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Meeting IPTV's quality of service constraints (such as low latency and loss) requires designing the right combination of underlying IP-transport, restoration, and video and packet recovery methods. Carriers use link-based fast reroute (FRR) as the primary transport restoration method to achieve this goal. Although we can carefully tune the link weights in the IP routing protocol to avoid traffic overlap...
In the video and audio chatting system, the transmission control of media stream is one of the most important issues. This paper introduces system solutions and design of key technologies, including the DirectShow framework of real-time audio and video exchanging, combined with MPEG-4 audio and video coding technology. We streamline the RTP protocol to achieve a good audio and video data analysis...
This paper describes the main challenges of implementing a multimedia on demand system (TetraMoD) for emergency scenarios. The objective of this system is to offer a complete solution for providing multimedia services (video on demand and reliability file transfer) to a rescue team in an emergency situation. This multimedia system will improve the traditional emergency communications. We propose to...
Ubiquitous and efficient multicast data delivery service is essential to the success of large-scale group communication applications. In this framework, congestion control through ubiquitous networks is a hot topic for multicast real time protocols. In this paper, authors present specification and implementation of simulate TCP's AIMD with rate-based (STAIR), a multicast congestion control mechanism...
The goal of a video conferencing system is to deliver multimedia data to the conference participants efficiently and securely. To meet the requirement of a video conferencing system over the internet, many issues have to be addressed, such as security, scalability and heterogeneity. In this paper, we propose a secure and scalable video conferencing system named VCNF (Video Conference Network Foundation),...
Layered transmission is a promising solution to multimedia transmission over Wireless Networks. However, since the number of layers is practically limited, noticeable mismatches would occur between the coarse-grained layer subscription levels and the heterogeneous and dynamic rate requirements from the receivers. In this paper, we propose Adaptive Layered Multicast (ALM) that exploits the increasing...
This paper presents the BRisa UPnP A/V framework. BRisa is a framework that allows users to discover multimedia devices, share, search and render multimedia content over the local networks or remotely through the Internet. BRisa has been developed using UPnP specifications, which makes use of standard Internet protocols and services, such as HTTP, UDP and SOAP. BRisa is composed of three main applications:...
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