文本聊天，文件传输；视频传输：截取网上的Avchat的源码（需要filtershow(XP系统中filter字符串可能为‘视频捕获’或者‘capture’，采集传输解码）-Text chat, file transfer video transmission: the interception of the web Avchat source (requires filtershow (XP system in the filter string may be ' video captu