kevinGodell · September 20, 2017 22:53 · Sep 20, 2017
diff --git a/mpeg-dash-ffmpeg-dashjs.md b/mpeg-dash-ffmpeg-dashjs.md
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+# Live streaming mpeg-dash video using ffmpeg and dash.js
+
+Use ffmpeg to connect to an ip cctv camera and create video files on the fly that can be viewed in an mpeg-dash compatible browser using dash.js and an html5 video element.
+
+### Prerequisites
+
+```
+A linux server, such as Ubuntu
+
+Apache web server installed, running, and reachable via its ip address
+
+Latest version of Ffmpeg installed
+
+An ip camera that is reachable from the server
+```
+
+### Configuring Server
+
+Get root access.
+
+```
+sudo su
+```
+
+Make a new directory in /dev/shm. This is crucial because we will be constantly writing files and do not want to target the hard drive.
+
+```
+mkdir /dev/shm/mpeg-dash
+```
+
+Create a symlink from /dev/shm/mpeg-dash to the public directory where apache serves files.
+
+```
+ln -s /dev/shm/mpeg-dash /var/www/html
+```
+
+Create an html file that contains the necessary code to display the mpeg-dash video.
+
+```
+cat > /var/www/html/mpeg-dash/index.html << EOF
+<!DOCTYPE html>
+<head>
+<meta charset="UTF-8">
+<script src="https://cdn.dashjs.org/latest/dash.all.min.js"></script>
+<style>
+    video {
+        width: 640px;
+        height: 480px;
+    }
+</style>
+<body>
+    <div>
+        <video data-dashjs-player autoplay controls src="manifest.mpd" type="application/dash+xml"></video>
+    </div>
+</body>
+</html>
+EOF
+```
+
+### Generating Video
+
+Run ffmpeg with the correct parameters to connect to your ip camera and generate the mpeg-dash video files.
+
+```
+ffmpeg -i rtsp://ip_cam_address:554/user=user_password=password_channel=1_stream=0.sdp -an -c:v copy -b:v 2000k -f dash -window_size 4 -extra_window_size 0 -min_seg_duration 2000000 -remove_at_exit 1 /var/www/html/mpeg-dash/manifest.mpd
+```
+
+### View Video
+
+Open an mpeg-dash compatible browser such as Chrome, Firefox, Safari, or IE11(Windows 8+ only).
+
+Enter the address to the directory on your server. ```http://YOUR_SERVER_IP_ADDRESS/mpeg-dash/```