MPEG's Dynamic Adaptive Streaming over HTTP (DASH ...

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More Information • Draft Specifications – 14496-12:2008/FDAM-3: http://www.3gpp.org/ftp/Inbox/LSs_from_external_bodies/ISO_IE C_JTC1_SG29_WG11/29n12310.zip – 23001-7: http://www.3gpp.org/ftp/Inbox/LSs_from_external_bodies/ISO_IE C_JTC1_SG29_WG11/29n12313.zip – 23009-1: http://www.3gpp.org/ftp/Inbox/LSs_from_external_bodies/ISO_IE C_JTC1_SG29_WG11/29n12316.zip • More information from Qualcomm including Qualcomm‘s licensing position – http://www.qualcomm.com/blog/2011/08/16/dash-towardbetter-mobile-video-user-experience • Several other companies have declared or expressed willingness to declare favorable licensing conditions 52
Your Questions • Why is the live profile most popular even for on demand deliver? • How does subtitling work (outside or inside container)? • Is there language support available? • What trick modes are supported in live and on demand profiles? • What are the minimal common features supported for different clients (interoperability between Silverlight, Flash, IOS, etc.)? • Are extra server side components needed for the live or on demand profile? • Is there an impact analysis available from encoding to distribution? • What are the best practices around segmentation? • What are the implications of MPEG TS or ISO base media file format? • What is the preferred profile to distribute both live an on demand (presuming broadcasters want one infrastructure meaning one file base and on streaming platform). • Are there show cases and test streams available? • How much is work is it to support more/all profiles? • What is the latency? • What is the target of the bandwidth, are there limitations to take into account? • Scalability is the same for MPEG <strong>DASH</strong> (cashing and so on) compared to HLS streaming? • What are the security / encryption possibilities? Probably common encryption format is supported? • If there is no encryption is available, how easy is it to copy/download files? 53
Page 1: MPEG's Dynamic Adaptive Streaming o
Page 4 and 5: Video is dominating the Internet
Page 6 and 7: MPEG DASH ISO/IEC 23009-1 • MPEG
Page 8 and 9: DASH in a Nutshell • What: Video
Page 10 and 11: (Some) DASH Design Principles • D
Page 12 and 13: What is specified - and what is not
Page 14 and 15: Media Presentation Data Model • M
Page 17 and 18: Key feature - Common Timeline • R
Page 19 and 20: 250 Kbps 500 Kbps 1 Mbps Segment
Page 21 and 22: Example for Role and Viewpoint 2 vi
Page 23 and 24: Preferable Switch Points • Segmen
Page 25 and 26: Segments • ISO/IEC 23009 focuses
Page 27 and 28: Segment Index 27
Page 29 and 30: Segment and Subsegment Index for MP
Page 31 and 32: Full Profile Profiles • Set of re
Page 33 and 34: Profile identifier: ISO BMFF On-dem
Page 35 and 36: Profile identifier: ISO BMFF live T
Page 37 and 38: MPEG-2 TS simple Component Descript
Page 39 and 40: 23009-2 TEST VECTORS AND CONFORMANC
Page 41 and 42: RELATIONSHIP TO 3GPP TS26.247 DASH
Page 43 and 44: Remaining Work for 3GPP • Rel-9 A
Page 45 and 46: Typical Uses Cases • MPEG-DASH su
Page 47 and 48: DASH Promoters Group • Informal c
Page 49 and 50: HTML-5 and DASH • Continuous disc
Page 51: Some Research Challenges • Client

MPEG's Dynamic Adaptive Streaming over HTTP (DASH ...

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