static isSupported (mime = 'video/mp4; codecs="avc1.42E01E,mp4a.40.2"') {
    const MediaSource = getMediaSource()
    if (!MediaSource) return false
    try {
      return MediaSource.isTypeSupported(mime)
    } catch (error) {
      this._logger.error(mime, error)
      return false
    }
  }
@param {string} [mime='video/mp4; codecs="avc1.42E01E,mp4a.40.2"']
@param { boolean} preferMMS
@returns {boolean}