教学辅助软件，可以录取老师头像，声音，还有桌面-help teachers to record the courses for students

海康DS-40xxSDK板卡开发辅助文档，包括DS-4000MD、数字视频矩阵方案 ，DS-4100、4000HC系列板卡SDK编程指南_5.0_1524 ， Hikvision H264播放器编程指南V4.9， Hikvision 板卡网络开发包编程手册V4.7-Kang DS-40xxSDK development board supporting documentation, including DS-4000MD, digital video matrix solution, D

YUV文件播放器，可辅助分析得到的YUV文件是否正确。-YUV file player can get assisted analysis YUV file is correct.