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视频播放增强：1. 长按左键临时加速 2. B站自动开启AI字幕
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// ==UserScript==
// @name 视频控制增强
// @namespace http://tampermonkey.net/
// @version 1.0
// @description 视频播放增强：1. 长按左键临时加速 2. B站自动开启AI字幕
// @author Alonewinds
// @match *://*/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @run-at document-start
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// ================ 通用配置和工具函数 ================
const config = {
speedRate: GM_getValue('speedRate', 2.0),
minPressTime: 200,
selectors: {
'www.bilibili.com': '.bilibili-player-video-control-wrap, .squirtle-controller-wrap',
'www.youtube.com': '.ytp-chrome-bottom, .ytp-progress-bar',
'default': '.video-controls, .progress-bar, [role="slider"]'
}
};
// ================ 倍速控制功能 ================
let pressStartTime = 0;
let originalSpeed = 1.0;
let isPressed = false;
let activeVideo = null;
let isLongPress = false;
let preventNextClick = false;
// 注册倍速设置菜单
GM_registerMenuCommand('设置倍速值', () => {
const newSpeed = prompt('请输入新的倍速值（建议范围：1.1-4）:', config.speedRate);
if (newSpeed && !isNaN(newSpeed)) {
config.speedRate = parseFloat(newSpeed);
GM_setValue('speedRate', config.speedRate);
}
});
function findVideoElement(element) {
if (!element) return null;
if (element instanceof HTMLVideoElement) {
return element;
}
const domain = window.location.hostname;
const controlSelector = config.selectors[domain] || config.selectors.default;
if (element.closest(controlSelector)) {
return null;
}
if (domain === 'www.youtube.com') {
const ytPlayer = element.closest('.html5-video-player');
return ytPlayer ? ytPlayer.querySelector('video') : null;
}
const container = element.closest('*:has(video)');
const video = container?.querySelector('video');
return video && window.getComputedStyle(video).display !== 'none' ? video : null;
}
function setYouTubeSpeed(video, speed) {
if (window.location.hostname === 'www.youtube.com') {
const player = video.closest('.html5-video-player');
if (player) {
try {
video.playbackRate = speed;
const moviePlayer = player.querySelector('.video-stream');
if (moviePlayer) {
moviePlayer.playbackRate = speed;
}
video.dispatchEvent(new Event('ratechange'));
} catch (e) {
console.error('设置 YouTube 播放速度失败:', e);
}
}
} else {
video.playbackRate = speed;
}
}
// ================ B站字幕功能 ================
let subtitleEnabled = false;
let subtitleAttempts = 0;
let subtitleRetryTimer = null;
let manuallyDisabled = false;
let currentVideoId = '';
let clickHandler = null;
function getVideoId() {
const match = location.pathname.match(/\/video\/(.*?)\//);
return match ? match[1] : '';
}
function enableSubtitle() {
if (window.location.hostname !== 'www.bilibili.com') return;
if (subtitleAttempts >= 5 || manuallyDisabled) return;
subtitleAttempts++;
const button = document.querySelector("div.bpx-player-ctrl-btn.bpx-player-ctrl-subtitle > div.bpx-player-ctrl-btn-icon > span");
if (!button) {
subtitleRetryTimer = setTimeout(enableSubtitle, 1000);
return;
}
const parent = button.closest('.bpx-player-ctrl-subtitle');
if (!parent) return;
if (clickHandler) {
parent.removeEventListener('click', clickHandler);
}
clickHandler = (event) => {
requestAnimationFrame(() => {
if (!parent.classList.contains('bpx-player-ctrl-subtitle-on')) {
manuallyDisabled = true;
console.log('用户已手动关闭字幕，本视频将不再自动开启');
}
});
};
parent.addEventListener('click', clickHandler);
if (!parent.classList.contains('bpx-player-ctrl-subtitle-on') && !manuallyDisabled) {
button.click();
subtitleEnabled = true;
}
}
// ================ 事件处理 ================
function handleMouseDown(e) {
if (e.button !== 0) return;
const video = findVideoElement(e.target);
if (!video) return;
pressStartTime = Date.now();
activeVideo = video;
originalSpeed = window.location.hostname === 'www.youtube.com'
? (video.closest('.html5-video-player').querySelector('.video-stream')?.playbackRate || video.playbackRate)
: video.playbackRate;
isPressed = true;
isLongPress = false;
preventNextClick = false;
}
function handleMouseUp(e) {
if (!isPressed || !activeVideo) return;
const pressDuration = Date.now() - pressStartTime;
if (pressDuration >= config.minPressTime) {
preventNextClick = true;
setYouTubeSpeed(activeVideo, originalSpeed);
}
isPressed = false;
isLongPress = false;
activeVideo = null;
}
function handlePressDetection() {
if (!isPressed || !activeVideo) return;
const pressDuration = Date.now() - pressStartTime;
if (pressDuration >= config.minPressTime) {
if (activeVideo.playbackRate !== config.speedRate) {
setYouTubeSpeed(activeVideo, config.speedRate);
}
isLongPress = true;
}
}
function handleClick(e) {
if (preventNextClick) {
e.stopPropagation();
preventNextClick = false;
return;
}
}
function onVideoLoad() {
if (window.location.hostname !== 'www.bilibili.com') return;
const video = document.querySelector('video');
if (!video) {
setTimeout(onVideoLoad, 500);
return;
}
function reset() {
const newVideoId = getVideoId();
if (newVideoId !== currentVideoId) {
manuallyDisabled = false;
currentVideoId = newVideoId;
if (clickHandler) {
const oldButton = document.querySelector('.bpx-player-ctrl-subtitle');
if (oldButton) {
oldButton.removeEventListener('click', clickHandler);
}
clickHandler = null;
}
}
subtitleEnabled = false;
subtitleAttempts = 0;
if (subtitleRetryTimer) {
clearTimeout(subtitleRetryTimer);
subtitleRetryTimer = null;
}
if (!manuallyDisabled) {
setTimeout(enableSubtitle, 500);
}
}
video.addEventListener('loadeddata', reset);
video.addEventListener('play', () => {
if (!subtitleEnabled && !manuallyDisabled) {
reset();
}
});
reset();
}
// ================ 初始化 ================
function initializeEvents() {
// 倍速控制事件
document.addEventListener('mousedown', handleMouseDown, true);
document.addEventListener('mouseup', handleMouseUp, true);
document.addEventListener('click', handleClick, true);
document.addEventListener('mouseleave', handleMouseUp, true);
function checkPress() {
handlePressDetection();
requestAnimationFrame(checkPress);
}
checkPress();
// B站字幕功能初始化
if (window.location.hostname === 'www.bilibili.com') {
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', onVideoLoad);
} else {
onVideoLoad();
}
}
}
initializeEvents();
})();