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In HTTP Adaptive Streaming, video content is temporally divided into multiple segments, each encoded at several quality levels. The client can adapt the requested video quality to network changes, generally resulting in a smoother playback. Unfortunately, live streaming solutions still often suffer from playout freezes and a large end-to-end delay. By reducing the segment duration, the client can...
Random linear network coding simplifies routing decisions, improves throughput, and increases tolerance against packet loss. A substantial limitation, however, is delay: decoding requires as many independent linear combinations as data blocks. Hierarchical network coding purportedly solves this delay problem. It introduces layers to decode prioritized data blocks early, which may benefit video streaming...
With Netflix and YouTube accounting for more than 50% of North American, fixed network peak download traffic in 2015, video streaming is a significant source of Internet traffic. Dynamic Adaptive Streaming over HTTP (DASH) is a recent standard for live and on-demand video streaming services, where clients adapt their behaviour on-the-fly to match regularly updated estimates of network capacity. Consumer...
The Stream Control Transmission Protocol (SCTP) supports multiple streams to minimize the performance degradation due to head-of-line blocking. Among several streams transmitted simultaneously, some stream may require smaller transmission time than the others. However, the current SCTP provides no facility for controlling the access frequency of respective streams. This paper proposes a new scheme...
The share of video streaming in the Internet traffic is expected to reach 80% by 2019. To deliver these video services in possibly strained settings and to meet with the users requirement of anywhere and multi-screen experience, HTTP Adaptive Streaming (HAS) is gaining momentum. However, TCP-transport of HAS flows is known to entail a number of issues both on Quality of Experience (QoE) and network...
The paper describes a generic Cloud Roboticsteleoperation system which allows to control in real-time arobot (connected with a 4G network) having its video streamas feedback. The proposed system relies on the Azure CloudPlatform and on recent web technologies. Particularly, wepresent an use case experiment in which an operator in Slovakiacontrols a robot situated in Italy in order to evaluate its...
According to the Convergence of a vehicle and IT, In-Vehicle-Network (IVN) is complicated and the multimedia data is increased. Ethernet guarantees Quality of Service (Qos) of the existing Control Area Network (CAN) communication and has a high bandwidth. As a result, the Ethernet is recently developed a new standard. IEEE 802.1 Audio Video Bridging (AVB) supports to handle priority and queuing for...
This paper proposes a traffic engineering methodology based on the self-similarity parameter of video traffic as a restriction on an Integer Linear Programming problem (ILP) for the definition of link costs for routing optimization in the OSPF (Open Shortest Path First ) routing protocol. The goal is to optimize video routing considering QoS constraints and to identify the maximum delay and link load...
Densely-deployed Content Delivery Network (CDN) solutions are used today for delivering a significant fraction of the Internet traffic through replication mechanisms. However, these networks show technological limitations when dealing with the proliferation of rich media-enabled applications such as video streaming. This paper introduces a new approach to content delivery incorporating Information-Centric...
Nowadays many IPTV services are deployed based on P2P structure for the sake of saving the cost of server equipment and bandwidth requirement. Since peers may join and leave the P2P system arbitrarily, it may cause the service quality unstable. In this paper, we compare IP addresses to find partner peers in proximity, and use specific packet pairs to probe partner peers that have larger bandwidth,...
In this paper, we consider combinations of transmission schemes for each media in MVV-A (Multi-View Video and Audio) IP transmission when the total bitrate of transmitted audiovisual streams is regulated. We employ two types of transmission schemes: single stream transmission and all streams simultaneous transmission. We assess QoE of the four combinations of the transmission schemes by a subjective...
Live streaming of video contents over the Internet generally requires conversion (i.e.,transcoding) of the video contents based on the characteristics of viewers' devices (e.g.,spatial resolution, network bandwidth, and supported codec). Due to the complexity of video transcoding process, live streaming service providers are becoming reliant on cloud services (e.g.,Amazon AWS1). With the scalable...
In Recent times, real time applications are increasing gradually which have specific Quality of Service (QoS) requirements. IEEE 802.11e is aimed to provide such QoS. 802.11e uses traffics differentiation among flows using a parameter set. The flows are admitted using their priority. The voice and video flows are admitted in most of the times due to their higher priority. This causes the increase...
With ever increasing growth in the number of users accessing online videos through mobile phones and tablets, the online video traffic is also growing. In today's network environment, when a mobile user requests for online videos, it should be fetched from Content Delivery Network servers. The video has to pass through several gateways in the core network and base station in Radio Access Network before...
ITU-T H.264/MPEG-4 Scalable Video Coding (H.264/SVC) is one of popular video coding standard after H.264/MPEG-4 Advanced Video Coding (H.264/AVC) which was created by Joint Video Team (JVT) between Video Coding Expert Group (VCEG) ITU-T and Moving Picture Expert Group (MPEG) ISO/IEC. This standard allows video coding using single layer or more ones to provide the scalability of the coded video.
In this brief, the implementation of efficient image encryption and decryption scheme in Residue Number System (RNS) is analyzed. The RNS domain is mainly chosen for its carry free parallel and fast arithmetic operations. But, the converters make RNS inefficient by having large delays. Hence, to use the RNS for our applications we must have the efficient converters. Here, we designed pure combinational...
This paper will discuss about transmission of multimedia content in limited capacity network (up to 5 Mbps), especially to study about the impact of background traffic towards multimedia content delivery quality in a limited capacity network. Observation methods proposed in the study include measurement of limited capacity network, background traffic modeling, and simulating the network to observe...
In this paper, an adaptive hybrid automatic repeat request (HARQ) scheme is proposed for unicast wireless video communication systems. In the proposed scheme, the receiver controls the HARQ feedback messages based on not only error detection, but also video content and playback deadline. The adaptation algorithm utilizes a delay model to estimate the transmission time of a video frame and its delivery...
The efficiency of the compression parameters of video control method is directly related to the number of parameters. Namely, the time required to process each of the frames, and the possibility of considering the peculiarities of the processed frames content. This article describes factors that affect the value of the transmission delay and explores improving aspects for the performance parameters...
The paper discusses the design and implementation of a low-cost tool for analysis and design of applications involving video based networked interaction or teleoperation, such as remotely operated devices and collaborative environments. The tool is intended for providing an accurate measure of the video lag involved in the encoding and streaming video over packet networks, and for assessing the impact...
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