树莓派 摄像头 远程
http://blog.sina.com.cn/s/blog_4e0c21cc0102xzx0.html
sudo raspivid -o - -t 0 -w 640 -h 360 -fps 25|cvlc -vvv stream:///dev/stdin --sout '#standard{access=http,mux=ts,dst=:8090}' :demux=h264
http://blog.sina.com.cn/s/blog_4e0c21cc0102xzx0.html
sudo raspivid -o - -t 0 -w 640 -h 360 -fps 25|cvlc -vvv stream:///dev/stdin --sout '#standard{access=http,mux=ts,dst=:8090}' :demux=h264