Connecting Web Camera to A13-OLinuXino for video streaming

In our previous blog post we setup demo where A13-OLinuXino-WIFI both was running web server with MOD-RGB control and at the same time was streaming video from Web Camera so you can see the result from the MOD-RGB control https://olimex.wordpress.com/2013/02/27/a13-olinuxino-serving-mod-rgb-and-web-cam-for-live-stream/

Here is description how the video streaming was done:

USB video cameras use UVC driver which is not enabled by default in A13-OLinuXino kernel so have to be enabled additionally.

1. Installing UVC

• # git clone https://github.com/linux-sunxi/linux-sunxi.git
• # cd linux-sunxi
• # make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- a13_defconfig;make ARCH=arm menuconfig
• select in  Device Drivers -> Multimedia support -> Video capture adapters ->  V4L USB devices -> USB Video Class (UVC) (M)
• # make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j5 uImage modules
• # make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=output modules_install
• # cp arch/arm/uImage /<sdcard mount point>/<FAT Partition>/.
• # cp -aRv output/lib/modules/* /<sdcard mount point>/<EXT Partition>/lib/modules/.
• # reboot
• # modprobe uvcvideo

Now you have UVC support in your kernel and can use Web Camera for your Linux apps.

2.  Setup VLC Streaming

• # apt-get install vlc
• # chmod 777 /dev/video*
• # adduser vlc
• # su vlc
• # cvlc v4l2:// :v4l2-vdev=”/dev/video0″ :v4l-adev=”/dev/null” –sout
  ‘#transcode{vcodec=mpg1,vb=1024,vsize=320,hsize=240}:standard{access=http,mux=ogg,dst=:8080}’

last command is actually setting VLC streamer to stream mpg1 video 320×240 pixels at 8080 port, for more details check: http://wiki.videolan.org/