array object of thumbnails for video.js thumbnails plugin

gistfile1.js

 var arr=[],
 duration=100;
 var num=duration/10;
var j=0;
var k=0;
 for(var i=0; i<num; i++ ){

  arr.push(k={'src': '/assets/js/'+j+'.png'});

  j=j+5;
   k=k+5;
 }