ISO/IEC 23000-19-2018 pdf free.Information technology — Multimediaapplication format (MPEG-A) — Common media application format(CMAF) for segmented media.
This document specifies the CMAF multimedia format,which contains segmented media objectsoptimized for streaming delivery and decoding on end user devices in adaptive multimediapresentations.CMAF specifies a track format derived from the lSO Base Media File Format, then derives addressablemedia objects from CMAF tracks that can be used for storage and delivery.CMAF specifies sets of tracks that share encoding and packaging constraints that enable the selectionof multiple tracks to form a multimedia presentation and allow seamless switching of alternativeencodings of the same content at different bit rates, frame rates, resolution, etc.CMAF specifies a hypothetical application model that determines how tracks in a CMAF presentationare intended to be combined and synchronized to form a multimedia presentation.The model abstractsdelivery to allow any delivery method.The hypothetical application model assumes a manifest andplayer, but CMAF does not specify a manifest, player, or delivery protocol, with the intent that any thatsupport the hypothetical application model can be used.CMAF specifies media profiles and brands that constrain media encoding and packaging of CMAFtracks to enable seamless adaptive switching of tracks and allow devices to identify compatible contentby its brand.CMAF specifies presentation profiles that conditionally require sets of CMAF tracks conforming tospecified media profiles and allow content creators and devices to identify compatible multimediapresentations.CMAF enables extensibility by specifying how new media profiles and presentation profiles can bespecified and identified and includes guidelines for those specifications.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document.For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 14496-1, Information technology —Coding of audio-visual objects — Part 1: SystemsISO/IEC 14496-3, Information technology —Coding of audio-visual objects — Part 3:Audio
ISO/IEC 14496-10，Information technology – Coding of audio-visual objects — Part 10: AdvancedVideo Coding
ISO/IEC 14496-12, Information technology —Coding of audio-visual objects — Part 12: IS0 base mediafile format
ISO/IEC 14496-14, Information technology —Coding of audio-visual objects —Part 14:MP4 file format.ISO/IEC 23000 pdf download.