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This paper presents an authoring tool for video-based learning content in the WebELS system to support higher education. The primary function of the authoring tool is to synchronize a video stream with the presentation slide by means of video clip timing. Video and presentation files are needed to be uploaded, and subsequently converted at the server. The system utilizes the video timing position...
The Access Grid (AG) is one of the most widely used technologies for building advanced collaborative environment, and a distributed collaborative Augmented Reality (AR) environment has been established with AG and AR technologies. In such distributed shared environment, one of the most difficult tasks is maintaining a consistent view of the shared AR scene among all participants. This paper presents...
With the emergence of multimode terminals and the deployment of multiple access networks, users are expecting ubiquitous and seamless connectivity across heterogeneous networks when using IP-based applications. For bandwidth intensive IP-based application such as Internet Protocol Television (IPTV), the multimedia contents are usually transmitted via multicast delivery for reason of efficiency. However,...
In this paper, we propose a new Time-Driven Mesh (TDM) overlay network for peer-to-peer video-on-demand systems. In our TDM, all of the peers construct a mesh network connected among them in chronological order of their playback starting times. In order to efficiently search multiple streaming suppliers, we manage the playback starting time and the network location information for all of the peers...
Within the EU FP7 project FascinatE, a capture, production and delivery system capable of allowing end-users to interactively view and navigate around an ultra-high resolution video panorama showing a live event is being developed. Network-based processing is used to repurpose the content to suit delivery towards different device types and user selection of regions of interest. In this paper we report...
Nowadays, several live and on-demand streaming solutions use HTTP for signaling and data delivery. A frequently used technique is to chop a continuous stream into segments, encode these in multiple qualities and make these available for download using plain HTTP methods. This approach has become known as dynamic adaptive segment streaming over HTTP. Its advantage is that the deployed web infrastructure...
The IMS (IP Multimedia Subsystem) network as a new generation suffers of traditional Internet problems such as managing and monitoring QoS which have a direct impact on the the operator's revenue streams. Among solutions proposed, the eTOM (enhanced Telecom Operations Map) published by the TM Forum and 3GPP specifications will be sufficient to describe a system for monitoring and managing QoS. Moreover,...
In this paper, we propose a tracker-based Peer to Peer (P2P) system for live multimedia streaming services. Our system is based on the Proactive network Provider Participation for P2P (P4P) framework which induces the cooperation between P2P systems and network service providers to achieve the best possible P2P application performance and efficient and fair usage of network resources. In the proposed...
Rich media application enables plenty of interactive, information-rich services to enhance end user's viewing experience. In current standards released for such service, only one rendering space is defined to handle multiple types of content belonging to the same service. However, a new trend is to assign more than one terminal device to render rich media application in a cooperative way inside a...
Recent interests in large displays has led to the rapid development of multi-projector tiled display wall systems, which comprises of an array of individual projectors, and usually driven by a cluster of PCs. Here we design a video players system for playing video streams on tiled display wall systems. The video players system includes two components, server and a set of client players. The server...
With recent advances in video encoding and network technology, media streaming services are getting popular. Media streaming system based on the traditional server/client or CDN architecture has a scalability problem, and peer-to-peer media streaming system using resources of peers in the system can provide better scalability. Previous media streaming services are suited to play stored contents such...
The traditional way to composite texts and images over a video clip for presentation encounters such problems as time consuming, instructor skill scarcity, video retrieval difficulty, and video quality loss, especially, in internet high-compressed video materials. To solve these problems we develop a real-time remix platform for video-based presentation which can edit and synchronize online/offline...
User interactivity and customisation are key features that must be promoted to help distinguish IPTV from satellite/aerial/cable TV alternatives. Furthermore, IPTV providers also have to compete with Internet TV by providing extra features to justify the cost. In this paper, we present a number of scenarios whereby IPTV providers can achieve this through the use of synchronised time. Integrating and...
The prototype of time-shifted system on multi-view video is proposed for the first time in this paper. Synchronous locating of multi-view video streams is one of the key issues in supporting time-shifted function. In time-shifted system, video streams are forever lasting, the relative time, as the traditional locating index, now is meaningless to clients, as they would never know when the real moment...
One of the most important enablers when assembling a modern ubiquitous computing system is distribution of multimedia content throughout a home and control of its playback. Additionally, ambient intelligence requirements include playback timeline programming, interaction with sensors and event-based playback triggering. Normally there is a central server dedicated to content storage and streaming...
Quality of Service (QoS) is still one of the major challenges for emerging services based on the Real-Time Transport Protocol (RTP) to deliver multimedia content. In the context of the Internet Protocol Television (IPTV) services, the synchronization of multimedia components plays an important role. In order to synchronize audio and video components of multimedia content, RTP timestamps have to be...
Rich Media (RM) is a new media concept, which is different from the transitional media such as video, audio etc. Embedded rich media services provide a fresh and interactive user experience. A rich media service contains several scenes, which specifies the layout of the elements. Depending on the concrete service, the representation can include various kinds of element streams. The organization, transporting...
IP networks allow constructing versatile device configurations for multimedia streaming. However, the stochastic nature of the packet-switched data transmission may complicate IP-based implementations of some conventional applications such as analog wired transmission of synchronized multi-channel audio. This paper introduces a multimedia streaming system based on the synchronization of multiple playback...
Nowadays, society makes use of new technologies as they appear. Due to this boom, the use of resources via Web is increasing notably. In of training and education cases, companies such as universities are offering tele-learning platforms to complement and facilitate the learning process. Some of these called e-learning platforms can have explanatory videos as a resource for training. For the codification...
In this paper, a multimedia-support e-learning platform called WebELS (Web-based e-learning system) for non-broadband users is introduced. The system includes three main modules: editor, player and manager. Both asynchronous and synchronous e-learning are supported on this platform. Moreover, some technologies are implemented to make the multimedia contents possible for users without wideband network...
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