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Nowadays, Internet video is the dominant internettraffic. DASH is an adaptive video streaming technique introducedto enable high quality video delivery over HTTP. In homenetworks, multiple video streams will compete for bandwidth, thus leading to poor performance and impacting the receivedquality of experience. In this paper we introduce a new techniqueto address this issue at the home network gateway...
Wireless networks have dynamic transmission properties as the wireless channel conditions randomly change over time due to several environmental factors. When transmitting real-time applications such as video, the dynamic properties of wireless networks can have detrimental effects on the quality of the video delivered to a user. Many Quality of Service (QoS) guarantee techniques to improve video...
The smooth video streaming over HTTP through 3G/4G wireless network is challenging as available bit rate in the internet changes due to sharing of network resources and time varying nature of wireless channels. The present popular technique Dynamic Adaptive Streaming over HTTP (DASH)provides solution up to some extent to stored-video, but the effective adaptive streaming of a live video remains a...
Named Data Networking (NDN), aka Content Centric Networking (CCN), excels in content distribution especially multimedia distribution, which can consume significant network bandwidth. With the market penetration of mobile devices and advancement of wireless technologies, media streaming over Wi-Fi becomes increasingly popular but it does not scale well in today's IP based networking. A natural question...
To understand better what happens when video streaming takes place, this paper introduces a framework to simulate a real-time video streaming over wireless channels. The system is divided into many modules and is simulated with different tools. DUMMYNET is used for the network simulator while FFMPEG is for coder/encoder and sender/receiver module. The video quality is measured by spatial (SSIM and...
This paper studies the resource allocation problem for efficiently utilizing network resources for distributing video over a peer to peer mobile ad hoc network. We define an NP complete linear optimization problem to handle the upload bandwidth available across each node. Scalable video coding is used to maximize the quality of experience among users and to distribute the load and reduce the consumed...
In this paper, we propose a method to stream a high quality video with low latency and high bandwidth efficiency. Our method, which is similar to multicast, repeats copying packets in the network using a distinguished address for multiple receivers, so that it can minimize the latency and the bandwidth, and hence is suited for stream a video. This method does not require a relay server. We discuss...
Band Codes (BC) have been recently proposed as a solution for controlled-complexity random Network Coding (NC) in mobile applications, where energy consumption is a major concern. In this paper, we investigate the potential of BC in a peer-to-peer video streaming scenario where malicious and honest nodes coexists. Malicious nodes launch the so called pollution attack by randomly modifying the content...
High quality video streaming for mobile users is difficult to achieve in some areas of the world due to poor broadband capacity and sparse network coverage. We propose a bandwidth-sharing scheme to allow users with limited uplink bandwidth to borrow idle bandwidth from nearby access points and provide these users the opportunity to experience higher quality video than what their own bandwidth could...
The aim of our work is to develop an application that runs on a mobile platform, and performs live streaming from the camera of a phone to other phones and PCs. The application should be able to adapt the quality of the video according to external factors like the strength of the network connection.
Media production generally requires many geographically distributed actors (e.g., production houses, broadcasters, advertisers) to exchange huge amounts of raw video and audio data. Traditional distribution techniques, such as dedicated point-to-point optical links, are highly inefficient in terms of installation time and cost. To improve efficiency, shared media production networks that connect all...
Crowdsourcing-based video service systems, e.g., Thunder Crystal, are novel content distribution platforms composed by a large number of agent devices, acting like miniservers. Most agents are normal Internet users who would like to earn rewarded cash by uploading content through their devices. Compared with CDN, the bandwidth cost is much cheaper; while compared with Peer-to-Peer(P2P), the bandwidth...
As video streaming becomes one of the most fast growing and dominant applications in fixed and mobile networks, how to provide high quality and user satisfaction is a widely studied research topic. In this paper, we develop an analytical framework to derive the downloading rate and bandwidth requirement, so that certain objective quality of experience (QoE) constraints are met. Particularly, application-specific...
The issue of content placement for video streaming over cellular networks is addressed in this study. Our method was verified using real video streaming data taken from traces of live content distribution networks. Simulation results show that replicating a relatively small number of video files can significantly reduce the incoming bandwidth from the Internet backbone, as well as the (time) latency...
In Multimedia network applications, adaptive mobile streaming empowers cloud-based real time transcoding. The researchers in media cloud propose a well-organized technique to split the video content into different frames. The technique is to carry out disseminated encoding to resolve the multimedia data conversion problem. Also, it introduces an energetic outgoing and an extrapolative bandwidth for...
In this paper, we propose an adaptive routing approach for video streaming with QoS (Quality of Service) support over Software Defined Networks (SDN), called ARVS. In our approach, base layer packets and enhancement layer packets of video bit streams are treated separately as two levels of QoS flows (level-1 and level-2 QoS flows). During video streaming, if the shortest path does not satisfy the...
Providing robust content delivery along with efficient wireless resource usage is important for next generation wireless networks. To achieve this, we propose a proactive content caching scheme utilizing transportation systems, especially trains. In our system, we place content servers with CCN capability to every train and station. Segments of video contents are pre-cached by the station servers...
This paper introduces GENI Cinema (GC), a system that provides a scalable live video streaming service based on dynamic traffic steering with software defined networking (SDN) and demand driven instantiation of video relay servers in NSF GENI's distributed cloud environments. While the service can be used to relay a multitude of video content, its initial objective is to support live video streaming...
Due to the time-varying feature of the wireless channel, the video playout process could be interrupted, which is caused by the underflow of the playout buffer in UE. In this paper, a Playout Buffer Aware scheduling scheme(PBA) is proposed to improve the playout continuity of the video streaming services over LTE networks. First of all, an UE classification method is proposed to accurately distinguish...
For content delivery in Peer-to-Peer (P2P) video streaming systems there are two main approaches: push-based and pull-based. In P2P Video-on-Demand (VoD) systems, neighbor peers might watch the same video with very large differences in viewing point; thus using push-based approach is not sufficient for these systems. Also, with using pull-based approach, peers need large buffers to achieve better...
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