Content Generation and Practical Applications for Dynamic Adaptive Streaming over HTTP with a Focus on Mobile and Peer-Assisted Streaming

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Content Generation and Practical Applications for Dynamic Adaptive Streaming over HTTP with a Focus on Mobile and Peer-Assisted Streaming

  1. 1. Stefan Lederer Fö rd e r ve re i n Te c h n i s c h e Fa ku l tät Content Generation and Practical Applications for Dynamic Adaptive Streaming over HTTP with a Focus on Mobile and Peer-Assisted Streaming
  2. 2. Motivation • HTTP Streaming has become very popular on the Internet – Various different bitrates of the video are available on the server --> choose the best version to load – Easy to use existing CDN structure – No NAT/Firewall issues due to HTTP – Various technologies • BUT: no standard in use! FTI | Stefan Lederer Slide 2
  3. 3. DASH Dataset Sequences FTI | Stefan Lederer Slide 3
  4. 4. Vehicular Environment & Test Tracks • Autobahn: Villach-Klagenfurt • Connection: A1 Mobile Internet USB Stick GPRS to HSDPA FTI | Stefan Lederer Slide 4
  5. 5. Results: MS Smooth Streaming 30 sec. Buffer, smooth representation switch FTI | Stefan Lederer Slide 5
  6. 6. Results: Apple HTTP Live Streaming Transmission pause, pretty constant quality FTI | Stefan Lederer Slide 6
  7. 7. Results: Adobe Dynamic Streaming Not suitable, BUT: Incremental Buffer Size FTI | Stefan Lederer Slide 7
  8. 8. Results: MPEG DASH with Pipelining Tries go get best quality, too many switches FTI | Stefan Lederer Slide 8
  9. 9. Results Comparison Name Average Bitrate [kbps] Average Switches [Number of Switches] Average Unsmoothness [Seconds] Microsoft 1522 51 0 Adobe 1239 97 64 Apple 1162 7 0 MPEG – DASH 1464 166 0 FTI | Stefan Lederer Slide 9
  10. 10. Peer Assisted Streaming FTI | Stefan Lederer Slide 10
  11. 11. Simulation Results - Server - 25 % FTI | Stefan Lederer Slide 11
  12. 12. The END http://dash.itec.aau.at

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