![]() ![]() Instead of having to update the entire film, a small metadata update is all that’s required. “Let’s say somewhere down the line, somebody realizes ‘Oh, my God – we forgot to credit the director of photography,’” Sergeant says. For example, by adding dub tracks or subtitles as small pieces of metadata. One master file can be localized for dozens of regions. DCPs are easily updatedīecause DCPs are a package of files (and not one big file), they can be edited without having to update the entire production. “Very famously, there was a Brian De Palma film playing at the New York Film Festival a couple years back, and they had to cancel the screening because the keys were for the wrong time zone. “Film festivals need a little bit more flexibility (than movie theatres),” Sergeant explains. This has led to some…embarrassing incidents at film festivals. KDM’s also specify the date and time a DCP can be played. You can make a million copies of a DCP, he explains, but if you don’t have the KDM configured for your equipment, you can’t play them. The DCP for Spider Man: No Way Home is around 500 GB and includes the 3D and 4K versions of the 2h 28m-long film). KDMs specify when, where, and how that version of the film can be played.Ī digital cinema package can be around 200 GBs in size or larger. You can think of a KDM as a content encryption key. Digital cinema servers run on Linux operating systems, which means DCP hard drives are formatted in Linux EXT3.īecause DCPs are usually encrypted, a Key Delivery Message (KDM) is required to ingest and play the content. The majority of digital projectors at theatres can’t handle anything higher. Most DCPs have a bitrate of around 250 Mbps. The audio file is a 24-bit linear PCM uncompressed multichannel WAV file. This is a lossless compression codec mastered at 24 frames-per-second (FPS), with high-resolution picture quality. The video track is encoded frame-by-frame in JPEG-2000. MXF is a video file container that wraps the track files according to Society of Motion Picture and Television Engineers (SMPTE) standards. A typical DCP includes XML files for metadata and MXF (Material Exchange Format) files. Every single frame of a film is a separate folder within the DCP. These servers connect to the digital projectors we mentioned earlier. subtitles) configured for cinema servers. DCPs are audio, video, and metadata files (e.g. ![]()
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