MPEG-DASH Media Presentation Description file

A Media Presentation Description (MPD) file is a hierarchical XML document that provides information for an MPEG-DASH client about the available content for a media presentation.

The media presentation contains the encoded audio and video streams that are segmented into chunks for online delivery. The MPD is a manifest of the available content, which describes the configuration of the content, potentially available content alternatives, the location of the content (URLs), and other characteristics (including timing information and media characteristics such as video resolution and bit rates).

The MPEG-DASH client uses the information in the MPD for constructing the HTTP URLs that then allow it to access segments containing the actual audio and video content.