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Real-time video communications has been incorporated into many instant communication tools such as ichat, Skype, QQ, etc. Real-time video communications has low delivery delay requirement, which imposes great challenge to the provisioning of such services. To address this problem, in this paper, we propose a selective redundant transmission mechanism to support real-time streaming on multi-interface...
Recent years have witnessed a dramatic increase of user-generated video services. In such user-generated video services, crowdsourced live streaming (e.g., Periscope, Twitch) has significantly challenged today's content delivery infrastructure: today's edge networks (e.g., 4G, Wi-Fi) have limited uplink capacity support, making high-bitrate live streaming over such links fundamentally impossible....
Due to the explosive growth in multimedia traffic demand, scalability and delivery efficiency of video-on-demand (VoD) services have become important issues. In this paper, we develop a joint cache allocation and multicast delivery scheme to minimize the average bandwidth consumption of VoD services with client caching under the zero-delay constraint. Specifically, we first propose a client caching...
This paper presents a new scalable coding (SC) algorithm considering the properties of human visual system (HVS), especially the importance of structures and saliencies for visual perception. The proposed method first finds the salient regions in an image and then applies structure preserving filter to the regions excluding the saliencies. This image is encoded with a pre-specified quantization parameter...
In this paper, we will explore and develop an embedded real time system and associated algorithms that enable an aggregation of limited resource, low-quality, projectionenabled mobile devices to collaboratively produce a higher quality video stream for a superior viewing experience. Such a resource aggregation across multiple projector enabled devices can lead to a per unit resource savings while...
In this paper, we present a novel idea of multipath multicast, which is imperative to bandwidth intensive applications, in the context of multimedia streaming. In addition to congestion control, multipath TCP (MPTCP) has been proposed to establish multiple paths in a network to improve network reliability. Application-layer multicast (ALM) has been proposed to leverage end systems instead of dedicated...
Mobile video traffic is exploding and it is particularly challenging to stream video when high density of users are "on the move", e.g., in public transport systems. It becomes increasingly problematic as video traffic is predicted to account for more than 80% of Internet traffic by 2019. This will be exacerbated by factors such as cellular network coverage issues and unstable network throughput...
Dynamic adaptive streaming over HTTP (DASH) is gaining popularity for video streaming over the Internet. DASH uses a rate adaptation algorithm to adapt the bitrate played continuously based on the network conditions. Most of the algorithms use buffer occupancy, throughput, or a combination thereof to adapt the bitrate. In the literature, the Quality of Experience (QoE) of users is measured objectively...
As more and more consumers access streaming video content over the internet, enterprises across the entire video distribution value chain experience tremendous pressure to deliver better performance and high quality of experience (QoE) to the end users. Enhanced video performance is highly desirable, starting from the Video Origin Servers through the core network and Content Delivery Networks (CDN)...
Nowadays, Information and Communication Technology (ICT) is widely used in various fields. For an example, education sector also widely utilizes ICT in distance learning process through the use of multimedia conferencing technology. In order to support the multimedia-based services, it is needed sufficient network resources such as good infrastructure and bandwidth availability. In Indonesia, most...
In Peer-to-Peer (P2P) video streaming systems, a stream of chunks is delivered from the source to all participant peers by utilizing upload bandwidth of the participants. The given stream is generally divided into several sub-streams and those sub-streams are delivered through different spanning trees. In this paper, we consider the delivery of a sub-streams to n subscribers through a spanning trees...
HTTP Adaptive Streaming (HAS) has become increasingly more popular. However, the research about HTTP adaptive streaming for multi-server environments is limited. Compared with traditional single-server environments, HAS for multi-server environments is able to offer expanded bandwidth, link diversity, and reliability. However, it is a challenging issue to support the seamless playback in multi-server...
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...
With the proliferation of hand-held devices in recent years, wireless video streaming has become an extremely popular application. Internet video streaming to mobile devices, however, faces several challenges, such as unstable connections, long latency, and high jitter. Bitrate adaptive streaming and video transcoding are widely used to overcome such problems. However, there are still several shortcomings...
This paper shows the management method of network bandwidth for cloud service or server management. In the cloud service and server management, video transmission is the main problem. When multiple video are transmitted to a network port, if the amount of video data exceeds network bandwidth, user experience becomes worse. To prevent this, compression rates and generation of intra-frame from compression...
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...
MPEG has released a standard of the DASH(Dynamic Adaptive Streaming over HTTP) specification to support QoS(Quality of Service) for multimedia streaming service. Several quality adaptation schemes have been proposed for improving the quality of DASH. However, previous adaptation schemes do not guarantee smooth and seamless playback because they do not considers the VBR characteristics of the contents...
High-speed onboard networks for the space industry with a lot of tasks that could be solved only by transmitting large data streams in a short time, with minimum overheads and accepted latencies. Particular tasks for data transmission require various types of traffic and onboard network topologies. Video data in many applications generate high throughput real-time data streams, from most demanding...
In many networks there is a necessity to transmit data packets flows, the intensity of which exceeds the throughput of one channel SpaceWire, GigaSpaceWire, SpaceFibre. This flow can be a packet flow from a single source to a single destination, for example, from a camera to a monitor. Also, a packet flow can include packets from different sources to different destinations that goes via two neighboring...
Video broadcasts on the Internet have become a commonplace and increasingly find their audience, supported by popular video services and social networks. But there are tasks, that require content delivery network (CDN), which lead to extra expences, and moreover, does not give sufficient flexibility and limits personalization of the broadcasts. This paper presents the principles of creating a flexible...
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