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Research and development of MPEG-DASH system for mobile devices

Research Project

Project/Area Number 17K00144
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Information network
Research InstitutionOsaka Electro-Communication University

Principal Investigator

Hisamatsu Hiroyuki  大阪電気通信大学, 総合情報学部, 准教授 (90434802)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords動画像ストリーミング / WebRTC / 低遅延ストリーミング / MPEG-DASH / ストリーミング / TCP / ネットワーク / anticipatory networking
Outline of Final Research Achievements

In this work, we have considered and developed a method for low-latency live streaming that can be used on mobile devices. The proposed system uses WebRTC, which is the current standard in current browsers. The system uses the same publishing way as the media encoders used in the previous streaming system. Our method allows the system to run on mobile devices with even lower latency. When the quality of the delivery falls off in the network, the proposed system changes to a different quality of delivery as a fallback. Furthermore, we have evaluated the proposed system in a real network environment. As the result of the evaluation, we have shown its effectiveness. Specifically, it has been clear that the proposed system will limit the delay between sender and viewer to about one second. We also have shown that our system switches the streaming quality appropriately when the network bandwidth gets smaller and larger.

Academic Significance and Societal Importance of the Research Achievements

ネットワークの広帯域化により、動画像ストリーミングサービスが普及しており、これらのトラヒックは増加を続けている。また、モバイル端末による動画像ストリーミングの視聴数は飛躍的に増加している。すなわち、今後のインターネットにおいて、モバイル端末を対象とした動画像ストリーミングは、今後、最も用いられるアプリケーションであり、その研究開発は重要である。
また、本研究では、全く新しいネットワークシステムを構築するのではなく、既存の構成の配信者、サーバ、視聴者から構成されることを前提としており、現実的なシステムとなっていることに、意義がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (2 results)

All 2020 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] Proposal for a Course Support System for Database Exercises2018

    • Author(s)
      Kunimoto Rimpei、Hisamatsu Hiroyuki
    • Journal Title

      Proceedings of the 6th International Conference on Information Technology: IoT and Smart City

      Volume: N/A Pages: 256-260

    • DOI

      10.1145/3301551.3301594

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] WebRTCを用いた低遅延ライブストリーミング方式の検討2020

    • Author(s)
      木下透弥
    • Organizer
      電気学会・情報システム研究会
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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