YouTube Helper

YouTube 1.Loop playback of YouTube videos 2.screenshot download 3.themed progress bar.

Versione datata 14/03/2025. Vedi la nuova versione l'ultima versione.

Dovrai installare un'estensione come Tampermonkey, Greasemonkey o Violentmonkey per installare questo script.

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

Dovrai installare un'estensione come Tampermonkey o Violentmonkey per installare questo script.

Dovrai installare un'estensione come Tampermonkey o Userscripts per installare questo script.

Dovrai installare un'estensione come ad esempio Tampermonkey per installare questo script.

Dovrai installare un gestore di script utente per installare questo script.

(Ho già un gestore di script utente, lasciamelo installare!)

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione come ad esempio Stylus per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

Dovrai installare un'estensione per la gestione degli stili utente per installare questo stile.

(Ho già un gestore di stile utente, lasciamelo installare!)

// ==UserScript==
// @name         YouTube  Helper
// @name:zh-CN   YouTube 小助手
// @description  YouTube  1.Loop playback of YouTube videos 2.screenshot download 3.themed progress bar.
// @description:zh-CN YouTube 1.视频循环播放 2.截图下载 3.主题进度条
// @author       Carokahn,bernzrdo,FunnyMonkey,人民的勤务员 <[email protected]>
// @namespace    https://github.com/ChinaGodMan/UserScripts
// @supportURL   https://github.com/ChinaGodMan/UserScripts/issues
// @homepageURL  https://github.com/ChinaGodMan/UserScripts
// @license      MIT
// @icon         https://www.youtube.com/s/desktop/ee47b5e0/img/logos/favicon_144x144.png
// @match       https://www.youtube.com/*
// @match       https://m.youtube.com/*
// @compatible   chrome
// @compatible   firefox
// @compatible   edge
// @compatible   opera
// @compatible   safari
// @compatible   kiwi
// @compatible   qq
// @compatible   via
// @compatible   brave
// @version      2025.03.15.0436
// @grant        GM_addStyle
// @created      2025-03-14 20:36:01
// @modified     2025-03-14 20:36:01
// ==/UserScript==
/**
 * File: youtube-helper.user.js
 * Project: UserScripts
 * File Created: 2025/03/15,Saturday 04:36:02
 * Author: 人民的勤务员@ChinaGodMan ([email protected])
 * -----
 * Last Modified: 2025/03/15,Saturday 05:57:23
 * Modified By: 人民的勤务员@ChinaGodMan ([email protected])
 * -----
 * License: MIT License
 * Copyright © 2024 - 2025 ChinaGodMan,Inc
 */
const directDownload = true
const infiniteLool = true





const loopVideo = () => {
    const video = document.querySelector('video')
    if (video && !video.loop) {
        video.loop = true
    }
}
const ThemeProgressbar = () => {
    const css_248z = '.html5-play-progress,.ytp-play-progress{background:url("data:image/png;base64,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") repeat-x!important;background:linear-gradient(180deg,red 0,red 16.5%,#f90 0,#f90 33%,#ff0 0,#ff0 50%,#3f0 0,#3f0 66%,#09f 0,#09f 83.5%,#63f 0,#63f)!important;background:-webkit-linear-gradient(top,red,red 16.5%,#f90 0,#f90 33%,#ff0 0,#ff0 50%,#3f0 0,#3f0 66%,#09f 0,#09f 83.5%,#63f 0,#63f)!important;background:-moz-linear-gradient(top,red 0,red 16.5%,#f90 16.5%,#f90 33%,#ff0 33%,#ff0 50%,#3f0 50%,#3f0 66%,#09f 66%,#09f 83.5%,#63f 83.5%,#63f 100%)!important}.html5-load-progress,.ytp-load-progress{background:url("data:image/gif;base64,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")!important}.html5-scrubber-button,.ytp-scrubber-button{background:url("data:image/gif;base64,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")!important;border:none!important;height:21px!important;margin-left:-18px!important;margin-top:0!important;transform:scale(.8);-webkit-transform:scale(.8);-moz-transform:scale(.8);-ms-transform:scale(.8);width:34px!important}.ytp-progress-bar-container:hover .ytp-load-progress,.ytp-progress-bar-container:hover .ytp-scrubber-button{image-rendering:pixelated}.html5-progress-bar-container,.ytp-progress-bar-container{height:12px!important}.html5-progress-bar,.ytp-progress-bar{margin-top:12px!important}.html5-progress-list,.video-ads .html5-progress-list.html5-ad-progress-list,.video-ads .ytp-progress-list.ytp-ad-progress-list,.ytp-progress-list{height:12px!important}.ytp-volume-slider-track{background:#0c4177!important}'
    GM_addStyle(css_248z)
}

let escapeHTMLPolicy = 'trustedTypes' in window
    ? trustedTypes.createPolicy('forceInner', { createHTML: html => html })
    : { createHTML: html => html }
function screenBtnUpdate() {
    let $miniplayerBtn = document.querySelector('button.ytp-miniplayer-button')
    if ($miniplayerBtn && !document.getElementById('ytp-screenshot-button')) {
        const $btn = document.createElement('button')
        $btn.id = 'ytp-screenshot-button'
        $btn.classList.add('ytp-screenshot-button', 'ytp-button')
        $btn.dataset.priority = '5'
        $btn.dataset.tooltipTargetId = 'ytp-screenshot-button'
        $btn.dataset.titleNoTooltip = 'Screenshot'
        $btn.ariaLabel = 'Screenshot'
        $btn.title = 'Screenshot'
        $btn.innerHTML = escapeHTMLPolicy.createHTML(`<svg height="100%" version="1.1" viewBox="-300 -1260 1560 1560" width="100%">
            <use class="ytp-svg-shadow" xlink:href="#ytp-id-screenshot-svg"></use>
            <path
                d="M200-120q-33 0-56.5-23.5T120-200v-560q0-33 23.5-56.5T200-840h560q33 0 56.5 23.5T840-760v560q0 33-23.5 56.5T760-120H200Zm0-80h560v-560H200v560Zm40-80h480L570-480 450-320l-90-120-120 160Zm-40 80v-560 560Z"
                fill="#fff" id="ytp-id-screenshot-svg"></path>
        </svg>`)
        $btn.addEventListener('click', screenshot)

        insertBefore($btn, $miniplayerBtn)
    }

    requestAnimationFrame(screenBtnUpdate)
}
function insertBefore($element, $sibling) {
    $sibling.parentElement.insertBefore($element, $sibling)
}
function screenshot() {

    const $video = document.querySelector('#player video')
    if (!$video) {
        console.error('No video found to screenshot!')
        return
    }

    let wasPlaying = !$video.paused
    if (wasPlaying) $video.pause()

    const $canvas = document.createElement('canvas')
    $canvas.width = $video.videoWidth
    $canvas.height = $video.videoHeight

    let oldCss = $video.style.cssText
    $video.style.width = $video.videoWidth + 'px'
    $video.style.height = $video.videoHeight + 'px'

    const ctx = $canvas.getContext('2d')
    ctx.drawImage($video, 0, 0, $video.videoWidth, $video.videoHeight)

    $canvas.toBlob(blob => {

        if (directDownload) {
            const a = document.createElement('a')
            a.href = URL.createObjectURL(blob)
            a.download = `${getFileName()}.png`
            a.click()
        } else {
            const item = new ClipboardItem({ 'image/png': blob })
            navigator.clipboard.write([item])
        }

        $video.style.cssText = oldCss
        $canvas.remove()
        if (wasPlaying) $video.play()

    })

}
function getFileName() {
    const safeFileName = document.title.replace(/[\\/:*?"<>|]/g, '').replace(' - YouTube', '')
    return safeFileName
}
if (infiniteLool) {
    const observer = new MutationObserver(loopVideo)
    observer.observe(document.body, { childList: true, subtree: true })
}

requestAnimationFrame(screenBtnUpdate)
ThemeProgressbar()