Youtube Better Player

Scroll wheel volume, "Are you there" popup bypass, Volume percent display, Infinite autoplay, Volume save

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Youtube Better Player
// @namespace    https://greasyfork.org/en/users/670188-hacker09?sort=daily_installs
// @version      1
// @description  Scroll wheel volume, "Are you there" popup bypass, Volume percent display, Infinite autoplay, Volume save
// @author       hacker09
// @include      *
// @icon         https://www.youtube.com/s/desktop/03f86491/img/favicon.ico
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_addStyle
// ==/UserScript==

var enableVolumeAutoSet = false;

class Player {
  constructor() {
    this.volumeSk = 'volume'
  }

  async init(isEmbed) {
    const api = this.api = await this.getApi(isEmbed)

    this.volume = Number(GM_getValue(this.volumeSk))

    if (isNaN(this.volume)) {
      this.volume = Math.floor(api.getVolume())
      GM_setValue(this.volumeSk, this.volume)
    }
    else if (enableVolumeAutoSet) {
      api.unMute()
      api.setVolume(this.volume)
    }

    const {$player, $video, $eventCatcher, $volumeArea, $volumeBar} = this.getEls()

    this.$volumeText = this.buildVolumeText($volumeArea)

    const onVolumeChange = this.onVolumeChange.bind(this)
    $video.addEventListener('volumechange', onVolumeChange)

    new WheelVolume(this, api, $volumeBar, $player).init($eventCatcher)

    if (!isEmbed) new RealAutoPlay(api).init($video)
  }

  async getApi(isEmbed) {
    if (isEmbed) {
      let api
      while (!(api = unsafeWindow.movie_player)) await wait(200)

      return api
    }

    let $el, api

    while (!($el = unsafeWindow['ytd-player'])) await wait(1000)
    while (!(api = $el.player_)) await wait(200)
    while (!api.isReady()) await wait(200)

    return api
  }

  getEls() {
    const $player = $('#movie_player')
    const $video = $('.html5-main-video', $player)
    const $eventCatcher = $player.parentElement
    const $volumeArea = $('.ytp-volume-area', $player)
    const $volumeBar = $('.ytp-volume-slider', $volumeArea)

    return {$player, $video, $eventCatcher, $volumeArea, $volumeBar}
  }

  buildVolumeText($volumeArea) {
    const $volumeText = document.createElement('span')
    $volumeText.classList.add('ytbp-volume-text')
    $volumeText.textContent = this.volume
    GM_addStyle(volumeTextStyle)

    $volumeArea.insertAdjacentElement('beforeend', $volumeText)

    return $volumeText
  }

  onVolumeChange() {
    this.volume = this.$volumeText.textContent = Math.floor(this.api.getVolume())

    clearTimeout(this.saveTimeout)

    this.saveTimeout = setTimeout(() => GM_setValue(this.volumeSk, this.volume), 1000)
  }
}

class WheelVolume {
  constructor(player, api, $volumeBar, $player) {
    this.player = player
    this.api = api
    this.$volumeBar = $volumeBar
    this.$player = $player

    this.events = {
      mouseover: new Event('mouseover', {bubbles: true}),
      mouseout: new Event('mouseout', {bubbles: true}),
      mousemove: new Event('mousemove')
    }
  }

  init($eventCatcher) {
    const onWheel = this.onWheel.bind(this)
    const onClick = this.onClick.bind(this)

    $eventCatcher.addEventListener('wheel', onWheel)
    $eventCatcher.addEventListener('mousedown', onClick)
  }

  onWheel(e) {
    e.preventDefault()
    e.stopImmediatePropagation()

    this.show()

    const api = this.api
    const now = Date.now(), since = now - this.prevScrollDate
    const step = (e.deltaY < 0 ? 1 : -1) * (since < 50 ? 4 : 1)

    if (api.isMuted()) api.unMute()

    api.setVolume(this.player.volume + step)

    this.prevScrollDate = now
  }

  onClick(e) {
    if (e.which != 2) return

    e.preventDefault()

    this.show()

    const api = this.api

    if (api.isMuted()) {
      api.unMute()
      api.setVolume(this.player.volume)
    }
    else api.mute()
  }

  show() {
    const $volumeBar = this.$volumeBar, events = this.events

    this.$player.dispatchEvent(events.mousemove)

    clearTimeout(this.showTimeout)

    $volumeBar.dispatchEvent(events.mouseover)

    this.showTimeout = setTimeout(() => $volumeBar.dispatchEvent(events.mouseout), 1000)
  }
}

class RealAutoPlay {
  constructor(api) {
    this.api = api

    this.popupName = 'yt-confirm-dialog-renderer'

    const popupEl = $('ytd-popup-container', unsafeWindow.document)
    this.popupContainer = popupEl.polymerController ?? popupEl.inst
  }

  init($video) {
    const $autonavToggleButton = $('.ytp-autonav-toggle-button')

    this.autoNavEnabled = $autonavToggleButton.ariaChecked

    $autonavToggleButton.addEventListener('click', onToggleAutoNav)

    const bypassPopup = this.bypassPopup.bind(this)
    const forceNextVideo = this.forceNextVideo.bind(this)
    const onToggleAutoNav = this.onToggleAutoNav.bind(this)

    $video.addEventListener('pause', bypassPopup)
    $video.addEventListener('waiting', bypassPopup)
    $video.addEventListener('ended', forceNextVideo)
  }

  bypassPopup() {
    const popup = this.popupContainer.popups_?.[this.popupName]

    if (!popup) return

    this.api.playVideo()

    popup.popup.remove()
    delete this.popupContainer.popups_[this.popupName]
  }

  forceNextVideo() {
    if (this.autoNavEnabled && !document.hasFocus()) this.api.nextVideo()
  }

  onToggleAutoNav() {
    this.autoNavEnabled = !this.autoNavEnabled
  }
}

const init = async () => {
  const isEmbed = location.pathname.startsWith('/embed/')

  if (isEmbed) await new Promise(r => $('.html5-main-video').addEventListener('canplay', r, {once: true}))

  new Player().init(isEmbed)
}

const volumeTextStyle = `
.ytbp-volume-text {
    position: relative;
    top: -0.5px;
    width: 0;
    text-indent: 2px;
    overflow: hidden;
    color: #ddd;
    font-size: 109%;
    text-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
    transition: width .2s
}
.ytbp-volume-text:after { content: '%' }
.ytp-volume-control-hover:not([aria-valuenow="0"], [aria-valuenow="100"]) + .ytbp-volume-text {
    width: 2.5em
}
`

const $ = (sel, el = document) => el.querySelector(sel)

const wait = (ms) => new Promise(r => setTimeout(r, ms))

init()