VidAd - Express middleware to send in-stream ads

VidAd offers a simple way to show in-stream ads during the streaming of large videos.

Installation

To install using [npm]

npm install vidad

Setup

To setup VidAd you only need to include the following line right after creating your express app instance:

var app = express();  // Create your Express app
require('vidadd')(app);  // include this line to setup middleware

Usage

To stream out the main video as well as the in-stream ad clip, include the following line:

res.sendVideo(mainVideoFile, adClipFile, relativePosition, function(err){ /* Error handling code goes here */ });

A detailed description of arguments comes below:

mainVideoFile

The first argument is the main video file name

adClipFile

The second argument is the ad clip file name which is going to be served as the in-stream ad

relativePosition

The third argument is the a number between 0 and 1 that specifies the position where the in-stream ad is to be shown

callback

The last argument is a callback function to handle errors. The following errors are provided to the callback:

• Error: ENOENT, no such file or directory

  (The file does not exist or the path is not correct)

• Error: Range not satisfied

  (Video player app does not provide a range header to the server)

• Error: Stream file not identified in the request body

  (Video player app not specified which video needs to be played)

Example

The following example is a simple app to send the "main-video.mp4" file to the Video player app and shows the "ad-video-clip.mp4" file, right at the middle of streaming.

var express = require('express');
var path = require('path');
var app = express();
require('vidadd')(app);


app.route('/get-video').get(function(req, res){
  
  res.sendVideo(path.resolve(__dirname,"main-video.mp4"), 
  				path.resolve(__dirname,"ad-video-clip.mp4"), 
  				0.5, 
  				function(err){
	  				if(err){
	  					console.log(err);
	  					res.status(400).send('I hate to say that, but something went wrong!');
	  				}
  			});
});


app.listen(8080, function(){
  console.log('App started on port 8080');
});

License

MIT