Adap3ve Media Streaming over Emerging Protocols

Transcription

1 WE MAKE YOUR VIDEOS FLOW Industry Leading Streaming Solu3ons Adap3ve Media Streaming over Emerging Protocols 2014 NAB Show Broadcast Engineering Conference April 7, Las Vegas, NV, USA Dipl.- Ing. Dr. Chris&an Timmerer CIO bitmovin GmbH & Alpen- Adria- Universität Klagenfurt blog.3mmerer.com

2 Mo&va&on 1 Video Predominant on the Internet Real- 3me video: > 50% of the traffic Mainly delivered over the top using HTTP 2h2013, hzps:// internet- phenomena/... but the user frustra&on is s&ll high! Let s do something

3 Dynamic Adap3ve Streaming over HTTP 2 DASH DIFFERENT QUALITY REPRESENTATIONS CHANGING BANDWITH CHOOSE THE APPROPRIATE SEGMENT HTTP SERVER WITH VIDEO CONTENT NETWORK WITH VARIABLE BANDWITH (INTERNET) USER WITH TABLET QUALITY BANDWIDTH QUALITY best med low best TIME TIME med low ISO/IEC MPEG Standard [ISO/IEC 23009] Media presenta3on descrip3on (MPD) and segment formats (ISOBMFF, M2TS) Dynamic adap3on to the usage environment Usage of exis3ng Internet infrastructure Adapta3on logic & intelligence at the client Flexibility and scalability TIME

4 DASH/2.0 DASH/2.0 3 MPEG- DASH adopts HTTP- URLs to iden3fy segments within the MPD but does not mandate its usage does not mandate a version HTTP/2.0 currently under development within IETF (based on SPDY) Based on TCP, single persistent connec3on Allows mul3ple streams between client & server Exchange of frames, compa3ble with HTTP/1.1

5 DASH/2.0 Client Support Clients 4 MPEG- DASH VLC plugin World first MPEG- DASH implementa3on Open source, part of well- know VLC hzp://dash.itec.aau.at libdash tree/hzp2 MPEG- DASH reference sokware Open source & sample player hzp://bitmovin.com/libdash Basis for products, e.g., bitdash Adapta3on logic with +100% throughput

6 Performance Evalua3on Performance 5 Average Media Throughput using SPDY given a predefined Bandwidth Trajectory for different RTTs

7 Content- Centric Networking CCN 6 From a host- centric to the content- centric approach Addressing loca3on vs. content Different terminology: ICN, NDN, CCN CCN approach Interest packet: request for content Data packet: delivery of content Network ac3vely par3cipates in the delivery CCN features Na3ve support for content caching Loca3on independence Mul3- path, mul3- source delivery Security and trust as an integral part of the network

8 DASH and CCN := DASC DASC 7 Common elements Client- ini3ated pull approach Content being dealt with in pieces (segments, chunks) Two op3ons for integra3on Proxy service ac3ng as a broker between HTTP and CCN DASH client implemen3ng a na3ve CCN interface Na3ve approach enabled by DASH CCN naming scheme (CCN URIs)

9 DASC Client Support Clients 8 MPEG- DASH VLC plugin World first MPEG- DASH implementa3on Open source, part of well- know VLC hzp://dash.itec.aau.at libdash tree/ccn MPEG- DASH reference sokware Open source & sample player hzp://bitmovin.com/libdash Basis for products, e.g., bitdash Adapta3on logic with +100% throughput

10 Performance Evalua3on Performance 9 Average Media Throughput using CCN given a predefined Bandwidth Trajectory for different RTTs

11 Conclusions Conclusions 10 DASH/2.0 HTTP/2.0 (SPDY) ~ HTTP/1.1 with persistent connec3ons & request pipelining Implicitly solves Head- of- Line blocking problem HTTP/2.0: IETF hzpbis WG, proposed standard by end of 2014 DASC It works, performance comparable but Improvements: request pipelining, caching, encryp3on/signing ICNRG within IRTF Join this ac3vity, everyone is invited get involved in and exited about DASH! Tuesday, April 8, 2-4 pm Renaissance Hotel, adjacent to the LVCC hzp://

12 WE MAKE YOUR VIDEOS FLOW Industry Leading Streaming Solu3ons Bitmovin We make your media flow Bitdash/Libdash bitmovin GmbH Lakeside Science and Technology Park Building B Klagenfurt Austria Europe T E office@bitmovin.net facebook.com/bitmovin github.com/bitmovin