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IntroductionThis documentation supports the system designers and engineers who are building a content creation product. It lists the requirements for creating Dolby Digital Plus content in such a product and provides guidance to help in meeting the requirements.
Channel abbreviationsThis table lists the channel notations used in this document.

IntroductionThis documentation supports the system designers and engineers who are building a content creation product. It lists the requirements for creating Dolby Digital Plus content in such a product and provides guidance to help in meeting the requirements.
- About this documentation This documentation is part of the Dolby Digital Plus Online Delivery Kit. For a Dolby Digital Plus online delivery product (content creation or playback system) to receive approval from Dolby Laboratories, it must meet the requirements listed in the corresponding system development guide for the technology or technologies the product supports. Dolby Laboratories provides test materials to evaluate whether the product satisfies requirements and recommendations. Test materials are contained in the Dolby Digital Plus Online Delivery Kit.
- New in this versionThis version of the documentation contains new or changed information from the previous version.
- Standards and Dolby documentsStandards and Dolby documents provide additional information to assist you in designing your product.
- Channel abbreviationsThis table lists the channel notations used in this document.
- Contacting Dolby Support services are available to address any questions and to provide advice about integrating Dolby technology into your product.
Product overviewA typical product built and tested using the resources in this kit delivers Dolby Digital Plus content in an online container that supports adaptive streaming.
RequirementsAn online delivery content creation product must meet all defined requirements for the online delivery formats it supports.
Dolby Digital Plus streams in online delivery formatsThe Dolby Digital Plus format provides a high level of flexibility and can support complex bitstream configurations. To minimize impact on decoding devices while ensuring that a wide range of applications can be supported, some constraints are applied to the permitted bitstream structure and to bitstream parameter settings.
Dolby Digital Plus and MPEG-DASHThese topics provide guidance to assist you in meeting the requirements for delivering Dolby Digital Plus streams using the MPEG-DASH standard in conjunction with the ISO base media file format.
Dolby Digital Plus and HTTP Live StreamingThis section specifies the required data formatting and signaling between the server (sender) and the clients (receivers) to use Dolby Digital Plus audio bitstreams in Apple HTTP Live Streaming audio/video (A/V) delivery applications.
Dolby Digital Plus and ISO base media file formatThis section describes the process of analyzing and preparing a Dolby Digital Plus bitstream for online delivery within an ISO base media file.
Glossary
Notices

Channel abbreviations

This table lists the channel notations used in this document.

Abbreviation	Channel
L	Left
R	Right
C	Center
Lc	Left Center
Rc	Right Center
LFE	Low-Frequency Effects
Lfh	Left Front Height
Rfh	Right Front Height
S	Mono Surround
Cs	Center Surround
Ls	Left Surround
Rs	Right Surround
Lscr	Left Screen
Rscr	Right Screen
Lsd	Left Surround Direct
Rsd	Right Surround Direct
Lb^[a]	Left Back
Rb ^[a]	Right Back
Lvh	Left Vertical Height
Cvh	Center Vertical Height
Rvh	Right Vertical Height
Lrs	Left Rear Surround
Rrs	Right Rear Surround
Lw	Left Wide
Rw	Right Wide
Tbl	Top Back Left
Tbr	Top Back Right
Tfl	Top Front Left
Tfr	Top Front Right
Tl	Top Left
Tr	Top Right
Ts	Top Surround
Ltm	Left Top Middle
Rtm	Right Top Middle
Lts	Left Top Surround
Rts	Right Top Surround
SW	Subwoofer speaker output

[a] Lb and Rb correspond to the SMPTE-defined Lrs and Rrs channels.