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Program Chain
A program chain (PGC) is a linear sequence of programs, or 8-bit pointers to groups of cells. This allows for seamless branching in DVD The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kin ... playback, such as would be required for multi-angle scenes. The first PGC in a DVD title is called the ''entry'' PGC. A PGC with no programs is called a ''dummy'' PGC. Each PGC has a color palette of 16 colors, recorded in YCbCr format. References DVD {{technology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seamless Branching
Seamless branching is a mechanism used on DVDs and Blu-ray Discs to allow the player to jump to a different scene after finishing one. The most common purpose is to have several versions of a scene within one film, without having to store the entire film on the disc several times. A popular example is the Platinum Edition DVD of ''The Lion King'', where the user can select between the original theatrical version and an extended version. The two versions differ only in one scene (the "morning report"). The DVD player is instructed to play the film normally up to this scene, then jump to the appropriate scene as selected by the user before the commencement of the film, and then jump back to play the rest of the film. The user normally does not notice this jump, hence the word ''seamless''. Larger scale examples of the same technique are seen in the 2000 Ultimate Edition DVD of '' Terminator 2: Judgment Day'', the 2007 DVD rerelease of ''Blade Runner'' and the Platinum and Diamond Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YCbCr
YCbCr, Y′CbCr, or Y Pb/Cb Pr/Cr, also written as YCBCR or Y′CBCR, is a family of color spaces used as a part of the color image pipeline in video and digital photography systems. Y′ is the luma component and CB and CR are the blue-difference and red-difference chroma components. Y′ (with prime) is distinguished from Y, which is luminance, meaning that light intensity is nonlinearly encoded based on gamma corrected RGB primaries. Y′CbCr color spaces are defined by a mathematical coordinate transformation from an associated RGB primaries and white point. If the underlying RGB color space is absolute, the Y′CbCr color space is an absolute color space as well; conversely, if the RGB space is ill-defined, so is Y′CbCr. The transformation is defined iITU-T H.273 Nevertheless that rule does not apply to P3-D65 primaries used by Netflix with BT.2020-NCL matrix, so that means matrix was not derived from primaries, but now Netflix allows BT.2020 primaries (since 2021). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
