Here's a walk-through of the steps I took to get a webcam stream on the Internet from my Raspberry Pi. Equipment:
8G class 4 Sandisk SD card
5V 1A MicroUSB power supply
Webcam (PS3 EyeToy)
Prepare the OS
Arch Linux ARM - you can get the image file from the Raspberry Pi download page.
Write the image to the SD card. (I use Win32DiskImager)
Expand the main partition to fill the SD card. From my Windows laptop I booted to a GParted Live CD to do this.
Change the root password!
passwd rootSet up a fixed IP address. (You may need to change your router settings to define a fixed IP address range) Edit /etc/rc.conf using nano:
nano /etc/rc.confFollow the instructions to set up your fixed IP something like this:
interface=eth0 address=192.168.0.101 netmask=255.255.255.0 broadcast=192.168.0.255 gateway=192.168.0.1Also change resolv.conf to use your router for name resolution:
nameserver 192.168.0.1Since this Pi is running headless we don't need so much RAM allocated to the GPU. So swap the default start.elf for the 224 version:
cd /boot mv start.elf orig-start.elf cp arm224_start.elf start.elfUnplug the keyboard and HDMI, reboot and then ssh to your Pi. (I use PuTTY) Start streaming
Update your packages and install mplayer and ffmpeg:
pacman -Syu pacman -S mplayer pacman -S ffmpegCreate an ffserver.conf configuration file in /root. Here's mine:
Port 8090 BindAddress 0.0.0.0 MaxClients 4 MaxBandwidth 10000 NoDaemon <Feed webcam.ffm> File /tmp/webcam.ffm FileMaxSize 5M </Feed> <Stream webcam.asf> Feed webcam.ffm Format asf VideoCodec msmpeg4 VideoFrameRate 2 VideoBufferSize 80000 VideoBitRate 200 VideoQMin 1 VideoQMax 10 VideoSize qvga PreRoll 0 Noaudio </Stream> <Stream webcam.mjpeg> Feed webcam.ffm Format mpjpeg VideoSize qvga VideoFrameRate 2 VideoIntraOnly Noaudio Strict -1 </Stream>Start the streaming server:
ffserver -f /root/ffserver.conf & ffmpeg -v 2 -r 5 -s 640x480 -f video4linux2 -i /dev/video0 http://localhost:8090/webcam.ffmYou should now have two streams available from your Raspberry Pi. One is an asf stream which you can connect to from players like Windows Media Player or VLC. The other is an mjpeg stream which you can view from a web browser without requiring any plugins.
The mjpeg URL is:
http://192.168.0.101:8090/webcam.mjpegThe asf stream is:
http://192.168.0.101:8090/webcam.asfPut it on the Internet
If you just want to see this on the Internet temporarily simply open up port 8090 on your home router firewall settings. Set up an Inbound Service on port 8090 to 192.168.0.101. Now find your external ip address and you should be able to connect through that. Your external address will probably be shown somewhere in your router web interface or you can find it by going to here: http://ip.dnsexit.com/
Your external address will change occasionally unless you have a fixed IP address. In another post I'll show how to set up Dynamic DNS with an address updater so you can reach your Pi on the net through a name rather than address. The updater ensures that if your external address changes the Dynamic DNS provider is given the new one.
*** UPDATE NOTE: I am now using Motion instead of ffserver see this new post: Battery powered, Wireless, Motion detecting Raspberry Pi ***
My Raspberry Pi webcam stream is sometimes available here: http://jerbly.uk.to/picam
Please be gentle. If you don't see a stream try again another time!