Reliable Video Research Articles

Design and Configuration Rationales for Digital Video Storageand Delivery Systems

Recent advances in computing technology have brought multimedia information processing to prominence. The ability to digitize, store, retrieve, process, and transport analog information in digital form has changed the dimensions of information handling. Several architectural and network configurations have been proposed for efficient and reliable digital video delivery systems. However, these proposals succeed only in addressing subsets of the whole problem. In this paper, we discuss the characteristics of video services. These include Cable Television, Pay-Per-View, and Video Repository Centers. We also discuss requirements for “Video On Demand” services. With respect to these video services, we analyze two important video properties: image quality and response time. We discuss and present configurations of a Digital Video Delivery System (DVDS) from three general system components - servers, clients, and connectivities. Pertinent issues in developing each component are also analyzed. We also present an architecture of a DVDS that can support the various functionalities that exist in the various video services. Lastly, we discuss data allocation strategies which impact performance of interactive video on demand (IVOD). We present preliminary results from a study using a limited form of mirroring to support high performance IVOD.

Adaptive resynchronisation marker positioning method for error resilient video transmission

For reliable video transmission over error-prone mobile channels, an adaptive resynchronisation marker positioning (RMP) method is proposed for rapidly resynchronising the VLC decoding synchronisation which is often lost due to channel errors. The simulation results show that the proposed adaptive RMP method gives a remarkable improvement over the fixed RMP method.

Design of video service engine with SCSI for an ADSL-based near video on demand system

A design for a video service engine (VSE) with a small computer system interface (SCSI) is proposed. It is implemented to an ADSL-based near video on demand (NVOD) system as the video stream pump to provide interactive services. The description of the VSE follows the sequence of system overview, hardware architecture and operation flow control in order to give a comprehensive understanding of it. In addition, a video service trial which uses the VSE to pump 504 channels of program at the DS1 rate is also introduced. From the quality of service (QoS) test, the VSE successfully provides interactive service to the customer with a distance of 15000 feet from the central office. Hence, a reliable video delivery system with good quality is proved.