rpi_mjpg_streamer

Raspberry Pi's "camera module" together with PIR sensor based NodeJS web application for MJPG-Streaming.

Table of Contents

• Installation
• Configuration
• Usage
• Contributing
• References

Installation

First of all install the prerequisites:

$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get install g++ curl pkg-config libv4l-dev libjpeg-dev build-essential libssl-dev cmake git-core build-essential libjpeg8-dev imagemagick subversion
$ sudo apt-get autoremove
$ sudo shutdown -r now

Then we can install motion-jpeg (mjpeg):

 $ cd /usr/src
 $ sudo mkdir mjpg-streamer
 $ sudo chown pi:users mjpg-streamer
 $ cd mjpg-streamer
 $ git clone //github.com/jacksonliam/mjpg-streamer.git .
 $ cd mjpg-streamer-experimental
 $ make
 $ sudo make install

After the compilation, shutdown the pi and attach the camera:

 $ cd /usr/src/mjpg-streamer/mjpg-streamer-experimental/
 $ export LD_LIBRARY_PATH=.
 $ ./mjpg_streamer -o "output_http.so -w ./www" -i "input_raspicam.so -x 640 -y 480 -fps 20 -ex night"

My RPi has the following IP address: 192.168.20.83 so you can see the camera at http://192.168.20.83:8080/stream.html

Configuration

⚠️ Warning: keep in mind the following points:

• NodeJS Web server port: 8080
• MJPG-Streamer server port: 8081
• The project is intended to be installed inside "/home/pi" path.

The following tweaks are needed in order to make it work:

1. If you want or have to customize the path of the project, the following files must be edited:

• server.js

var path_rpi_mjpg_streamer = "/home/pi/rpi_mjpg_streamer"

• mjpg-streamer/
• camera_stop.sh:

echo -n 0 > "/home/odamae/odamaeweb_mjpg-streamer/public/resources/estado_mjpgstreamer.txt"

• camera_start.sh:

echo -n 1 > "/home/odamae/odamaeweb_mjpg-streamer/public/resources/estado_mjpgstreamer.txt"
./mjpg_streamer -o "output_http.so -w /home/odamae/odamaeweb_mjpg-streamer/mjpg-streamer/www -p 8081 -c <user>:<passwd>" -i "input_raspicam.so -rot 270 -fps 25 -q 50 -x 320 -y 240 ex nig$

• spibox/
• spiboxmessenger.py:

spiboxConf.read('/home/pi/rpi_mjpg_streamer/spibox/spibox.conf')
for file in os.listdir("/home/pi/rpi_mjpg_streamer/resources/photos"):
pid = subprocess.call(['sudo','mv','/home/pi/rpi_mjpg_streamer/resources/photos/'+filename,'/home/pi/rpi_mjpg_streamer/resources/archive/'])
cmd = 'mpack -s "'+self.emailsubject+'" -c image/jpeg /home/pi/rpi_mjpg_streamer/resources/photos/'+filename + ' '+self.emailrecipient

• spibox.py:

cmd="raspistill -w 640 -h 480 -rot 270 -n -t 10 -q 10 -e jpg -th none -o /home/pi/rpi_mjpg_streamer/resources/photos/" + capturename+"_%d.jpg" % (i)

• spibox_stop.sh:

echo -n 0 > "/home/pi/rpi_mjpg_streamer/public/resources/estado_spibox.txt"

• spibox_start.sh:

echo -n 1 > "/home/pi/rpi_mjpg_streamer/public/resources/estado_spibox.txt"

• borra_galeria.sh:

cd /home/pi/rpi_mjpg_streamer/resources/photos

• public/resources/ Just configure the following configuration file:
• project_path_config.php

<?php
$rpi_mjpg_streamer_path = '/home/pi/rpi_mjpg_streamer';
?> 

Additionaly, check that the following lines of "/public/index.html" contains the proper IP address (and MJPG-Streamer PORT):

<div id="arriba">
    <object data="http://192.168.20.83:8081/?action=stream" width="320" height="240">
        <embed src="http://192.168.20.83:8081/?action=stream" width="320" height="240"> </embed>
               Error: No se ha podido cargar el vídeo.
    </object>
</div>

Usage

To be sure that the application is running continously, we will use "Forever" NodeJS module:

$ [sudo] npm install forever -g

⚠️ Note: If you want to use "forever" programmatically you should install forever-monitor.

  $ cd /path/to/your/project
  $ [sudo] npm install forever-monitor

Once "forever" is installed we launch the application:

 $ cd <project_path>
 $ forever start nserver.js

🔧 Troubleshooting:

The "forever" binary file location: /opt/nodejs/bin/forever In order to be globally available the following "EXPORT" line has to be added in ".bashrc":

$ nano /root/.bashrc
	
    export PATH=$PATH:/opt/nodejs/bin

$ exec bash

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request :D

References

The following is a list of useful references used for the development of the application:

• Getting Node and Motion Jpeg onto a R-Pi
• Node.js app with forever running as a service daemon
• SPi-Box Manual