[4] | Christian Timmerer, Ali Cengiz Begen, Over the Top Content Delivery: State of the Art and Challenges Ahead, In Proceedings of the 2014 ACM Multimedia Conference (Kien Hua, Yong Rui, Ralf Steinmetz, Alan Hanjalic, Apostol Natsev, Wenwu Zhu, eds.), ACM, New York, NY, USA, pp. 1231-1232, 2014.
[bib] [doi] [pdf] [slides] [abstract]
Abstract: In this tutorial we present state of the art and challenges ahead in over-the-top content delivery. It particular, the goal of this tutorial is to provide an overview of adaptive media delivery, specifically in the context of HTTP adaptive streaming (HAS) including the recently ratified MPEG-DASH standard. The main focus of the tutorial will be on the common problems in HAS deployments such as client design, QoE optimization, multi-screen and hybrid delivery scenarios, and synchronization issues. For each problem, we will examine proposed solutions along with their pros and cons. In the last part of the tutorial, we will look into the open issues and review the work-in-progress and future research directions.
|
[3] | Christopher Mueller, Stefan Lederer, Christian Timmerer, Fair Share Dynamic Adaptive Streaming over HTTP, In IEEE Multimedia Communications Technical Committee E-Letter, IEEE Communications Society [online], vol. 8, no. 2, New York, NY, USA, pp. 30-33, 2013.
[bib][url] [pdf] [abstract]
Abstract: Multimedia delivery over the Hypertext Transfer Protocol (HTTP) is currently very popular and with MPEGs' Dynamic Adaptive Streaming over HTTP (DASH) a standard is available to provide interoperability and enable large-scale deployments using existing infrastructures (servers, proxies, caches, etc.). This paper identifies some issue when multiple DASH clients compete for a bandwidth bottleneck when transparent proxy caches are deployed. Therefore, we propose a fair share adaptation scheme to be included within the client which – through experimental results – achieve a more efficient utilization of the bottleneck bandwidth and less quality switches.
|
[2] | Stefan Lederer, Christopher Mueller, Benjamin Rainer, Christian Timmerer, Hermann Hellwagner, Adaptive Streaming over Content Centric Networks in Mobile Networks using Multiple Links, In In Proceedings of the IEEE ICC'13 - Workshop on Immersive & Interactive Multimedia Communications over the Future Internet (Pedro Assuncao, Luigi Atzori, Tasos Dagiuklas, Ahmet Kondoz, eds.), IEEE, Budapest, pp. 687-691, 2013.
[bib][url] [pdf] [abstract]
Abstract: This paper presents the usage of Content Centric Networking (CCN) for adaptive multimedia streaming in mobile environments, leveraging the recent ISO/IEC MPEG Dynamic Adaptive Streaming over HTTP (DASH) standard. The performance of DASH over CCN is evaluated using real-world mobile bandwidth traces and compared to previous evaluations of different DASH-based as well as proprietary systems. As there are no client-server connections in CCN, it offers the possibility to transfer data from multiple sources as well as over multiple links in parallel, which is definitely an important feature, e.g., for mobile devices offering multiple network links. This functionality is used and evaluated in this paper in combination with DASH, making it possible to dynamically choose the best performing link for media streaming, which is a clear advantage over DASH using HTTP and the TCP/IP protocol stack. The evaluation therefore investigates DASH over CCN in two scenarios using synthetic and real-world mobile bandwidth traces respectively, showing a significantly better performance than conventional DASH using only one connection.
|
[1] | Christopher Mueller, Christian Timmerer, A VLC media player plugin enabling dynamic adaptive streaming over HTTP, In Proceedings of the 19th ACM international conference on Multimedia (Kasim Selcuk Candan, Sethuraman Panchanathan, Balakrishnan Prabhakaran, Hari Sundaram, Wu-Chi Feng, Nicu Sebe, eds.), ACM, New York, NY, USA, pp. 723-726, 2011.
[bib] [doi] [pdf] [abstract]
Abstract: This paper describes the implementation of a VLC media player plugin enabling Dynamic Adaptive Streaming over HTTP (DASH). DASH is an emerging ISO/IEC MPEG and 3GPP standard for HTTP streaming. It aims to standardize formats enabling segmented progressive download by exploiting existing Internet infrastructure as such. Our implementation of these formats as described in this paper is based on the well-known VLC. Hence, it is fully integrated into the VLC structure and has been also submitted to the VLC development team for consideration in future releases of VLC. Therefore, it is licensed under the GNU Lesser General Public License (LGPL). The plugin provides a very flexible structure that could be easily extended with respect to different adaptation logics or profiles of the DASH standard. As a consequence, the plugin enables the integration of a variety of adaptation logics and comparison thereof, making it attractive for the research community.
|