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The Information Technology is improving these days, which pushes users' experience for video services to improve rapidly. In this trend, to improve the quality of experience (QoE) of online video service, a Measuring and Recommending System for Online Video Service (MCS) have been developed. In some traditional method, researchers classify resources with their video with the video attribute to reduce...
Video services are flourishing, and the same content might be hosted by different websites. A user typically does not care about which provider provides the service to him/her but rather the quality of the service. However, the network condition is not stable and it is hard to obtain the service performance in real time during the online service. Therefore, it is very important to understand the potential...
To effectively utilize storage space of edge streaming media servers, cache policies are being studied. Unlike traditional work that focused on hit ratio and overall system bandwidth cost, this paper recognize different significance of users and propose the concept of caching utility as a new metric to evaluate caching strategies. A user based caching algorithm, USCS, involving differentiated service...
This paper designs an infrastructure to meet the resource requirements, and more importantly, the QoS (quality of service) requirements for networked multimedia services. Learning from the successful experiences of distributed systems, the infrastructure deploys clusters of devices at the edge to improve the probability for end users to get satisfying QoS, and a two-layer management architecture is...
In order to evaluate the influence of neighbors' quality to P2P streaming system's performance during scheduling, this paper establishes a markov chain based differential function model to analyze the relationship between peer's average startup delay and probability neighbors have wanted data as well as neighbors' available upload bandwidth. This paper also proposes a scheduling feedback algorithm,...
Reducing server's bandwidth pressure is one of the key problems in the designing of peer-to-peer video-on-demand system. In this paper, we analysis and model this problem via using the “pseudo sequence scheduling”, which is widely used by many peer-to-peer video-on-demand systems. We reveal the relations between the server bandwidth consumption, the cache size and the join speed of peers. This result...
This paper proposes a new real-time information hiding algorithm on latest H.264/AVC video coding standard. The information is embedded into the trailing ones of 4??4 blocks during the context-based adaptive variable length coding (CAVLC) process. This algorithm is efficient with low computational complexity. The simulation results show that the degradation of video quality is negligible, and the...
The replication and deployment of media file is one of the key issues in video-on-demand system, the replication algorithm and deployment strategy will directly affect the performance of storage balance and load balance in the system. In order to enhance the capacity of streaming media servers and handle the problem that migrating files will affect acceptance rate of user requests, in this paper we...
This paper analyzes the characteristics of time-shifting service for mobile multimedia broadcast and proposes a strategy of resource scheduling for time-shifting proxy server based on predictable user behaviors. Further more, by modeling user behaviors and defining user-habit property, this paper also proposes two different prediction algorithms, the algorithm based on maximum transition probability...
In video-on-demand (VoD) systems, a number of sophisticated architectures have been proposed to provide instantaneous services through the use of unicast and multicast technologies. Most of the architectures adopt a delivery scheme independent of the popularity of the requested video and the current system load, which fails to achieve a better bandwidth utilization ratio. This paper presents a unified...
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