Heterogeneous spatial quality in 360-degree videos is characterized by regions of high and low appearing the same video chunk. Encoding quality-varying omnidirectional enables bandwidth waste optimization without compromising inside client's viewport. has been implemented using either concept tiling or Facebook's offset projection. In this paper, we study preparation heterogeneous with three ma...

The proxy mechanism widely used in WWW systems offers low-delay data delivery bymeans of “proxy server”. By applying proxy mechanisms to video streaming system, we expect that high-quality and low-delay video distribution can be accomplished without introducing extra load on the system. In addition, it is effective to adapt the quality of cached video data appropriately in the proxy if user req...

The transmission of video data is a major part of traffic on today’s Internet. Since the Internet is a highly dynamic environment, quality adaptation is essential in matching user device resources with the streamed video quality. This can be achieved by applying mechanisms that follow the Scalable Video Coding (SVC) standard, which enables scalability of the video quality in multiple dimensions...

Significant progress has been made recently towards the next generation video coding standard by the Joint Collaborative Team on Video Coding (JCT-VC) of ISO/IEC Moving Picture Experts Group (MPEG) and ITU-T Video Coding Experts Group (VCEG). The test model, known as High Efficiency Video Coding (HEVC), aims to achieve 50% coding gain over the current MPEG4/H.264 AVC standard. Recently reported...