The Research and Adaption H.264 Video Transmission Based on Bandwidth Auto Detection

• Main Authors: Chiao-Min Yang, 楊喬閔
• Other Authors: 李維聰
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/96672682872454682759

碩士 === 淡江大學 === 電機工程學系碩士班 === 95 === H.264 format is a compressed technique that matchs to all kind of applicated terms.Such as broadcast、 DVD、media-meeting、VOD ( Video on Demand ) 、media-stream and multimedia ,In advance ,H.264 technique is able to offer the excellent picture quality in every kind of applicated condition including mobile phone、iChat、 Internet、boardcast and transmission of satellites. H.264 technique works excellently as providing high picture quality by low ratio data-rate. Because the characters of H.264 technique form as low ratio data-rate transmited, it is very suitable to apply the remote transmission .Hopefullly , we wish to be able to wath all domestic TV-programs by installing some platform when being far away outdoor even oversea.It always happens to lack enough bandwidth or get worst signal , thus the Auto bit-rate technique improves the above two points; Althouh it may loss fine dpi , the stable AV quality is still worth overall.That is why we promote the Auto bit-rate technique with more convenience for tuning the optimal configuration in system. We monitor all kinds of situation by experiment ; meantime , with tuning the timing RTCP detect and computing bit-rate . After all , it goes smoothly with lower bit-rate under limited bandwidth ,but the picture quality isn’t fine enough . As oppositely speaking , the picture quality is better with larger bit-rate; meantime , it also impact the system such as the whole loading and etc.Therefore , in the real network system ,with the limited bandwidth , it is not overemphasized to make the whole system optimal automatically as Auto bit-rate.We also realize how to configure the size of bit-rate ; not only for making the H.264 format more smoother , but for realizing the capacity of unhindered and the optimal managerment in advance.