臺灣博碩士論文加值系統

1999熱線為目前台灣民眾廣為使用的服務專線，主要功能為提供民眾一個政府政策諮詢的管道，同時也能用來通報各種非緊急事務，後來逐漸擴及各種緊急事務通報。第一代1999熱線於2005年啟用，採用單一電話號碼來整合各政府單位的服務，方便記憶且易於推廣。讓民眾只需記憶一個電話號碼，就可以獲得各種諮詢服務與問題解答，且省去電話轉接的困擾，並進一步達成「一個號碼全面服務」的目標。所提供的服務範圍也進一步擴展到陳情、申訴、檢舉、通報、建議等，是一項便利性及整合性俱佳的市政服務措施。近幾年來，隨著網路頻寬的擴大與影音傳輸技術的大幅演進，使得相關應用領域蓬勃發展，而政府單位也注意到這樣的發展趨勢，將許多與民眾切身相關的服務雲端化，使民眾洽公時能更便利與省時。在此情況下，1999熱線也可與此趨勢結合，使用早已普及的智慧型手機傳送實時影音(live video/audio)串流進行視訊報案，用來取代傳統語音報案方式，如此一來可提供更真實的情境描述，避免雙方溝通認知之落差與因緊張可能產生之口誤。
在做法上，使用智慧型手機取得之實時影像和聲音並以DASH技術，轉換為段落式(segmented) MP4格式，再透過3G/4G行動網路傳輸現場畫面到工作站監看螢幕上，讓工作站能在最短時間內了解報案者的需求，並馬上回應與進行後續處理。所整合的其他技術還包括後端雲端儲存平台之建置，並透過手機內建的GPS定位系統，將報案者所在位置標示於google地圖上，搭配回傳的即時視訊畫面，再藉由WebRTC技術使通報者在需要時可以跟服務人員做雙向語音通話，將通報的問題作更進一步的釐清。

1999 Hotline is a service hotline widely used by the people of Taiwan. Its main function is to provide a government policy consultation channel for the public. Later, it gradually extends to inform various emergency and non-emergency events. The first-generation 1999 hotline was launched in 2005, using a single phone number to integrate the services of various government departments, it’s easy to remember and promote. With the hotline, people only need to remember a phone number, then can get a variety of services, and avoid the call transfer problems, making the "one number all-services" goal come true. In recent years, the expansion of network bandwidth and the evolution of audio/video transmission technology make the relevant industries and application areas flourish, government departments have also notice the trend of cloud services which can save people’s time and make them more convenient. In this case, the 1999 hotline can also be combined with this trend and use the advantage of the widespread of smart phones to transmit live video/audio stream for reporting events replacing traditional voice reporting, this approach can not only provides a more realistic event status description but avoid the misunderstanding between the informer and receiver caused by ambiguous voice reporting.
In practice, we use smart phones to obtain real-time audio/video data and converted them to segmented MP4 format with DASH technology, then transmit them to the monitor screen of 1999 workstation. Therefore, the receiver of workstation can realize the needs of informers much faster and make responses as soon as possible then provide supports to them.
Other technologies integrates in this system includes backend cloud storage platform, smart phone GPS location, WebRTC. These technologies can be used to store event data for playing back, locating event location and provide real-time voice communication between informer and receiver.

摘要 i
ABSTRACT ii
誌謝 iii
第一章、序論 1
1.2 文獻瀏覽 2
1.3 研究目標 4
1.4 論文架構 4
第二章、相關技術 5
2.1 HTTP Adaptive Streaming(HTTP自適應串流) 5
2.2 MPEG-DASH架構 7
2.3 MP4分段方式 8
2.4 Android相關技術 11
(1) MediaCodec 11
(2) JNI技術 12
(3) Android NDK技術 12
2.5 網頁端應用技術 13
(1) HTTP/2.0 Server Push技術 13
(2) HTTP/1.1 WebSocket傳輸技術 13
(3) MSE技術 14
(4) WebRTC技術 15
第三章、所提方法與系統設計 17
3.1 1999系統架構 18
3.2移植MPEG-DASH至Android系統 19
3.3 資料傳輸策略 21
第四章、系統實作與結果分析 24
4.1實驗環境 24
4.2實驗結果與討論 24
第五章、結論與未來工作 28
5.1 結論 28
5.2 未來工作 28
參考文獻 29

[1] H. Schulzrinne, A. Rao, R. Lanphier, “Real Time Streaming Protocol (RTSP),” RFC 2326, http://tools.ietf.org/html/rfc2326.
[2] H. Schulzrinne, et al., “RTP : A Transport Protocol for Real-Time Applications,” IETF RFC 3550, July 2003.
[3] A. Heikkinen, T. Ojanperä and J. Vehkaperä, "Dynamic cache optimization for DASH clients in Content Delivery Networks," 2016 13th IEEE Annual Consumer Communications & Networking Conference (CCNC), Las Vegas, NV, 2016, pp. 980-983.
[4] W. Pu, Z. Zou and C. W. Chen, "Dynamic Adaptive Streaming over HTTP from Multiple Content Distribution Servers," 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, Houston, TX, USA, 2011, pp. 1-5.
[5] I. Sodagar, “The MPEG-DASH Standard for Multimedia Streaming Over the Internet,” IEEE Multimedia, vol. 18 , 2011, pp. 62-67.
[6] R. Fielding et al., “Hypertext Transfer Protocol - HTTP/1.1”, IETF RFC 2616, June 1999.
[7] Apple Developer. (2011). HTTP Live Streaming Overview [Online]. Available: https://developer. apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/StreamingMediaGuide.pdf
[8] Andrew Fecheyr-Lippens. (2010). A Review of HTTP Live Streaming [Online]. Available: http://files.andrewsblog.org/http_live_streaming.pdf
[9] Microsoft. (2012). Experience IIS Smoooth Streaming [Online]. Available:
http://www.iis.net/media/ExperienceSmoothStreaming
[10] A. Zambelli. (2009). IIS Smooth Streaming Technical Overview [Online].
Available: http://jmvm.vse.cz/wp-content/uploads/2011/05/t_IIS_Smooth_Streaming_Technical_Overview.pdf
[11] D. Hassoun. (2010). Dynamic streaming in Flash Media Server 3.5 – Part 1: Overview of the new capabilities [Online]. Available:
http://www.adobe.com/devnet/adobe-media-server/articles/dynstream_advanced_pt1.html
[12] Adobe. (2012). Adobe HTTP Dynamic Streaming. [Online]. Available: http://www.adobe.com/products/hds-dynamic-streaming.html
[13] L. R. Romero. (2011, October 6). A Dybanuc Adaptive HTTP Streaming Video Service for Google Android [Online]. Available:
http://kth.diva-portal.org/smash/get/diva2:507848/FULLTEXT01
[14] A. Aloman, A. I. Ispas, P. Ciotirnae, R. Sanchez-Iborra and M. D. Cano, "Performance Evaluation of Video Streaming Using MPEG DASH, RTSP, and RTMP in Mobile Networks," 2015 8th IFIP Wireless and Mobile Networking Conference (WMNC), Munich, 2015, pp. 144-151.
[15] T. Stockhammer, “Dynamic adaptive streaming over HTTP–standards and design principles,” in Proceedings of the second annual ACM conference on Multimedia systems, New York, USA, 2011, pp. 133-144.
[16] C. Müller, S. Lederer, and C. Timmerer, “An evaluation of dynamic adaptive streaming over HTTP in vehicular environments,” in Proceedings of the 4th Workshop on Mobile Video, New York, USA, 2012, pp. 37-42.
[17] T. Lohmar, T. Einarsson, P. Frojdh, F. Gabin, and M. Kampmann, “Dynamic adaptive HTTP streaming of live content,” IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), Lucca, Italy, 2011, pp. 1-8.
[18] T. C. Thang, H. T. Le, A. T. Pham and Y. M. Ro, "An Evaluation of Bitrate Adaptation Methods for HTTP Live Streaming," in IEEE Journal on Selected Areas in Communications, April 2014, vol. 32, no. 4, pp. 693-705.
[19] C. Zhou, C. W. Lin, X. Zhang and Z. Guo, "A Control-Theoretic Approach to Rate Adaption for DASH Over Multiple Content Distribution Servers," in IEEE Transactions on Circuits and Systems for Video Technology, April 2014, vol. 24, no. 4, pp. 681-694.
[20] S. Lederer, C. Müller, and C. Timmerer, “Dynamic adaptive streaming over HTTP dataset,” in Proceedings of the 3rd Multimedia Systems Conference, New York, USA, 2012, pp. 89-94.
[21] V. N. Minh, P. H. Phong and P. N. Nam, "A probability-based adaption method for server-pushed streaming over HTTP 2.0," 2016 IEEE Sixth International Conference on Communications and Electronics (ICCE), Ha Long, 2016, pp. 25-29.
[22] C. Mueller, S. Lederer, C. Timmerer and H. Hellwagner, "Dynamic Adaptive Streaming over HTTP/2.0," 2013 IEEE International Conference on Multimedia and Expo (ICME), San Jose, CA, 2013, pp. 1-6.
[23] J. Jiang, V. Sekar and H. Zhang, "Improving Fairness, Efficiency, and Stability in HTTP-Based Adaptive Video Streaming With Festive," in IEEE/ACM Transactions on Networking, Feb. 2014, vol. 22, no. 1, pp. 326-340.
[24] G. L. Zhu, F. Zhang, W. Zhu, Y. Y. Zheng, “HTML5 based media player for real-time video surveillance,” International Congress on Image and Signal Processing (CISP), Chongqing, Sichuan, China, 2012, pp. 245-248.
[25] D. Lulic, M. Radonjic, M. Milosevic and K. Lazic, "One solution of MPEG-DASH stack integration to Android platform," 2015 23rd Telecommunications Forum Telfor (TELFOR), Belgrade, 2015, pp. 764-767.
[26] P. Lubbers and F. Grecco. HTML5 Web Sockets: A Quantum Leapin Scalability for the Web [Online]. Available:http://www.websocket.org/quantum.html
[27] D. Skvorc, M. Horvat and S. Srbljic, "Performance evaluation of Websocket protocol for implementation of full-duplex web streams," 2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO), Opatija, 2014, pp. 1003-1008..
[28] M. Laine and K. Saila, “Performance evaluation of XMPP on theWeb,” Finland, 2012.
[29] A. Almasi and Y. Kuma, “Evaluation of Websocketcommunication in enterprise architecture,” Sweden, 2013
[30] Shuai Zhao, Z. Li and D. Medhi, "Low delay streaming of DASH content with WebRTC data channel," 2016 IEEE/ACM 24th International Symposium on Quality of Service (IWQoS), Beijing, 2016, pp. 1-2.