Hold right arrow key to speed up YouTube video to 2.5x, without interfering with the forward function
// ==UserScript==
// @name YouTube Speed Control
// @name:zh-CN YouTube 按键加速播放
// @namespace https://github.com/landrarwolf/youtube-speed-control
// @version 0.12
// @description Hold right arrow key to speed up YouTube video to 2.5x, without interfering with the forward function
// @description:zh-CN 在YouTube上按住右箭头键时视频加速到2.5倍速，避免与快进功能冲突
// @icon https://img.icons8.com/?size=100&id=9991&format=png&color=000000
// @author landrarwolf
// @match https://www.youtube.com/*
// @license MIT
// @supportURL https://github.com/landrarwolf/youtube-speed-control/issues
// @homepageURL https://github.com/landrarwolf/youtube-speed-control
// @grant none
// ==/UserScript==
// abc test 2222
// 用户可配置选项
const config = {
speedMultiplier: 2.5, // 加速倍数
keyPressDelay: 200, // 按键延迟时间（毫秒）
darkTheme: {
background: 'rgba(33, 33, 33, 0.9)',
text: '#ffffff',
shadow: '0 2px 4px rgba(0, 0, 0, 0.2)'
},
lightTheme: {
background: 'rgba(255, 255, 255, 0.9)',
text: '#000000',
shadow: '0 2px 4px rgba(0, 0, 0, 0.1)'
}
};
// 在文件开头添加语言配置
const i18n = {
en: {
speedIndicator: `⚡ ${config.speedMultiplier}x Speed`
},
zh: {
speedIndicator: `⚡ ${config.speedMultiplier}x 加速中`
}
};
// 在文件开头添加
const darkModeMediaQuery = window.matchMedia('(prefers-color-scheme: dark)');
// 获取当前语言
function getCurrentLanguage() {
const lang = navigator.language.toLowerCase().split('-')[0];
return lang in i18n ? lang : 'en';
}
(function () {
'use strict';
let normalSpeed = 1.0; // 保存正常播放速度
let speedTimeout = null; // 用于延迟处理速度变化
let isSpeedUp = false; // 标记是否处于加速状态
let pressStartTime = 0; // 记录按键开始时间
let speedIndicator = null; // 速度提示元素
// 事件监听器引用，用于清理
let themeChangeListener = null;
let fullscreenChangeListener = null;
// 获取视频元素的辅助函数，带错误处理
function getVideoElement() {
try {
const video = document.querySelector('video');
if (!video) {
console.warn('未找到视频元素');
return null;
}
return video;
} catch (error) {
console.error('获取视频元素时出错:', error);
return null;
}
}
// 创建速度提示元素
function createSpeedIndicator() {
try {
const indicator = document.createElement('div');
// 基础样式
const baseStyles = `
position: fixed;
top: 20px;
left: 50%;
transform: translateX(-50%);
padding: 8px 16px;
border-radius: 8px;
z-index: 2147483647;
font-size: 14px;
font-weight: 500;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
display: none;
opacity: 0;
transition: all 0.2s ease;
backdrop-filter: blur(8px);
-webkit-backdrop-filter: blur(8px);
`;
// 创建样式更新函数
const updateTheme = () => {
try {
const isDarkMode = darkModeMediaQuery.matches;
const theme = isDarkMode ? config.darkTheme : config.lightTheme;
indicator.style.cssText = `
${baseStyles}
background: ${theme.background};
color: ${theme.text};
box-shadow: ${theme.shadow};
`;
} catch (error) {
console.error('更新主题样式时出错:', error);
}
};
// 初始化样式
updateTheme();
// 只有在首次创建时才添加主题变化监听器
if (!themeChangeListener) {
themeChangeListener = updateTheme;
darkModeMediaQuery.addEventListener('change', themeChangeListener);
}
// 使用当前语言的文本
indicator.textContent = i18n[getCurrentLanguage()].speedIndicator;
// 将指示器添加到合适的容器中
const container = document.fullscreenElement || document.body;
container.appendChild(indicator);
// 只有在首次创建时才添加全屏变化监听器
if (!fullscreenChangeListener) {
fullscreenChangeListener = () => {
try {
if (speedIndicator) {
const newContainer = document.fullscreenElement || document.body;
if (speedIndicator.parentElement !== newContainer) {
speedIndicator.remove();
newContainer.appendChild(speedIndicator);
}
}
} catch (error) {
console.error('处理全屏变化时出错:', error);
}
};
document.addEventListener('fullscreenchange', fullscreenChangeListener);
}
return indicator;
} catch (error) {
console.error('创建速度提示元素时出错:', error);
return null;
}
}
// 显示速度提示
function showSpeedIndicator() {
try {
if (!speedIndicator) {
speedIndicator = createSpeedIndicator();
}
speedIndicator.style.display = 'block';
requestAnimationFrame(() => {
speedIndicator.style.opacity = '1';
speedIndicator.style.transform = 'translateX(-50%) translateY(0)';
});
} catch (error) {
console.error('显示速度提示时出错:', error);
}
}
// 隐藏速度提示
function hideSpeedIndicator() {
try {
if (speedIndicator) {
speedIndicator.style.opacity = '0';
speedIndicator.style.transform = 'translateX(-50%) translateY(-10px)';
setTimeout(() => {
if (speedIndicator) {
speedIndicator.style.display = 'none';
}
}, 200);
}
} catch (error) {
console.error('隐藏速度提示时出错:', error);
}
}
// 监听键盘按下事件
document.addEventListener('keydown', function (event) {
if (event.key === 'ArrowRight') {
// 立即阻止事件传播，防止触发 YouTube 的快进功能
event.preventDefault();
event.stopPropagation();
if (!event.repeat) {
pressStartTime = Date.now();
// 清除之前的定时器以避免竞态条件
if (speedTimeout) {
clearTimeout(speedTimeout);
speedTimeout = null;
}
speedTimeout = setTimeout(() => {
try {
const video = getVideoElement();
if (video) {
normalSpeed = video.playbackRate;
video.playbackRate = config.speedMultiplier;
isSpeedUp = true;
showSpeedIndicator();
}
} catch (error) {
console.error('设置视频加速时出错:', error);
}
}, config.keyPressDelay);
}
}
}, true);
// 监听键盘释放事件
document.addEventListener('keyup', function (event) {
if (event.key === 'ArrowRight') {
try {
const pressDuration = Date.now() - pressStartTime;
if (speedTimeout) {
clearTimeout(speedTimeout);
speedTimeout = null;
}
// 如果按键时间小于延迟时间，模拟一次快进操作
if (pressDuration < config.keyPressDelay) {
const video = getVideoElement();
if (video) {
video.currentTime += 5; // 手动触发5秒快进
}
}
if (isSpeedUp) {
const video = getVideoElement();
if (video) {
video.playbackRate = normalSpeed;
isSpeedUp = false;
hideSpeedIndicator();
}
}
} catch (error) {
console.error('处理按键释放时出错:', error);
}
}
}, true);
// 在 IIFE 内部添加
const cleanup = () => {
try {
// 清理速度提示元素
if (speedIndicator && speedIndicator.parentNode) {
speedIndicator.parentNode.removeChild(speedIndicator);
speedIndicator = null;
}
// 清理定时器
if (speedTimeout) {
clearTimeout(speedTimeout);
speedTimeout = null;
}
// 清理事件监听器
if (themeChangeListener && darkModeMediaQuery) {
darkModeMediaQuery.removeEventListener('change', themeChangeListener);
themeChangeListener = null;
}
if (fullscreenChangeListener) {
document.removeEventListener('fullscreenchange', fullscreenChangeListener);
fullscreenChangeListener = null;
}
// 重置状态
isSpeedUp = false;
normalSpeed = 1.0;
} catch (error) {
console.error('清理资源时出错:', error);
}
};
// 添加清理监听
if (typeof window.onbeforeunload === 'function') {
const originalUnload = window.onbeforeunload;
window.onbeforeunload = function () {
cleanup();
return originalUnload.apply(this, arguments);
};
} else {
window.onbeforeunload = cleanup;
}
})();
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