Efficient segment-based video transcoding proxy for mobile multimedia services

Mobile multimedia has been promoted as a promising service and application in mobile e-commerce (m-commerce) by many mobile operators and mobile service providers, when high-speed mobile networks are expected to take off in the near future. However, at present, mobile multimedia is still in its infancy, accessed by relatively low-end mobile devices with limited bandwidth and resources. A typical example is Orange in Hong Kong which launched a low-grade multimedia service in 2000 to test the market with current mobile technologies. Due to the physical constraints of a 2.5G mobile network, audio broadcast is the best service that the network can offer up to date. However, in the near future, when advanced mobile networks and technologies become available, higher demands will be placed on the quality of mobile multimedia services. Such services support both audio and video data, for example, video conferencing, music video, video-on-demand and so on. Rights management deserves more serious concern because intellectual property of distributed multimedia content is as valuable as a company’s physical assets (Doherty, 2002). This will become even more important when mobile multimedia services become marketable and an essential part of the business. The purpose of a digital rights management (DRM) system is to allow owners of digital assets (movies, songs) to distribute their products/services/contents electronically in a controlled way (Peinado, 2002). DRM technology makes various online payment schemes possible, such as pay-per-view, pay-per-download, pay-per-game and so on. Hence, mobile service providers are able to control end users’ use of, and accessibility to, their products, and stand to gain huge profits from this capability with the DRM technology (Foroughi, Albin, & Gillard, 2002). A successful DRM system should address both business and technical issues (Grab, 2002), but this chapter only addresses and presents issues in the technical side due to the nature of this book. We present some critical issues of mobile DRM for mobile multimedia. A proposal of mobile DRM framework is presented to meet the urgent DRM needs with the existing 2.5G mobile technology. This chapter is concluded by presenting future directions of mobile DRM for mobile multimedia.

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Mobile Video Transcoding Approaches and Challenges

Encyclopedia of Mobile Computing and Commerce ◽

10.4018/978-1-59904-002-8.ch104 ◽

2007 ◽

pp. 627-631

Author(s):

A. Ahmad

Keyword(s):

Video Transcoding ◽

Mobile Multimedia ◽

Mobile Video

This article examines the challenges and limitations that face video transcoding schemes in a mobile multimedia transporting network. Then we explore different approaches for video transcoding schemes in a mobile multimedia transporting network.

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Mobility Prediction for Multimedia Services

Handbook of Research on Mobile Multimedia ◽

10.4018/978-1-59140-866-6.ch033 ◽

2011 ◽

pp. 491-506 ◽

Cited By ~ 3

Author(s):

Damien Charlet ◽

Frédéric Lassabe ◽

Philippe Canalda ◽

Pascal Chatonnay ◽

François Spies

Keyword(s):

Mobility Prediction ◽

Mobile Multimedia ◽

Positioning System ◽

Multimedia Services ◽

Mobile Access ◽

Rich Media ◽

New Challenges ◽

New Applications ◽

Indoor Positioning System ◽

Network Scalability

Advances in technology have enabled a proliferation of mobile devices and a broad spectrum of novel and out breaking solutions for new applications and services. In the present, more and more people and companies are demanding mobile access to multimedia services such as real-time rich media. Today, it is necessary to be able to predict adaptation behaviour which concerns and addresses not only the mobile usage or the infrastructure availability, but the service quality especially the continuity of service. Our chapter provides insight to new challenges of mobile multimedia services and applications: Wifi indoor positioning system adapted to heterogeneous building, static and learning mobility prediction, predictive handover policy for multimedia cache management, mobile multimedia guide (such as museum), and network scalability.

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