We are receiving Daniel Negru and Joachim Bruneau-Queyreix from the LaBRI, University of Bordeaux, this week (9 and 10 of June).
In this context, Thursday, June 9 at 14:00 in room Minquiers (B025), we will have two talks: one by Joachim Bruneau-Queyreix and one by Davide Frey.
- Joachim Bruneau-Queyreix
- Davide Frey
Title: DASH evolution for Quality of Experience Enhancement via On-Demand Multiple-Server Support: A game-changer for future content delivery solution
Abstract:
Adaptive bitrate streaming protocols, such as DASH, have seen extensive interest for their adaptation capabilities towards end-users Quality of Experience (QoE) increase. In this talk, we will present our solution to enrich DASH potential with multiple-server features and to take advantage of expanded bandwidth, link diversity, and reliability. Thanks to its codec agnosticism, DASH-compliance, and receiver-driven philosophy, our contribution is a pragmatic and evolving solution for QoE enhancement that can be applied to many streaming architectures (P2P, CDNs, Clouds). By splitting content into multiple independent and aggregatable sub-streams, we achieve easy-to-design content- and server- adaptation mechanisms for high QoE increase. We empirically validate our approach using an extensive collection of network profiles provided by the DASH Industry Forum. Comparison with the full potential of DASH in a multi-source environment is also performed over several criteria, resulting in very important QoE gains.
Enabling multiple-server adaptive streaming solutions over HTTP represents a key feature in bringing new content delivery solutions (i.e. Set-Top Box overlays, collaboration of multiple actors of the content delivery chain, CDN/Cloud/peer-based solutions) to the market for high and ultra-high definition streaming (VoD, OTT-TV, UGC, UGC-broadcasting events). Further discussion on potential impacts of multiple-server DASH in existing and future content delivery solutions will be held. An online demonstration of this work will also be presented.
Title: Live Streaming with Gossip
Abstract:
Video streaming has become the new killer application for peer-to-peer technologies. By aggregating scarce resources such as upload bandwidth, decentralized video streaming protocols make it possible to serve a video stream to huge numbers of users while requiring very limited investments from broadcasters. In this talk, we discuss gossip-based video streaming, and present HEAP, Heterogeneity-Aware gossip Protocol. HEAP (HEterogeneity-Aware gossip Protocol) incorporates several features that improve the standard gossip-based protocols used in video-streaming applications. First it includes a fanout adaptation mechanism that tunes the contribution of nodes to the streaming process based on their bandwidth capability. Second, it comprises heuristics that improve reliability, as well as operation in the presence of heterogeneous network latency. We evaluate HEAP on a real deployment on the Grid5000 platform. Results show that HEAP significantly improves the quality of the streaming over standard homogeneous gossip protocols, especially when the stream rate is close to the average available bandwidth.