Towards Bandwidth Efficient Adaptive Streaming of Omnidirectional Video over HTTP: Design, Implementation, and Evaluation

@inproceedings{Graf2017TowardsBE,
  title={Towards Bandwidth Efficient Adaptive Streaming of Omnidirectional Video over HTTP: Design, Implementation, and Evaluation},
  author={Mario Graf and Christian Timmerer and Christopher M{\"u}ller},
  booktitle={MMSys},
  year={2017}
}
Real-time entertainment services such as streaming audiovisual content deployed over the open, unmanaged Internet account now for more than 70% during peak periods. More and more such bandwidth hungry applications and services are proposed like immersive media services such as virtual reality and, specifically omnidirectional/360-degree videos. The adaptive streaming of omnidirectional video over HTTP imposes an important challenge on today's video delivery infrastructures which calls for… CONTINUE READING

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Key Quantitative Results

  • Real-time entertainment services such as streaming audiovisual content deployed over the open, unmanaged Internet account now for more than 70% during peak periods.
  • The results indicate bitrate savings from 40% (in a realistic scenario with recorded head movements from real users) up to 65% (in an ideal scenario with a centered/fixed viewport) and serve as a baseline and guidelines for advanced techniques including the outline of a research roadmap for the near future.
  • It clearly shows that partial delivery can reduce the bandwidth requirements by more than 75% compared to the current, state-of-the-art deployments in omnidirectional video streaming.
  • The streaming strategy full delivery basic achieves a bandwidth saving by approximately 65% and can be seen as a benchmark for any advanced mechanisms which are subject to future work.
  • We have formulated a variety of streaming strategies and provided a baseline evaluation to demonstrate the feasibility of tiled streaming achieving bitrate savings up to approximately 65% when applied in a realistic scenario and compared with state-of-the-art techniques. Finally, we conducted an evaluation adopting viewport PSNR based on recorded head movements achieving bitrate savings up to 40%.

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