ew({
      cloud_name: 'cloudinary-training',
      secure: true
    })

    // Initialize player
    const player = cld.videoPlayer('example-player')

    // add your video text tracks
    player.source(
      'ul-video',
      {
        textTracks: {
          captions: {
            label: 'English captions',
            language: 'en',
            default: true,
            url: 'https://res.cloudinary.com/cloudinary-training/raw/upload/ul-video.vtt'
          },
          subtitles: [
            {
   