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Requirements and recommendations A product that supports playback of Dolby Digital Plus bitstreams contained in an online delivery format must meet all defined requirements. The recommendations assist you to build a high-quality product.
HTTP Live Streaming recommendationsRecommendations are provided for a product that supports playback of HTTP Live Streaming content with Dolby Digital Plus.

Introduction to the playback system development manualThis document supports the system designers and engineers who are building a playback product. It lists the requirements for decoding and playing back Dolby Digital Plus content in such a product and provides guidance to help in meeting the requirements.
Product overviewA typical product built and tested using the resources in this kit decodes and plays back Dolby Digital Plus content contained in an online container that supports adaptive streaming.
Requirements and recommendations A product that supports playback of Dolby Digital Plus bitstreams contained in an online delivery format must meet all defined requirements. The recommendations assist you to build a high-quality product.
- General and core processing requirementsA product that supports playback of Dolby Digital Plus bitstreams contained in an online delivery format must meet these general requirements.
- MPEG-DASH requirementsA product that supports playback of MPEG-DASH content with Dolby Digital Plus must meet these requirements.
- MPEG-DASH recommendationsRecommendations are provided for a product that supports playback of MPEG-DASH content with Dolby Digital Plus.
- HTTP Live Streaming recommendationsRecommendations are provided for a product that supports playback of HTTP Live Streaming content with Dolby Digital Plus.
Dolby Digital Plus streams in online delivery formatThe 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 playing back 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 an online delivered Dolby Digital Plus bitstream carried within an ISO base media file.
Glossary
Notices

HTTP Live Streaming recommendations

Recommendations are provided for a product that supports playback of HTTP Live Streaming content with Dolby Digital Plus.

Demux-18

When encountering a Dolby Digital Plus bitstream error, the product continues to demultiplex the Dolby Digital Plus bitstream with the error properly concealed (for example, with the audio output muted). Decoding resumes automatically within 50 ms once a valid Dolby Digital Plus bitstream is detected.

Demux-29

Identifies a Dolby Digital Plus bitstream in a transport stream when the packet header has stream_type set to 0x87 and stream_id set to 1011 1101b (private_stream_1). See Dolby Digital Plus bitstream identification in an MPEG-2 transport stream.

Demux-30

Parses the bitstream data contained in the E-AC-3_audio_descriptor(). See Syntax of the Enhanced AC-3 descriptor.

Demux-31

Identifies a Dolby Digital Plus bitstream in a playlist file when the #EXT-X-STREAM-INF parameter CODEC attribute value is ec-3. See Codec type indication for Dolby Digital Plus .

Demux-34

A product that supports switching between different languages is able to decode each available language variant registered with the #EXT-X-MEDIA parameter in a playlist file.

Demux-35

Is able to decode each Dolby Digital Plus variant indicated in the #EXT-X-MEDIA parameter of a playlist file.

Demux-36

Is able to decode each bit-rate version of content indicated by the XT-X-STREAM-INF parameter in a playlist file.

HDMI-20

A product that provides output via HDMI sends Dolby Digital Plus bitstreams with Dolby Atmos content over the HDMI output by default if the downstream device is capable of decoding Dolby Digital Plus.

Media-11

A system that supports the Apple HLS delivery format also supports demultiplexing and playback of Dolby Digital Plus and Dolby Digital content delivered in an MPEG-2 transport stream.

Mix-9

Provides a control to turn dual decoding on and off.

UI-Ctrl-25

Provides a control to select the language of an audio program when alternate programs are available.

UI-Ctrl-30

Provides a user interface that enables users to select online media content to play.

UI-Ctrl-31

A product that supports different audio codecs provides a user interface that enables users to select a Dolby Digital Plus variant before playback.

UI-Ctrl-40

Supports standard seeking operations with low latency including specifying a position and displaying elapsed and remaining time.