📹 Video encoding / transcoding / converting with node.js - Awesomeness

hTranscoder.js

// Load handbrake library for transcoding
var transcoder = require('handbrake-js');

transcoder.spawn({ input: 'spiderman.avi', output: 'spiderman.mkv' })

  .on('error', function(err){
    if(err)
      throw err
    // Invalid user input data, no video data found
  })

  .on('progress', function(progress){

    // Log Percentage completion and ETA
    // Do your loading bar with percentage processing here
    console.log(
      'Percent completion: %s, EstimatedTimeAmount: %s',
      progress.percentComplete,progress.eta
    );
  
});