This document provides a tutorial on the MPD and IMSC1 timelines, as well as recommendations on an initial “launch” constraint set. The purpose of the recommendations in this document is to provide interoperability of the ATSC 3.0 IMSC1 Component. Broadcasters and others have noticed inconsistencies with early IMSC1 encoding and decoding implementations. This is a proposed solution to this issue. The goal is to provide conformant and consistent encoding and decoding, including a conformance test plan. The target audience is engineers. It is assumed that the reader is knowledgeable about MPEG DASH, ISO BMFF, and IMSC1 in general.
Download T/300, “ATSC Technology Group Report – ATSC 3.0 Launch – DASH Timeline and IMSC1”, approved 9 October 2020.
Subscribe to The Standard, our monthly newsletter, to stay up-to-date with ATSC news and events around the world.
Advanced Television Systems Committee, Inc.
1300 I Street NW, Suite 400E
Washington, DC 20005
The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards and recommended practices for digital terrestrial broadcasting. ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC also develops digital terrestrial broadcasting implementation strategies and supports educational activities on ATSC standards.