2 research outputs found
A Video-Aware FEC-Based Unequal Loss Protection System for Video Streaming over RTP
A video-aware unequal loss protection (ULP) system for protecting RTP video
streaming in bursty packet loss networks is proposed. Considering the relevance
of the frame, the state of the channel, and the bitrate constraints of the
protection bitstream, our algorithm selects in real time the most suitable
frames to be protected through forward error protection (FEC) techniques. It
benefits from a wise RTP encapsulation that allows working at a frame level
without requiring any further process than that of parsing RTP headers. This
makes our system straightforward and fast, perfectly suitable to be included in
commercial video streaming servers. Simulation results show how our technique
outperforms other proposed ULP schemes
Providing 3D video services: the challenge from 2D to 3DTV quality of experience
Recently, three-dimensional (3D) video has decisively burst onto the entertainment industry scene, and has arrived in households even before the standardization process has been completed. 3D television (3DTV) adoption and deployment can be seen as a major leap in television history, similar to previous transitions from black and white (B&W) to color, from analog to digital television (TV), and from standard definition to high definition. In this paper, we analyze current 3D video technology trends in order to define a taxonomy of the availability and possible introduction of 3D-based services. We also propose an audiovisual network services architecture which provides a smooth transition from two-dimensional (2D) to 3DTV in an Internet Protocol (IP)-based scenario. Based on subjective assessment tests, we also analyze those factors which will influence the quality of experience in those 3D video services, focusing on effects of both coding and transmission errors. In addition, examples of the application of the architecture and results of assessment tests are provided