A study on a video content management system using multiple qualities in a video cache distribution system

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06067
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Hiroshima University
• Principal Investigator: Kodama Mei 広島大学, 情報メディア教育研究センター, 准教授 (50277828)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 動画像配信 / キャッシュ / 動画像管理方式 / 階層符号化 / 複数品質 / 優先度推定

Outline of Final Research Achievements

We propose a cache video content management method using multiple qualities in a cache video distribution system in order to shorten video acquiring time and reduce service cost in video content utilization services over the network. Considering various utilization devices, we focus on multiple qualities. In order to realize improvement of moving picture transmission efficiency and reduction of video acquiring time by cache effect, we used quality dependent rule using hierarchical data structure, priority / priority group derived from usage frequency / usage time of video. Then, we propose a new content management method. We designed a practical model such as popularity and access number, and we indicated that the proposed method based on the priority estimation method was effective more than the conventional methods.

Free Research Field

情報通信工学