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Cinema System Specification. This specification establishes standardized 2K and 4K container formats for digital cinema production, with resolutions of and respectively. The resolution of the video content inside follows the SMPTE 428-1 standard, which establishes the following resolutions for a 4K distribution:
* (full frame, or aspect ratio)
* (flat crop, aspect ratio)
* (CinemaScope crop, aspect ratio)2K distributions can have a frame rate of either 24 or 48FPS, while 4K distributions

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