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12.3. Video Formats

12.3.1. MPEG

The MPEG file format is complex, and has multiple parts that are partly described in previous chapters and fully specified by the MPEG specification; this section is a overview that does not go into specific technical details. Essentially, an MPEG file is a bounded MPEG-compliant bitstream that is a sequence of MPEG packets.

The file format has two forms: the transport stream and the program stream. Each is optimized for a different set of applications. Both the transport stream and program stream enable synchronizing the decoding and presentation of the video and audio information, and ensure that data buffers in the decoders do not overflow or underflow. Information is coded using time stamps concerning the decoding and presentation of coded audio and visual data and time stamps concerning the delivery of the data stream itself. Both bit stream definitions are packet-oriented multiplexes.


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