长按右方向键倍速播放，松开恢复原速，按 + 键增加倍速，按 - 键减少倍速，单击右方向键快进5秒。 按 ] 键从 1.5 倍速开始，每按一次增加 0.5 倍速，按 [ 键每次减少 0.5 倍速，按P键恢复1.0倍速。适配大部分网页播放器，尤其适配jellyfin等播放器播放nas内容。
// ==UserScript==
// @name 视频倍速播放
// @namespace http://tampermonkey.net/
// @version 1.3.3
// @description 长按右方向键倍速播放，松开恢复原速，按 + 键增加倍速，按 - 键减少倍速，单击右方向键快进5秒。 按 ] 键从 1.5 倍速开始，每按一次增加 0.5 倍速，按 [ 键每次减少 0.5 倍速，按P键恢复1.0倍速。适配大部分网页播放器，尤其适配jellyfin等播放器播放nas内容。
// @license MIT
// @author diyun
// @include http://*/*
// @include https://*/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=greasyfork.org
// @grant none
// ==/UserScript==
(function () {
"use strict";
let currentUrl = location.href;
let keydownListener = null;
let keyupListener = null;
let urlObserver = null;
let videoObserver = null; // 添加此行
let videoChangeObserver = null;
let activeObservers = new Set();
// 完整的清理函数
function cleanup() {
// 清理所有事件监听器
if (keydownListener) {
document.removeEventListener("keydown", keydownListener, true);
keydownListener = null;
}
if (keyupListener) {
document.removeEventListener("keyup", keyupListener, true);
keyupListener = null;
}
// 清理所有观察器
activeObservers.forEach((observer) => {
if (observer && observer.disconnect) {
observer.disconnect();
}
});
activeObservers.clear();
videoObserver = null;
urlObserver = null;
videoChangeObserver = null;
}
// 等待视频元素加载
function waitForVideoElement() {
return new Promise((resolve, reject) => {
const maxAttempts = 10;
let attempts = 0;
const checkVideo = () => {
const video = document.querySelector("video");
if (video && video.readyState >= 1) {
return video;
}
return null;
};
// 立即检查
const video = checkVideo();
if (video) {
resolve(video);
return;
}
// 创建观察器
const observer = new MutationObserver(() => {
attempts++;
const video = checkVideo();
if (video) {
observer.disconnect();
resolve(video);
} else if (attempts >= maxAttempts) {
observer.disconnect();
console.warn("未找到视频元素，脚本已停止运行");
reject({ type: "no_video" }); // 使用对象替代 Error
}
});
observer.observe(document.body, {
childList: true,
subtree: true,
});
activeObservers.add(observer);
// 设置超时
setTimeout(() => {
observer.disconnect();
activeObservers.delete(observer);
console.warn("等待视频元素超时，脚本已停止运行");
reject({ type: "timeout" }); // 使用对象替代 Error
}, 10000);
});
}
// 显示浮动提示
function showFloatingMessage(message) {
// 添加样式
const style = document.createElement('style');
style.textContent = `
.floating-message {
position: fixed;
top: 10%;
left: 50%;
transform: translateX(-50%);
background: rgba(0, 0, 0, 0.8);
color: white;
padding: 8px 16px;
border-radius: 4px;
z-index: 2147483647;
pointer-events: none;
font-size: 1.1em;
text-align: center;
box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
transition: opacity 0.3s ease;
}
`;
document.head.appendChild(style);
// 清除已存在的提示
const existingMessages = document.querySelectorAll('.floating-message');
existingMessages.forEach(el => el.remove());
// 创建并显示新提示
const messageEl = document.createElement('div');
messageEl.className = 'floating-message';
messageEl.textContent = message;
// 获取全屏元素或回退到body
const fullscreenElement = document.fullscreenElement ||
document.webkitFullscreenElement ||
document.mozFullScreenElement ||
document.msFullscreenElement;
const targetContainer = fullscreenElement || document.body;
targetContainer.appendChild(messageEl);
// 2秒后自动移除
setTimeout(() => {
if (messageEl.parentElement) {
messageEl.remove();
}
}, 2000);
}
// 初始化脚本
async function init() {
cleanup();
try {
const video = await waitForVideoElement();
console.log("找到视频元素：", video);
const key = "ArrowRight"; // 监听的按键
const increaseKey = "Equal"; // + 键
const decreaseKey = "Minus"; // - 键
const quickIncreaseKey = "BracketRight"; // 】键
const quickDecreaseKey = "BracketLeft"; // 【键
const resetSpeedKey = "KeyP"; // P键
let targetRate = 2; // 目标倍速
let currentQuickRate = 1.0; // 当前快速倍速
let keyDownTime = 0; // 添加按键开始时间记录
let originalRate = video.playbackRate; // 保存原始播放速度
let isSpeedUp = false; // 添加一个标记来跟踪是否处于加速状态
// 监听视频元素变化
if (video.parentElement) {
videoChangeObserver = new MutationObserver((mutations) => {
const hasVideoChanges = mutations.some(
(mutation) =>
Array.from(mutation.removedNodes).some(
(node) => node.tagName === "VIDEO"
) ||
Array.from(mutation.addedNodes).some(
(node) => node.tagName === "VIDEO"
)
);
if (hasVideoChanges) {
console.log("视频元素变化，重新初始化");
cleanup();
init().catch(console.error);
}
});
videoChangeObserver.observe(video.parentElement, {
childList: true,
subtree: true,
});
activeObservers.add(videoChangeObserver);
}
// 创建新的事件监听器
keydownListener = (e) => {
if (e.code === key) {
e.preventDefault();
e.stopImmediatePropagation();
// 记录按下时间
if (!keyDownTime) {
keyDownTime = Date.now();
}
// 如果按下超过300ms，认为是长按，进入加速模式
if (!isSpeedUp && Date.now() - keyDownTime > 300) {
isSpeedUp = true;
originalRate = video.playbackRate;
video.playbackRate = targetRate;
showFloatingMessage(`开始 ${targetRate} 倍速播放`);
}
}
// 按】键增加当前播放倍速
if (e.code === quickIncreaseKey) {
e.preventDefault();
e.stopImmediatePropagation();
if (currentQuickRate === 1.0) {
currentQuickRate = 1.5;
} else {
currentQuickRate += 0.5;
}
video.playbackRate = currentQuickRate;
showFloatingMessage(`当前播放速度：${currentQuickRate}x`);
}
// 按【键减少当前播放倍速
if (e.code === quickDecreaseKey) {
e.preventDefault();
e.stopImmediatePropagation();
if (currentQuickRate > 0.5) {
currentQuickRate -= 0.5;
video.playbackRate = currentQuickRate;
showFloatingMessage(`当前播放速度：${currentQuickRate}x`);
}
}
// 按P键恢复1.0倍速
if (e.code === resetSpeedKey || e.key.toLowerCase() === "p") {
e.preventDefault();
e.stopImmediatePropagation();
currentQuickRate = 1.0;
video.playbackRate = 1.0;
showFloatingMessage("恢复正常播放速度");
}
// 按 + 键：增加 targetRate 的值
if (e.code === increaseKey) {
e.preventDefault();
e.stopImmediatePropagation();
targetRate += 0.5;
showFloatingMessage(`下次倍速：${targetRate}`);
}
// 按 - 键：减少 targetRate 的值
if (e.code === decreaseKey) {
e.preventDefault();
e.stopImmediatePropagation();
if (targetRate > 0.5) {
targetRate -= 0.5;
showFloatingMessage(`下次倍速：${targetRate}`);
} else {
showFloatingMessage("倍速已达到最小值 0.5");
}
}
};
keyupListener = (e) => {
if (e.code === key) {
e.preventDefault();
e.stopImmediatePropagation();
const pressTime = Date.now() - keyDownTime;
// 如果按下时间小于300ms，认为是点击，快进5秒
if (pressTime < 300) {
video.currentTime += 5;
}
// 如果处于加速状态，恢复原速
if (isSpeedUp) {
video.playbackRate = originalRate;
showFloatingMessage(`恢复 ${originalRate} 倍速播放`);
isSpeedUp = false;
}
// 重置状态
keyDownTime = 0;
}
};
// 绑定事件监听器
document.addEventListener("keydown", keydownListener, true);
document.addEventListener("keyup", keyupListener, true);
return true;
} catch (error) {
console.error("初始化失败:", error);
return false;
}
}
// 监听 URL 变化
function watchUrlChange() {
urlObserver = new MutationObserver(() => {
if (location.href !== currentUrl) {
currentUrl = location.href;
console.log("URL变化，重新初始化");
cleanup();
setTimeout(() => init().catch(console.error), 1000);
}
});
urlObserver.observe(document.body, {
childList: true,
subtree: true,
});
activeObservers.add(urlObserver);
// 增强的 History API 监听
const handleStateChange = () => {
if (location.href !== currentUrl) {
currentUrl = location.href;
cleanup();
setTimeout(() => init().catch(console.error), 1000);
}
};
const originalPushState = history.pushState;
const originalReplaceState = history.replaceState;
history.pushState = function () {
originalPushState.apply(this, arguments);
handleStateChange();
};
history.replaceState = function () {
originalReplaceState.apply(this, arguments);
handleStateChange();
};
window.addEventListener("popstate", handleStateChange);
}
// 启动脚本
const startScript = async () => {
let retryCount = 0;
const maxRetries = 3;
const tryInit = async () => {
try {
const success = await init();
if (success) {
watchUrlChange();
} else if (retryCount < maxRetries) {
retryCount++;
console.warn(`初始化重试 (${retryCount}/${maxRetries})`); // 改为警告
setTimeout(tryInit, 2000);
}
} catch (error) {
// 检查错误类型
if (error && (error.type === "no_video" || error.type === "timeout")) {
return; // 直接返回，不做额外处理
}
console.warn("启动失败:", error);
if (retryCount < maxRetries) {
retryCount++;
setTimeout(tryInit, 2000);
}
}
};
tryInit();
};
startScript();
})();