ISO/IEC 13818-1:2022 PDF
Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems
Information technology — Generic coding of moving pictures and associated audio information — Part 1: Systems
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 316
- Дата публикации:
- 30 сентября 2022 г.
- Издание:
- ISO/IEC IS 13818 edition 8 version 1
- ICS:
- 35.040.40
This document specifies the system layer of the coding. It was developed principally to support the combination of the video and audio coding methods defined in Parts 2 and 3 of ISO/IEC 13818. The system layer supports six basic functions: 1) the synchronization of multiple compressed streams on decoding; 2) the interleaving of multiple compressed streams into a single stream; 3) the initialization of buffering for decoding start up; 4) continuous buffer management; 5) time identification; 6) multiplexing and signalling of various components in a system stream. A Rec. ITU-T H.222.0 | ISO/IEC 13818-1 multiplexed bit stream is either a transport stream or a program stream. Both streams are constructed from PES packets and packets containing other necessary information. Both stream types support multiplexing of video and audio compressed streams from one program with a common time base. The transport stream additionally supports the multiplexing of video and audio compressed streams from multiple programs with independenttime bases. For almost error-free environments the program stream is generally more appropriate, supporting software processing of program information. The transport stream is more suitable for use in environments where errors are likely. A Rec. ITU-T H.222.0 | ISO/IEC 13818-1 multiplexed bit stream, whether a transport stream or a program stream, is constructed in two layers: the outermost layer is the system layer, and the innermost is the compression layer. The system layer provides the functions necessary for using one or more compressed data streams in a system. The video and audio parts of this Specification define the compression coding layer for audio and video data. Coding of other types of data is not defined by this Specification, but is supported by the system layer provided that the other types of data adhere to the constraints defined in 2.7.
Abstract
Overview
ISO/IEC 13818-1:2022 (also published as Rec. ITU‑T H.222.0) defines the system layer for generic coding of moving pictures and associated audio (commonly known as MPEG‑2 Systems). This edition (eighth, 2022) specifies how multiple compressed streams are packaged, synchronized, signalled and delivered as either transport streams or program streams. The standard is essential for building interoperable delivery systems that combine video, audio and auxiliary data in a single multiplexed bitstream.
Key topics and technical requirements
- System functions: synchronization of multiple compressed streams, interleaving into a single stream, buffer initialization for decoder start-up, continuous buffer management, time identification, and multiplexing/signalling of program components.
- Stream types: definition and use-cases of transport streams (robust for error-prone networks; supports multiple programs with independent time bases) and program streams (better for near error‑free environments and software processing for single-program content).
- Packet structure: both stream types are constructed from PES (Packetized Elementary Stream) packets plus system information packets and descriptors.
- Timing and buffering: timing model, PCR/PTS/DTS semantics and buffer models to ensure synchronized decoding and playback across audio/video streams.
- Program-specific information (PSI): tables, descriptors and mechanisms for signalling program composition, PID allocation and program metadata.
- Compatibility and carriage: rules for carrying other compressed formats and metadata-explicit support and carriage guidelines for standards such as H.264 | ISO/IEC 14496-10, HEVC, VVC, EVC, JPEG 2000, ISO/IEC 14496, ISO/IEC 15938, MPEG‑H 3D audio and related elements.
- Annexes and conformance: CRC/decoder models, DSM‑CC, splicing rules, real‑time interfaces and registration procedures for private data formats and identifiers.
Applications and who uses it
- Broadcast and cable system designers implementing DVB, ATSC or similar systems.
- Streaming and OTT platform engineers packaging live or on‑demand content.
- Hardware and software codec, multiplexer and demultiplexer vendors ensuring interoperable decoders.
- Digital storage and disc authoring tools using program streams for near‑error‑free media.
- Systems integrators handling carriage of multiple programs, subtitles, metadata and ancillary data.
Related standards
- ISO/IEC 13818-2 (Video) and ISO/IEC 13818-3 (Audio) - compression layers that the system layer is designed to multiplex.
- Rec. ITU‑T H.222.0 - equivalent recommendation describing MPEG‑2 Systems.
- Other referenced carriage mappings: ISO/IEC 14496 (MPEG‑4), ISO/IEC 23008 (HEVC/other), ISO/IEC 15938 (MPEG‑7) - for integration scenarios.
Keywords: ISO/IEC 13818-1:2022, MPEG‑2 Systems, transport stream, program stream, PES packets, synchronization, multiplexing, buffering, ITU‑T H.222.0.
Технические детали
- Технический комитет
- ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
- SKU
- ISO/IEC 13818-1:2022
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