Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming最新文献

LwTE-Live: Light-weight Transcoding at the Edge for Live Streaming lte -Live:在直播流的边缘轻量级转码

Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming Pub Date : 2021-12-07 DOI: 10.1145/3488662.3493829

A. Erfanian, Hadi Amirpour, F. Tashtarian, C. Timmerer, H. Hellwagner

{"title":"LwTE-Live: Light-weight Transcoding at the Edge for Live Streaming","authors":"A. Erfanian, Hadi Amirpour, F. Tashtarian, C. Timmerer, H. Hellwagner","doi":"10.1145/3488662.3493829","DOIUrl":"https://doi.org/10.1145/3488662.3493829","url":null,"abstract":"Live video streaming is widely embraced in video services, and its applications have attracted much attention in recent years. The increased number of users demanding high quality (e.g., 4K resolution) live videos increases the bandwidth utilization in the backhaul network. To decrease bandwidth utilization in HTTP Adaptive Streaming (HAS), in on-the-fly transcoding approaches, only the highest bitrate representation is delivered to the edge, and other representations are generated by transcoding at the edge. However, this approach is inefficient due to the high transcoding cost. In this paper, we propose a light-weight transcoding at the edge method for live applications, LwTE-Live, to decrease the bandwidth utilization and the overall live streaming cost. During the encoding processes at the origin server, the optimal encoding decisions are saved as metadata and the metadata replaces the corresponding representation in the bitrate ladder. The significantly reduced size of the metadata compared to its corresponding representation decreases the bandwidth utilization. The extracted metadata is then utilized at the edge to decrease the transcoding time. We formulate the problem as a Mixed-Binary Linear Programming (MBLP) model to optimize the live streaming cost, including the bandwidth and computation costs. We compare the proposed model with state-of-the-art approaches, and the experimental results show that our proposed method saves the cost and backhaul bandwidth utilization up to 34% and 45%, respectively.","PeriodicalId":118390,"journal":{"name":"Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121776796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

An ML-Based Approach for Near Real-Time Content Caching 基于机器学习的近实时内容缓存方法

Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming Pub Date : 2021-12-07 DOI: 10.1145/3488662.3498658

Dimas S. Lima, B. Oliveira, P. Mendes, Lucas Costa, Yago Coelho

引用次数: 1

PRISM based Transport: How Networks can Boost QoS for Advanced Video Services? 基于PRISM的传输:网络如何提高高级视频服务的QoS ?

Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming Pub Date : 2021-12-07 DOI: 10.1145/3488662.3493826

Neta Rozen Schiff, Amit Navon, L. Bruckman, Itzcak Pechtalt

{"title":"PRISM based Transport: How Networks can Boost QoS for Advanced Video Services?","authors":"Neta Rozen Schiff, Amit Navon, L. Bruckman, Itzcak Pechtalt","doi":"10.1145/3488662.3493826","DOIUrl":"https://doi.org/10.1145/3488662.3493826","url":null,"abstract":"Future applications and services will challenge the network infrastructure with unprecedented demands for high bandwidth, low latency and reliable communication. Moreover, popularity of applications requiring several function-alities such as control, telemetry, video and audio, each with its own requirements, is constantly increasing. For example, an interactive video service control requires low bandwidth and low latency while its 4K video flows require high bandwidth and moderate latency. Today's transport protocols do not address heterogeneous requirements. Instead, only bandwidth allocation is provided by congestion control schemes, which support up to two priorities. This limitation impairs Quality of Service (QoS) since it does not satisfy flow latency and bandwidth requirements in parallel. The overall QoS assurance is mainly handled by the application layer that usually reduce the video stream quality. We present PRISM, a new transport protocol on top of IP, which provides per flow granular and dynamic quality of service. PRISM applies state-of-the-art congestion control schemes (such as BBR, Proteus, Cubic) to allocate bandwidth. In addition, PRISM addresses reliability and latency requirements and couples flows from the same application together, enabling inter-flow synchronization. In experiments with a kernel implementation on emulated networks, dense camera grid applications' requirements were fulfilled by using PRISM, while the current transport protocols failed to satisfy all requirements. Furthermore, PRISM reduced establishment latency by a factor of up to 1000 compared to multiple TCP.","PeriodicalId":118390,"journal":{"name":"Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131286945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Learning-driven MU-MIMO Grouping for Multi-User Multimedia Applications Over Commodity WiFi 商用WiFi上多用户多媒体应用的学习驱动MU-MIMO分组

Proceedings of the Workshop on Design, Deployment, and Evaluation of Network-assisted Video Streaming Pub Date : 2021-12-07 DOI: 10.1145/3488662.3493828

H. Pasandi, Hadi Amirpour, T. Nadeem, C. Timmerer

引用次数: 1