Kodning av information för ljud, bild, multimedia och hypermedia

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This document specifies video-based point cloud compression.

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This document specifies data formats for both transport and storage of genomic information, including the conversion process.

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The formats defined in ISO/IEC 23008-12:2017 enable the interchange, editing, and display of images, as well as the carriage of metadata associated with those images.
The Image File Format builds on tools defined in ISO/IEC 14496-12 to define an interoperable storage format for a single image, a collection of images, and sequences of images.
ISO/IEC 23008-12:2017 specifies brands for the storage of images and image sequences conforming to High Efficiency Video Coding (HEVC).
NOTE       The storage of HEVC video sequences is out of scope and is handled by ISO/IEC 14496‑15.
This format defines normative structures used to contain metadata, how to link that metadata to the images, and defines how metadata of certain forms is carried.

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This Recommendation | International Standard specifies the syntax and semantics of video usability information (VUI)

parameters and supplemental enhancement information (SEI) messages. The VUI parameters and SEI messages defined

in this standard may be conveyed within coded video bitstreams in a manner specified in a video coding specification or

may be conveyed by other means as determined by the specifications for systems that make use of such coded video

bitstreams. This document is particularly intended for use with coded video bitstreams as specified by Rec. ITU-T H.VVC |

ISO/IEC 23090-3, although it is drafted in a manner intended to be sufficiently generic that it may also be used with other

types of coded video bitstreams.

This document is written in a manner such that it is intended to be referenced by other technical specifications. Such other

technical specifications are to be written in a manner to specify certain necessary elements to enable the use of the VUI

parameters and SEI messages.

VUI parameters and SEI messages can assist in processes related to decoding, display or other purposes. However, unless

otherwise specified in a referencing specification, the interpretation and use of the VUI parameters and SEI messages

specified in this document is not a required functionality of a video decoder or receiving video system. Although semantics

are specified for the VUI parameters and SEI messages, decoders and receiving video systems may simply ignore the

content of the and VUI parameters and SEI messages or may use them in some manner not specified in this document.

Kommittébeteckning: SIS/TK 302 (Multimedia, kodning och representation)
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This Recommendation | International Standard specifies a video coding technology known as Versatile Video Coding, comprising a video coding technology with a compression capability that is substantially beyond that of the prior generations of such standards and with sufficient versatility for effective use in a broad range of applications.

Only the syntax format, semantics, and associated decoding process requirements are specified, while other matters such as pre-processing, the encoding process, system signalling and multiplexing, data loss recovery, post-processing, and video display are considered to be outside the scope of this Recommendation | International Standard. Any encoding process that produces bitstream data that conforms to the specified bitstream syntax format requirements of this Recommendation | International Standard is considered to be in conformance with the requirements of this Recommendation | International Standard. Additionally, the internal processing steps performed within a decoder are also considered to be outside the scope of this Recommendation | International Standard; only the externally observable output behaviour is required to conform to the specifications of this Recommendation | International Standard. The decoding process is specified such that all decoders that conform to a specified combination of capabilities known as the profile, tier, and level will produce numerically identical cropped decoded output pictures when invoking the decoding process associated with that profile for a bitstream conforming to that profile, tier and level. Any decoding process that produces identical cropped decoded output pictures to those produced by the process described herein (with the correct output order or output timing, as specified) is considered to be in conformance with the requirements of this Recommendation | International Standard.

This Recommendation | International Standard is designed to be generic in the sense that it serves a wide range of applications, bit rates, resolutions, qualities and services. Applications should cover, among other things, digital storage media, television broadcasting and real-time communications. In the course of creating this Recommendation | International Standard, various requirements from typical applications have been considered, necessary algorithmic elements have been developed, and these have been integrated into a single syntax. Hence, this Recommendation | International Standard will facilitate video data interchange among different applications.

Considering the practicality of implementing the full syntax of this Recommendation | International Standard, however, a limited number of subsets of the syntax are also stipulated by means of "profiles", "tiers" and "levels". These and other related terms are formally defined in Clause 3.

A "profile" is a subset of the entire bitstream syntax that is specified in this Recommendation | International Standard. Within the bounds imposed by the syntax of a given profile, it is still possible to require a very large variation in the performance of encoders and decoders depending upon the values taken by syntax elements in the bitstream such as the specified size of the decoded pictures. In many applications, it is currently neither practical nor economical to implement a decoder capable of dealing with all hypothetical uses of the syntax within a particular profile.

In order to deal with this problem, "tiers" and "levels" are specified within each profile. A level of a tier is a specified set of constraints imposed on values of the syntax elements in the bitstream. These constraints may be simple limits on values. Alternatively they may take the form of constraints on arithmetic combinations of values (e.g., picture width multiplied by picture height multiplied by number of pictures decoded per second). A level specified for a lower tier is more constrained than a level specified for a higher tier.

Coded video content conforming to this Recommendation | International Standard uses a common syntax. In order to achieve a subset of the complete syntax, flags, parameters and other syntax elements are included in the bitstream that signal the presence or absence of syntactic elements that occur later in the bitstream.

Rec. ITU-T H.SEI | ISO/IEC 23002-7 specifies the syntax and semantics of the video usability information (VUI) parameters and supplemental enhancement information (SEI) messages that do not affect the conformance specifications in Annex C. These VUI parameters and SEI messages may be used together with this Recommendation | International Standard.

This is the first version of this Recommendation | International Standard.

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This document provides specifications for the normative representation of the following types of genomic information: unaligned sequencing reads including read identifiers and quality values aligned sequencing reads including read identifiers and quality values reference sequences

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This document specifies the storage format for streams of video that is structured as NAL units, such as AVC (ISO/IEC 14496-10) and HEVC (ISO/IEC 23008-2) video streams.

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Reference software is normative in the sense that any conforming implementation of the software, taking the same conformant bitstreams, using the same output file format, will output the same file. Complying ISO/IEC 23092 implementations are not expected to follow the algorithms or the programming techniques used by the reference software. Although the decoding software is considered normative, it cannot add anything to the textual technical description included in parts 1 and 2 of ISO/IEC 23092.

The Genomic Information Representation Reference Software contained in this part of ISO/IEC 23092 series is referred to as Genomic Model (GM) and it comprises the following items:

1. Decoding Software is catalogued in subclause 6.3. This software accepts streams encoded according to the normative specification in parts 1 and 2 of ISO/IEC 23092 and decodes the streams into the content types associated with each stream. While this software appears in the normative part of this specification, attention is drawn to the fact that the implementation techniques used in this software are not considered normative – several different implementations could produce the same result – but the software is considered normative in that it correctly implements the decoding processes described in parts 1 and 2 of ISO/IEC 23092.

The Genomic Model is attached to this document in file w18803_MPEG-G_Reference_SW_1.3.1-DIS.zip.

Attention is called to the fact that this decoder is provided for the purpose of decoding normative bitstreams. The performance of this decoder should not be taken as indicative of that which can be obtained from implementations where computational optimization is given priority.

Since bitstream encoding software is provided, attention is called to the fact that this encoder is provided for the purpose of creating bitstreams with normative syntax. The performance of this encoder should not be taken as indicative of that which can be obtained from implementations where quality and computational optimization are given priority. The techniques used for encoding are not specified by this specification.

File locations given in this document are expressed relative to this document's location in the source tree.