issue:

  • Panasonic's John Galt on the truth about 2K, 4K and the future of pixels
  • Panasonic AVC-Intra and the HPX2000 camera
  • Nuke: An introduction for AE users
  • Affordable stereoscopic HD production
  • The power of tenacity
  • Life on the film festival circuit
  • And much more!

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Comments

21st Century Cinema: An indie look at Digital Cinema
by Darren Powell
What is the point of all this 'Running Windows on your Mac' stuff?

Intel Macs are just PC's now ... the only difference between a Mac and a PC was the choice of processor ... Apple went with Motorola all those years ago ... and PC's were fitted with Intel chips ... the GUI's are all essentially based on the original work by Doug Englebart developing the Xerox PARC computer ... want to see where Windows and the Max OS (and all the others) came from? ... go here

http://arstechnica.com/old/content/2005/05/gui.ars/3


Now that Macs are running Intel chips finally the nightmare compatibility issues we've had since I bought my first PC in 1984 are coming to an end.

Macs with Intel chips are just PC's ... stick Windows on them and you're running a PC with an Apple case ...

Run Mac OS on them and you're running a PC with a different looking Operating System ... think Linux, BeOS, FreeBSD, Syllable, Amiga (yep still going), MorphOS, RISC OS (Acorn, remember them?), OS2 Warp, )...

Finally we're heading towards a global computing environment that will allow me to make something on my PC and it will 'just work' on a Mac ... and of course it will work vice-versa because 'Intel Mac' is another way of saying PC.

It's a computer, it has an operating system, the quicker we can all boot up whatever OS you feel most comfortable with, or feel most strongly alligned to due to clever marketing and advertsing, or feel has the most software written for it to do the job that you need to do ... and can share it with all the other computers on the planet so productivity goes up and cash keeps flowing around the place to hopefully play a part in stopping recession and depression ... the better.

Gee, sounds like what we need in Digital Cinema as well ... UTOPIA!)

(Nah, never gonna happen because of two things: PRIDE and GREED!)

Happy computing.

Darren Powell
Sydney Australia



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