利用Linux下ALSA音频、V4L2视频采集接口采集视频数据，并通过UDP发送数据实现音频、视频通话，系统界面由Qt开发工具设计。嵌入式Linux软件开发，毕设。-Using Linux ALSA V4L2audio, video capture interface collecting video data, and through the UDP to send data to realize the audio, video call, system interface by Qt de

STUN服务器代码，用于NAT穿越, 用于及时通讯，视频通话， 语音通话等穿透-stun server source code， use for NAT P2P application

可实时且多路显示的视频监控系统,还包括录像、截屏、实时通话等功能-Real-time display and multi-channel video surveillance system Also includes videos , screenshots , real-time calls and other functions