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MDP
Media Presentation Description, as mentioned before is a XML file. It is located in the server along with the media content it describes. Below is part of the file as presented at http://www-itec.uni-klu.ac.at/ftp/datasets/mmsys12/BigBuckBunny/bunny_2s_480p_only/bunny_Desktop.mpd Universität Klagenfurt
This file defines:
- base URL - The URL/folder where the chunks are stored
- Segment URL - Where each segment in particular can be found. This is relative to the Base URL
- Representation - Presentation Parameters such as codecs, type, width, hight etc.
- Duration and also Bitrate
<MPD xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:mpeg:DASH:schema:MPD:2011" xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011" profiles="urn:mpeg:dash:profile:isoff-main:2011" type="static" mediaPresentationDuration="PT0H9M56.46S" minBufferTime="PT15.0S"> <BaseURL> http://www-itec.uni-klu.ac.at/ftp/datasets/mmsys12/BigBuckBunny/bunny_2s_480p_only/ </BaseURL> <Period start="PT0S"> <AdaptationSet bitstreamSwitching="true"> <Representation id="0" codecs="avc1" mimeType="video/mp4" width="480" height="360" startWithSAP="1" bandwidth="101492"> <SegmentBase> <Initialization sourceURL="bunny_2s_100kbit/bunny_480_100kbit_dash.mp4"/> </SegmentBase> <SegmentList duration="2"> <SegmentURL media="bunny_2s_100kbit/bunny_2s1.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s2.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s3.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s4.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s5.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s6.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s7.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s8.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s9.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s10.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s11.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s12.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s13.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s14.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s15.m4s"/> <SegmentURL media="bunny_2s_100kbit/bunny_2s16.m4s"/> ........
