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In recent years, the BitTorrent (BT) has been one of the most efficient mechanisms for Peer-to-Peer (P2P) non-realtime content distribution. Many approaches for streaming videos over BitTorrent have been proposed by modifying the piece selection policy to cope with the real time requirement. Most of them provide the continuity of video playback at the cost of the variety of pieces on P2P streaming...
Usage of mobile devices for multimedia content playback is drowning the battery power rapidly. High quality videos which are streamed from the internet are power consuming and demand high network bandwidth. We measured the power consumption and bitrate of video sequences in respect to different spatial resolutions and used acceptability-based Quality of Experience (QoE) model for determining the impact...
Much work has been done to improve the performance of video streaming over mobile data networks. The widespread adoption of HTTP/TCP for video streaming further complicates the problem as TCP's own dynamics add even more fluctuations to the already unpredictable network bandwidth. Not surprisingly, none of the existing video bit-rate selection algorithms can achieve consistent or predictable streaming...
The streaming of video service, either live or video on-demand streaming is in receipt of remarkable attraction from the users and industry. The ISPs nowadays provide the smart TV access over the Internet connectivity, where the users can access the real-time contents adjoining to the trendy contents like web browsing, email and downloading. The multimedia applications, specifically video streaming...
For content delivery in P2P video streaming systems there are two main approaches: push-based and pull-based. In pull-based P2P video streaming, neighbor peers request missed chunks of video from each other, but sometimes peers can't receive this chunks because of the exit or delay of the corresponding neighbor. Although previous works such as forward error correction (FEC) and automatic repeat request...
Aggregation Loss Bandwidth (ALB) within the last mile internet accounts for significant unusable bandwidth under current Internet Service Provider (ISP) centric routing strategies. Using a Hierarchical Network Topographical Routing (HNTR) scheme we show that this ALB can be exposed to the network and applications. A video streaming system is used as a case study to show the potential efficiency and...
The mobile device usages in last decade grown enormously due to the variety of applications with video based contents. The video delivery through the internet is highly focused because of heavy demands from the mobile users. We take various techniques involved in video streaming in wireless networks. The different constraints and different methods have been studied with their merits and demerits and...
Because of the explosive development of different wireless technologies, mobile users can now access multiple wireless networks simultaneously. In this environment, a multiple path scheduling algorithm can improve the performance of the wireless networks and ensure high quality of video streaming for mobile users. This may not be the case, however, for TCP flows. One key reason is the occurrence of...
Voice over IP (VoIP) is increasingly replacing fixed line telephone systems globally due to lower cost, call quality improvement. More and more application improvement and Video communication is emerging as an alternative to traditional public communication. End-to-end QoS for large Enterprise consists of three general areas: cutomer premises QoS ("LAN QoS"), Service Provider (SP) core network...
VoIP and video streaming is one of the cheap and fast communication technology. Both of this technology use the internet network on its transmission. In order to get good performance, it is need an high speed and wide coverage internet network. One of the solution is WiMAX network. This research analyze the performance of VoIP and video streaming over WiMAX network (IEEE 802.16d for fixed-nomadic...
This paper discusses a method of supporting blackboard based lectures. In this method, students watch the video of the blackboard based lecture on a tablet computer. Some parts of the blackboards are recorded by two or more cameras, and a player is designed to enable the user to view and listen to any portion of the lecture. The videos in our method must be high resolution and high quality for students...
The emerging broadband cellular technology, i.e. the Long Term Evolution (LTE), aims to support different services with high data rates and strict Quality of Service (QoS) requirements. It can thus be considered a very promising architecture for the three-dimensional (3D) video transmission. Differently from the conventional 2D video, the depth perception is the most important aspect characterizing...
We construct an experiment testbed using commercial routers and demonstrate QoS-aware multi-path SVC video streaming with it. The testbed consists of six integrated services routers (Cisco 2900 Series) that are configured using a mesh topology. To realize QoS-aware multi-path routing efficiently, we develop a centralized automatic NC&M system that monitors link status proactively, calculates the...
Peer-to-peer systems become a promising alternative for traditional server-client system to providing video streaming; the topology is the one of most important part of these systems. The proposed topology presented in this study is an adaptable topology affected by two factors: video bitrate and upload bandwidth for each single peer in the network. The connection between peers will be changed based...
In this paper we present some contemporary examples of research-oriented as well as commercial content delivery networks (CDN)s. We discuss how both types of CDNs complement each other in tackling the posed technical and commercial challenges. We also show which performance metrics such as quality of experience (QoE) and time to first byte (TTFB) best capture the dynamics of traffic and services in...
This paper provides an overview on the challenges of mobile video streaming focusing on overload situations, variable bandwidth and power consumption issues. Dynamic Adaptive Streaming over HTTP (DASH) is introduced as an enabler to address a significant portion of these challenges. The applicability of the formats to 3G and 4G unicast distribution is provided. Also the applicability of DASH formats...
Multiple Description with Forward Error Correction (MD-FEC) coding provides the flexibility, easy adaptivity and distortion-rate optimality that are desirable for delivering streaming video in a network environment with time-varying bandwidth fluctuations and random packet losses. In this paper, we consider the issue of how diverse receivers of a video stream should be grouped — where each group receives...
IPTV is an emerging Internet application that pumps heavy video traffic to both access networks and ISP backbones. Due to the lack of commercial deployment of IP multicast, huge volume of streaming traffic may overload the servers. Hence, P2P IPTV distribution becomes popular and advances quickly. P2P IPTV uses two approaches: tree-push and mesh-pull. The latter has experienced a number of successful...
Video streaming with Peer to Peer (P2P) architecture appears to be an interesting solution for efficient streaming in the heterogeneous scenario of Internet applications. One of the key aspects in a peer-to-peer video broadcast system is to organize the peers into a high quality overlay for disseminating the video stream in order to optimize the bandwidth capacity of the P2P system. This work proposes...
This paper considers the characteristic of highspeed train about precise timing information, such as arrival time, depending duration on station, traveling time and current location of train, to design a video proxy agent for VoD service in train. Based on the information of current active video flows, a burst prefetching scheme is developed when the high-speed train depends on station. The video...
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