loop.js

for(var i = 0; i < items.length; i++){  
      if(items[i].attachments){
        for(var j = 0; j < items[i].attachments.length; j++){
          if(items[i].attachments[j].type == 'video'){
            feed.getVideo(items[i].attachments[j].video.owner_id, items[i].attachments[j].video.owner_id+'_'+items[i].attachments[j].video.id).then(function(result){
              videos[items[i].id].player = result.data.response.items[0].player;
            });
          }
        }
      }
    }