[[alternative]]Real-time Filtering and Access Control for MPEG-4-ES in a Video Streaming System

[[abstract]] 本文所研製之視訊串流系統，是為了解決整合於遠端遙控系統上的即時視訊串流系統，能有全系統的一致性而提出。運用於遠端遙控系統的視訊系統需具備即時性的能力，以供遠端人員或系統能即時瞭解被遙控設備位處的環境狀況，而MPEG-4視訊壓縮標準具較高品質的壓縮性能，配合RTP通訊協定的運用，即可達成此任務；然大多數的Video Server、IPCam等設備，所輸出的視訊串流會參雜其他多餘的資料，造成IP網路資源的浪費，並且對於瀏覽視訊串流的權限控管未開放SDK或API給系統整合開發者運用，造成系統不一致的觀感，是故本研究之視訊串流系統試圖解決此兩大問題；經由系統運作展示與測試分析顯示，本研究之系統能將視訊串流秒差縮短在小於0.25秒內，並且在live555 Library的協助之下，達成即時視訊瀏覽權限控管的能力。[[abstract]] The goal of this article is mainly to build a real-time video streaming system which can be integrated into remote control system and can have a whole-system consistency. The video streaming system used in remote control system needs to have real-time ability, providing status to the personnel or the system about the environment where the device is located in. With high-quality compression performance of MPEG-4 compression technology and the application of RTP communication protocol, this task can be achieved. However, most devices like Video Server, IPCam, etc. make outputs mixed with other redundant data. In addition, the access control SDK or API for control browsing permissions are not available for systems developers. This makes the impression of inconsistency on the system. Therefore, this research has been trying to resolve these two major issues here. Analyses of efficiency show that the results of this research proved to limit the video's time gap within 0.25 seconds. Additionally, we can meet our second challenge with the help of live555, i.e. to restrict the receiver's access permissions