VIDEO CONTENTS DELIVERY METHODS WITH SCALABLE TRANSCODING FOR MULTI-QUALITY VIDEO

摘要

When video data are transmitted via the network, the other internet services may be influenced by the occupation of these data even if on broadband network. So data transmission methods for video content are required. In this paper, we propose video access model with guaranteed bandwidth considering by data transmission and browsing. Moreover, we propose the video contents delivery methods with scalable transcoding, when users use multi-quality video, and evaluate transcoding time in video access model. It is the point that model parameters, such as, number of users, channels and contents and access users' probability, are indicated and amount of usage time in accessed users is defined as service indicator. We classify the cases in proposed model, such as, stable access and access conflict in order to retrieve video contents. By evaluation experiments, these situations of users' access are made clear. At this time, we indicated the case when proposed methods are more useful than simulcast type for multi-quality video. From the view point of transcoding time, influence of users' access time is clear in this model, comparing proposed methods with simulcast type by simulation experiments.