How to convert YouTube API duration (ISO 8601 duration in the format PT#M#S) to seconds

Question

How can I manipulate a date time in the format PT#M#S with JavaScript?

for example: PT5M33S

I'd like to output as hh:mm:ss.

Answer 1

Here's the basic code to get total number of seconds and other parts. I feel uneasy doing this, as the rule says that any time you want to date logic you shouldn't :) But anyways, here it goes - Google made it not easy, providing total seconds in the getduration player API, and providing totally different format in the gdata api.

          var reptms = /^PT(?:(\d+)H)?(?:(\d+)M)?(?:(\d+)S)?$/;
          var hours = 0, minutes = 0, seconds = 0, totalseconds;

          if (reptms.test(input)) {
            var matches = reptms.exec(input);
            if (matches[1]) hours = Number(matches[1]);
            if (matches[2]) minutes = Number(matches[2]);
            if (matches[3]) seconds = Number(matches[3]);
            totalseconds = hours * 3600  + minutes * 60 + seconds;
          }

Answer 2

Here is how you can get a youtube video data via Youtube API (v3) in a simple way and convert the video duration (ISO 8601) to seconds. Don't forget to change the { YOUR VIDEO ID } and { YOUR KEY } attribute in URL to your video id and your public google key. You can create a public key accessing the google developer console.

  $.ajax({
       url: "https://www.googleapis.com/youtube/v3/videos?id={ YOUR VIDEO ID }&part=contentDetails&key={ YOUR KEY }",
       dataType: "jsonp",
       success: function (data) { youtubeCallback (data); }
  });

    function youtubeCallback(data) {

        var duration = data.items[0].contentDetails.duration;
        alert ( convertISO8601ToSeconds (duration) );
    }        

    function convertISO8601ToSeconds(input) {

        var reptms = /^PT(?:(\d+)H)?(?:(\d+)M)?(?:(\d+)S)?$/;
        var hours = 0, minutes = 0, seconds = 0, totalseconds;

        if (reptms.test(input)) {
            var matches = reptms.exec(input);
            if (matches[1]) hours = Number(matches[1]);
            if (matches[2]) minutes = Number(matches[2]);
            if (matches[3]) seconds = Number(matches[3]);
            totalseconds = hours * 3600  + minutes * 60 + seconds;
        }

        return (totalseconds);
    }