By Barry G. Haskell, Atul Puri, Arun N. Netravali (auth.)
ISBN-10: 0306469820
ISBN-13: 9780306469824
ISBN-10: 0412084112
ISBN-13: 9780412084119
Digital Video bargains accomplished assurance of the MPEG-2 audio/visual electronic compression commonplace. The therapy comprises the specifics had to enforce an MPEG-2 Decoder, together with the syntax and semantics of the coded bitstreams. because the MPEG-2 Encoders should not laid out in the traditional, and are literally heavily held secrets and techniques of many proprietors, the booklet in basic terms outlines the basics of encoder layout and set of rules optimization.
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Extra info for Digital Video
Example text
Although coding of the 4:2:2 format video is supported by existing tools in the MPEG-2 Video standard, it was necessary to verify that its performance was equal to or better than that of other coding schemes while fulfilling additional requirements such as coding quality after multiple codings and decodings. The second amendment32 to MPEG-2 Video involves a Profile that includes tools for coding of a number of simultaneous video signals generated in imaging a scene, each representing a slightly different viewpoint; imaging of such scenes is said to constitute multiviewpoint video.
The most straightforward way to guarantee this is for the encoder/multiplexer to keep track of the timing and buffer fullness in each of the elementary stream decoders, as will be described later. In addition to PES packets, PS Packs also contain other descriptive data called PS Program Specific Information (PS-PSI), which defines the program and its constituent parts. One specialized type of PS-PSI is called the System Header, which if present must directly follow the pack header. In the PS Sys- MPEG-2 Systems tem Header certain specifications are provided such as bitrate bound, buffer sizes for the various elementary streams, and so forth.
PES_CRC_flag † 1 indicates a CRC is present in the PES packet. PES_extension_flag 1 indicates an extension of the PES packet header. PES_heade_data_length (8-bits) Specifies the total number of bytes following in the optional fields plus stuffing data, but not counting PES_packet_data. The presence or absence of optional fields is indicated by the above indicators. PTS (presentation time stamp) for presentation units. Presentation times DTS (decoding time stamp) Decoding times for presentation units.
Digital Video by Barry G. Haskell, Atul Puri, Arun N. Netravali (auth.)
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