Media Presentation Description with Dolby Digital Plus

This section defines the values that enable an MPD to properly describe a Dolby Digital Plus bitstream.

Although the syntax of the MPD is capable of using common XML elements to describe almost any media format, the encoding type and the configuration of a Dolby Digital Plus bitstream that is part of a content presentation constrain the parameter values of some of these elements.

The MPD supports these scenarios:

  • Media presentations that consist of a single Dolby Digital Plus bitstream
  • Media presentations that consist of multiple Dolby Digital Plus bitstreams, with each bitstream stored in a separate MP4 file or segment file

It is possible for the MPD to describe multiple audio services delivered using multiple Dolby Digital Plus bitstreams (for example, a main audio service and an associated audio service that are intended to be decoded and then mixed together).