Using the UV4L driver to stream video from the raspberry pi camera to android phone

Question

Hello raspberry people!

I'm posting a new question because I don't have enough rep on raspberrypi.stackexchange to post a comment on this post: https://raspberrypi.stackexchange.com/questions/15000/stream-video-from-rpi-cam-to-android-phone which sort of has a solution to my problem, only I cannot get it to work :(

In short, I want to control a robot from my Android, inside the robot is a raspberry pi with a raspberry pi camera. So for starters I want to just stream video from the robot to a java app on my phone.

.

The first comment on the aforementioned question links to this post which shows how to stream video from a Raspberry to an Android phone using a PS eye as camera.

The fourth comment by 'alex' says, regarding the use of a raspberry pi camera instead of a PS eye camera:

I've found the solution: I had to install the uv4l driver 
to use the RaspiCam as /dev/video0 and I had to modify the gst-server.sh : 
inserted videoscale !\ after ffmpegcolorspace !\ and it works :)

So Im following this guide to install the uv4l driver on the raspberry pi: http://www.linux-projects.org/modules/sections/index.php?op=viewarticle&artid=14

Which i think is running these terminal commands:

wget http://www.linux-projects.org/listing/uv4l_repo/lrkey.asc && sudo apt-key add ./lrkey.asc
Adding line to apt sources -->> deb http://www.linux-projects.org/listing/uv4l_repo/raspbian/ wheezy main
sudo apt-get update
sudo apt-get install uv4l uv4l-raspicam
sudo apt-get install uv4l-raspicam-extras

Now, if I quickly test the UV4L driver

dd if=/dev/video0 of=snapshot.jpeg bs=11M count=1

All I get is a totally black snapshot.jpeg

Also, if I try to restart the driver:

sudo service uv4l_raspicam restart

I get this warning:

pi@raspberrypi /etc/uv4l $ sudo service uv4l_raspicam restart
[....] Starting UV4L Raspberry CSI Camera Driver: uv4l
<notice> [core] Trying built-in driver 'raspicam'
<warning> [core] Driver 'raspicam' not found
<notice> [core] Trying driver plug-in 'raspicam'
<notice> [driver] Raspicam Video4Linux2 Driver v1.9.19 built Jul 12 2014
<notice> [driver] Selected format: 1920x1080, encoding: mjpeg, JPEG Video Capture
<notice> [driver] Framerate max. 30 fps
<notice> [driver] ROI: 0, 0, 1, 1
<notice> [core] Device detected!
<notice> [core] Loading the CUSE kernel module
<notice> [core] Registering device node /dev/video0

Any insight is gladly appreciated! And, sorry for the longish post :(

Many many thanks!

Answer 1

For me I got it to work by running this:

sudo apt-get install uv4l-server
sudo apt-get install uv4l-uvc
sudo apt-get install uv4l-xscreen
sudo apt-get install uv4l-mjpegstream

Link url

Answer 2

Now UV4L supports Audio/Video streaming with WebRTC, which allows you to get the live stream to your Android phone and/or other browsers.