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将YouTube上的沉浸式翻译中文字幕转换为语音播放，支持更改音色和根据视频倍速调整语音速度
当前为
// ==UserScript==
// @name YouTube字幕文本转语音TTS（适用于沉浸式翻译）
// @namespace http://tampermonkey.net/
// @version 1.8
// @description 将YouTube上的沉浸式翻译中文字幕转换为语音播放，支持更改音色和根据视频倍速调整语音速度
// @author Sean2333
// @match https://www.youtube.com/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
let lastCaptionText = '';
const synth = window.speechSynthesis;
let selectedVoice = null;
let pendingText = null; // 存储等待朗读的文本
let isWaitingToSpeak = false; // 是否正在等待朗读
function loadVoices() {
return new Promise(function(resolve) {
let voices = synth.getVoices();
if (voices.length !== 0) {
resolve(voices);
} else {
synth.onvoiceschanged = function() {
voices = synth.getVoices();
resolve(voices);
};
}
});
}
function selectVoice() {
loadVoices().then(function(voices) {
selectedVoice = voices.find(voice => voice.name === 'Microsoft Xiaoxiao Online (Natural) - Chinese (Mainland)');
if (!selectedVoice) {
selectedVoice = voices.find(voice => voice.lang === 'zh-CN');
}
console.log('已选择的语音：', selectedVoice ? selectedVoice.name : '未找到合适的语音');
});
}
function speakText(text, isNewCaption = false) {
const video = document.querySelector('video');
// 如果有新字幕出现且当前正在朗读
if (isNewCaption && synth.speaking) {
console.log('新字幕出现，但当前语音未完成');
pendingText = text; // 保存新字幕文本
if (video && !video.paused) {
video.pause(); // 暂停视频
isWaitingToSpeak = true;
console.log('视频已暂停，等待当前语音完成');
}
return;
}
console.log('准备朗读文本：', text);
if (synth.speaking) {
console.log('正在停止当前语音播放');
synth.cancel();
}
if (text) {
const utterance = new SpeechSynthesisUtterance(text);
utterance.lang = 'zh-CN';
if (selectedVoice) {
utterance.voice = selectedVoice;
}
if (video) {
utterance.rate = video.playbackRate;
console.log('设置语音速率为：', utterance.rate);
} else {
utterance.rate = 1;
}
// 语音结束时的处理
utterance.onend = () => {
console.log('当前语音播放完成');
// 如果有等待的文本，播放它
if (pendingText) {
console.log('播放等待的文本');
const nextText = pendingText;
pendingText = null;
speakText(nextText);
}
// 如果视频是因为等待语音而暂停的，则恢复播放
else if (isWaitingToSpeak && video && video.paused) {
isWaitingToSpeak = false;
video.play();
console.log('所有语音播放完成，视频继续播放');
}
};
// 语音出错时的处理
utterance.onerror = () => {
console.error('语音播放出错');
if (isWaitingToSpeak && video && video.paused) {
isWaitingToSpeak = false;
video.play();
console.log('语音播放出错，视频继续播放');
}
pendingText = null; // 清除等待的文本
};
synth.speak(utterance);
console.log('开始朗读');
} else {
console.log('文本为空，跳过朗读');
}
}
function getCaptionText() {
const immersiveCaptionWindow = document.querySelector('#immersive-translate-caption-window');
if (immersiveCaptionWindow && immersiveCaptionWindow.shadowRoot) {
const captionContainer = immersiveCaptionWindow.shadowRoot.querySelector('div > div > div');
if (captionContainer) {
const targetCaptions = captionContainer.querySelectorAll('.target-cue');
let captionText = '';
targetCaptions.forEach(span => {
captionText += span.textContent + ' ';
});
captionText = captionText.trim();
return captionText;
}
}
return '';
}
function setupCaptionObserver() {
function waitForCaptionContainer() {
const immersiveCaptionWindow = document.querySelector('#immersive-translate-caption-window');
if (immersiveCaptionWindow && immersiveCaptionWindow.shadowRoot) {
const captionContainer = immersiveCaptionWindow.shadowRoot.querySelector('div > div > div');
if (captionContainer) {
console.log('找到字幕容器，开始监听变化');
const observer = new MutationObserver((mutations) => {
if (mutations.some(mutation => mutation.type === 'childList')) {
const currentText = getCaptionText();
if (currentText && currentText !== lastCaptionText) {
lastCaptionText = currentText;
speakText(currentText, true); // 标记这是新字幕
}
}
});
const config = {
childList: true,
subtree: true
};
observer.observe(captionContainer, config);
const initialText = getCaptionText();
if (initialText) {
lastCaptionText = initialText;
speakText(initialText, true);
}
} else {
setTimeout(waitForCaptionContainer, 1000);
}
} else {
setTimeout(waitForCaptionContainer, 1000);
}
}
waitForCaptionContainer();
}
window.addEventListener('load', function() {
console.log('脚本已启动，等待视频播放');
selectVoice();
setupCaptionObserver();
});
})();