Vibra: neural adaptive streaming of VBR-encoded videos

Gangqiang Zhou, Run Wu, Miao Hu*, Yipeng Zhou, Tom Z. J. Fu, Di Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

5 Citations (Scopus)

Abstract

Variable Bitrate (VBR) video encoding can provide much high quality-To-bits ratio compared to the widely adopted Constant Bitrate (CBR) encoding, and thus receives significant attentions by content providers in recent years. However, it is challenging to design efficient adaptive bitrate algorithms for VBR-encoded videos due to the sharply fluctuating chunk size and the resulting bitrate burstiness. In this paper, we propose a neural adaptive streaming framework called Vibra for VBR-encoded videos, which can well accommodate the high fluctuation of video chunk sizes and improve the quality-of-experience (QoE) of end users significantly. Our framework takes the characteristics of VBR-encoded videos into account, and adopts the technique of deep reinforcement learning to train a model for bitrate adaptation. We also conduct extensive trace-driven experiments, and the results show that Vibra outperforms the state-of-The-Art ABR algorithms with an improvement of 8.17%-29.21% in terms of the average QoE.

Original languageEnglish
Title of host publicationNOSSDAV 2021 - Proceedings of the 2021 Workshop on Network and Operating System Support for Digital Audio and Video, Part of MMSys 2021
Place of PublicationNew York, NY
PublisherAssociation for Computing Machinery, Inc
Pages2-8
Number of pages7
ISBN (Electronic)9781450384353
DOIs
Publication statusPublished - 2021
Event31st ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2021 - Virtual, Online, Turkey
Duration: 28 Sept 20211 Oct 2021

Conference

Conference31st ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2021
Country/TerritoryTurkey
CityVirtual, Online
Period28/09/211/10/21

Keywords

  • adaptive bitrate
  • reinforcement learning
  • VBR-encoded video
  • video streaming

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