constructor (videoTrack, audioTrack, options) {
    this.videoTrack = videoTrack
    this.audioTrack = audioTrack
    const browserVersions = /Chrome\/([^.]+)/.exec(navigator.userAgent)
    this.forceFirstIDR = browserVersions && Number(browserVersions[1]) < 50
    this.log = new Logger('FMP4Remuxer', options && options.openLog ? !options.openLog : true)
  }
@param {import('../model').VideoTrack} videoTrack
@param {import('../model').AudioTrack} audioTrack