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The design of interactive Near Video-on-Demand (NVOD) systems is highly complicated when scalable stream merging is used. We propose an intelligent client-side cache management policy for these systems, allowing and exploiting cache discontinuity. This policy maximizes the percentage of interactive requests serviced from the client's own cache without requiring any resources from the server. The policy...
Video data has been growing in importance over the last decade, and it is expected to exceed all other forms of networked data in for some time. This is also the case for the specific scenario of mobile data, where more than 60% of traffic globally will be video data. As the future Internet will encompass traffic from the Internet of Things, including low power personal devices in low quality media...
In the objective of streaming the video to the end-user with the best possible quality, in this paper we propose an approach that couples the SNR scalable video coding (SVC) extension of H264/AVC, with the path diversity provided by video distribution network (VDN). Our method adapts to the heterogeneity of end-users using the scalable video coding. Moreover, it adapts to network bandwidth fluctuation...
Recent advances in scalable video coding have paved the way for the development of flexible and adaptive media streaming applications. In order to support rate adaptation, 3GPP Packet-Switched Streaming Service (PSS) has specified a feedback mechanism that includes transmitting information about the status of the client buffer. This paper presents a novel Multiple Virtual Client Buffer Feedback (MVCBF)...
For poor quality of playback and low scalability in Video-on-Demand (VoD) system, it proposes combination of Content Distribution Network (CDN) and Peer-to-Peer (P2P) technologies applied in traditional C/S architecture. CDN server provides video initial data for user's fast playback and complementary streaming, P2P networks provides normally required video data downloaded in advance, the directory...
In this paper we introduce some significant improvements to a well known algorithm for multicast in overlay networks, namely ZigZag. The improvements are mainly related to a better handling of peer churn, avoiding service interruption to the subtree rooted at the departed node. Since the target is a video streaming service, additional constraints are related to a minimum serving quality for outgoing...
Data-driven P2P streaming systems can potentially provide good playback rate to a large number of viewers. One important design problem in such P2P systems is to determine the optimal chunk selection policy that provides high continuity playback under the server's upload capacity constraint. We present a general and unified mathematical framework to analyze a large class of chunk selection policies...
Patching is a cost efficient multicast stream scheduling technique to provide true VOD services. However, one patching channel is dedicated for serving one client and can't be shared by others. Therefore, the duration of patching streams is decisive to the performance of patching. When request rate is high, the scalability of patching is poor. In this paper, we present an adaptive segment-based patching...
The ubiquity and simplicity of HTTP makes it a popular choice for Web-based video retrieval. However, HTTP was not designed for retrieving data with just-in-time tolerances; HTTP servers have always taken an as-fast-as-possible approach to data delivery. For media with known bandwidth constraints (e.g., audio/video files), HTTP servers can be enhanced and optimized by taking these constraints into...
Multiview video is well known to involve interactions with audience and offer better view experience than conventional single-view video. The interactive nature of multiview video has made the service very delay-sensitive and thus imposes great challenges for providing multiview streaming service in Internet. Currently, almost none of existing works have addressed the delay issue in multiview streaming...
The POP servers usually have overloaded burden in the current Video Grid. This paper puts forward a technique to import P2P mechanism into Video Grid to alleviate the burden of POP servers. PGVOD is proposed under this technique. It can send video streams buffered in client computers to other clients so as to alleviate the burden of POP servers, shorten the transmission path of video streams in network,...
Large-scale stream media delivery over Internet is one hot and hard problem. Three main solutions have been developed for this purpose. Content delivery network (CDN) can provide high quality streaming service with high cost. Server-based proxies are cost-effective but not scalable due to the limited proxy capacity and its centralized control. Peer-to-peer (P2P) network is scalable but does not guarantee...
Peer-to-peer (P2P) based live video streaming system has emerged as a promising solution for the Internet video streaming applications, partly evident from commercial deployment of several large-scale P2P streaming systems. The key is to leverage the resources available at end users, which offers great potential to scale in the Internet. Flash crowd poses a unique challenge for live streaming systems,...
The basic task of a CDN is content distribution from content provider to end users. In addition, there are a number of services that should be available to the content provider for managing live and on-demand content streaming. The goal is to make the program offer more attractive, which is what users expect, and to implement features such as personalized ad insertion, which may be not exactly what...
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