Presentation for MPEG DASH. Comparison between similar HTTP based adaptive streaming. Some description for MPEG DASH Standards.

2. • Adaptive HTTP Streaming
– Get input as high quality media content (bitrate, resolution, etc)
– Convert that to multiple versions of same content
(e.g. bitrates and resolutions)
– Store chopped content in Web Server
– Generate and store metadata (aka Manifest File)
• Temporal and structural information for the media content
– Client accesses metadata first and retrieves contents based on
its conditions (e.g. network and device profiles)
Metadata
Segments/Chunks

3. • Existing adaptive HTTP streaming
– Adobe HTTP Dynamic Streaming (HDS),
– Microsoft Smooth Streaming (MSS),
– Apple HTTP Live Streaming (HLS),
– MPEG Dynamic Adaptive Streaming
over HTTP (MPEG-DASH)
Proprietary
International
standard

4. https://bitmovin.com/mpeg-dash-vs-apple-hls-vs-microsoft-smooth-streaming-vs-adobe-hds/

5. • Efficient Ad Insertion
– Segment Changes
• Fast Channel Switching
– Directly related to the chunk size
• HLS (10s), HDS/SS/DASH (2 and 4s)
– Lower overhead of the MP4 format instead of MP2TS
– Small GOP and lower coding efficiency
• HEVC supports
– Some others are evolving, but others are not.
• Multiview support
– Multiple views angles through AdaptationSets

6. http://www.slideshare.net/christian.timmerer/adaptive-media-streaming-
the-role-of-standards-62657526

7. • The Media Presentation Description (MPD)
– Format to announce resource identifiers (HTTP-URLs) for Segments
(media chunks)
– To provide the context for these identified resources within a Media
Presentation
• The Segment formats
– Specify the formats of the entity body of the HTTP response to an
HTTP GET request or a partial HTTP GET with the indicated byte
range using HTTP/1.1 to a resource identified in the MPD.
http://ride.chiariglione.org/coping-with-an-unpredictable-internet/

9. http://ride.chiariglione.org/coping-with-an-unpredictable-internet/

10. • Set of restrictions on the offered Media
Presentation (MPD & Segments)
https://tech.ebu.ch/docs/events/webinar043-mpeg-
dash/presentations/ebu_mpeg-dash_webinar043.pdf

11. • Adaptive HTTP Streaming
– HDS, HLS, MSS and DASH
• Benefit of DASH
– Easy to deploy, Flexible, Elastic Standard
• Coverage of DASH Standard
– MPD and Segment format
• MPD
– Period, AdaptationSet, Representation, Segment
• DASH Profiles
– Supports MP2 TS and ISO BMFF

13. http://www.slideshare.net/christian.timmerer/over-the-top-content-
delivery-state-of-the-art-and-challenges-ahead

14. http://www.slideshare.net/christian.timmerer/over-the-top-content-delivery-state-
of-the-art-and-challenges-ahead

15. <?xml version="1.0" encoding="UTF-8"?>
<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_15s/</BaseURL>
<Period start="PT0S">
<AdaptationSet bitstreamSwitching="true">
<Representation id="0" codecs="avc1" mimeType="video/mp4" width="320" height="240" startWithSAP="1" bandwidth="45351">
<SegmentBase>
<Initialization sourceURL="bunny_15s_50kbit/bunny_50kbit_dash.mp4"/>
</SegmentBase>
<SegmentList duration="15">
<SegmentURL media="bunny_15s_50kbit/bunny_15s1.m4s"/>
<SegmentURL media="bunny_15s_50kbit/bunny_15s2.m4s"/>
<!-- ... -->
<SegmentURL media="bunny_15s_50kbit/bunny_15s39.m4s"/>
<SegmentURL media="bunny_15s_50kbit/bunny_15s40.m4s"/>
</SegmentList>
</Representation>
<Representation id="1" codecs="avc1" mimeType="video/mp4" width="320" height="240" startWithSAP="1" bandwidth="88563">
<SegmentBase>
<Initialization sourceURL="bunny_15s_100kbit/bunny_100kbit_dash.mp4"/>
</SegmentBase>
<SegmentList duration="15">
<SegmentURL media="bunny_15s_100kbit/bunny_15s1.m4s"/>
<SegmentURL media="bunny_15s_100kbit/bunny_15s2.m4s"/>
<!-- ... -->
<SegmentURL media="bunny_15s_100kbit/bunny_15s39.m4s"/>
<SegmentURL media="bunny_15s_100kbit/bunny_15s40.m4s"/>
</SegmentList>
</Representation>
<!-- ... -->
</AdaptationSet>
</Period>
</MPD>