RTP/RTCP Accomplishment Of Video Transmission Based On DSP

Along with the rapid development of network, real-time multi-media communication has been a very important operation among network communication operations. These operations include video on demand,picture telephone,video conference,remote education,stream muti-media etc., and the key technologies of these applications are data collection and transmission of digital video. Embedded video communication terminals are becoming more and more attractive. The network interface and real time-video transmission are the comparatively important modules.The thesis was based on TI's digital media DSP DM642. RTP/RTCP were employed to transfer the video streams for remote video monitoring in real-time upon ethernet network interface. Based on DSP/BIOS, the TI Network developing kit (NDK) was employed to support the TCP/IP protocol stack and the network driver was finished with suitable interface configuration.The application software on DM642 employed H.263 video codec standard. To overcome the issues related to video transmission based on UDP, RTP/RTCP were combined to deliver video data to improve the rapidity and QoS. In addition, The H.263 decoder running on the PC was implemented supporting RTP/RTCP data communication and mainly included two modules of RTP video data receiving and decoding. DSP code test tools were utilized to test the codes running on DSP, then accomplish the real-time video communication between DSP terminal and PC.