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// ==UserScript==
// @name YouTube Enhancer (Subtitle Downloader)
// @description Download Subtitles in Various Languages.
// @icon https://raw.githubusercontent.com/exyezed/youtube-enhancer/refs/heads/main/extras/youtube-enhancer.png
// @version 1.2
// @author exyezed
// @namespace https://github.com/exyezed/youtube-enhancer/
// @supportURL https://github.com/exyezed/youtube-enhancer/issues
// @license MIT
// @match https://www.youtube.com/*
// @match https://youtube.com/*
// @grant GM_xmlhttpRequest
// @grant GM_download
// @connect downsub.vercel.app
// @connect download.subtitle.to
// @run-at document-idle
// ==/UserScript==
(function() {
'use strict';
function createSVGIcon(className, isHover = false) {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
svg.setAttribute("viewBox", "0 0 576 512");
svg.classList.add(className);
path.setAttribute("d", isHover
? "M64 32C28.7 32 0 60.7 0 96L0 416c0 35.3 28.7 64 64 64l448 0c35.3 0 64-28.7 64-64l0-320c0-35.3-28.7-64-64-64L64 32zm56 208l176 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-176 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zm256 0l80 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-80 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zM120 336l80 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-80 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zm160 0l176 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-176 0c-13.3 0-24-10.7-24-24s10.7-24 24-24z"
: "M64 80c-8.8 0-16 7.2-16 16l0 320c0 8.8 7.2 16 16 16l448 0c8.8 0 16-7.2 16-16l0-320c0-8.8-7.2-16-16-16L64 80zM0 96C0 60.7 28.7 32 64 32l448 0c35.3 0 64 28.7 64 64l0 320c0 35.3-28.7 64-64 64L64 480c-35.3 0-64-28.7-64-64L0 96zM120 240l176 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-176 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zm256 0l80 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-80 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zM120 336l80 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-80 0c-13.3 0-24-10.7-24-24s10.7-24 24-24zm160 0l176 0c13.3 0 24 10.7 24 24s-10.7 24-24 24l-176 0c-13.3 0-24-10.7-24-24s10.7-24 24-24z"
);
svg.appendChild(path);
return svg;
}
function createSearchIcon() {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
svg.setAttribute("viewBox", "0 0 24 24");
svg.setAttribute("width", "16");
svg.setAttribute("height", "16");
path.setAttribute("d", "M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z");
svg.appendChild(path);
return svg;
}
function createCheckIcon() {
const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
svg.setAttribute("viewBox", "0 0 24 24");
svg.classList.add("check-icon");
path.setAttribute("d", "M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z");
svg.appendChild(path);
return svg;
}
function getVideoId() {
const urlParams = new URLSearchParams(window.location.search);
return urlParams.get('v');
}
function createTableElement(tag, text = null) {
const element = document.createElement(tag);
if (text !== null) {
element.textContent = text;
}
return element;
}
function downloadSubtitle(url, filename, format, buttonElement) {
try {
const buttonHeight = buttonElement.offsetHeight;
const buttonWidth = buttonElement.offsetWidth;
const originalChildren = Array.from(buttonElement.childNodes).map(node => node.cloneNode(true));
while (buttonElement.firstChild) {
buttonElement.removeChild(buttonElement.firstChild);
}
buttonElement.style.height = `${buttonHeight}px`;
buttonElement.style.width = `${buttonWidth}px`;
const spinner = document.createElement('div');
spinner.className = 'button-spinner';
buttonElement.appendChild(spinner);
buttonElement.disabled = true;
GM_download({
url: url,
name: filename,
onload: function() {
while (buttonElement.firstChild) {
buttonElement.removeChild(buttonElement.firstChild);
}
buttonElement.appendChild(createCheckIcon());
buttonElement.classList.add('download-success');
setTimeout(() => {
while (buttonElement.firstChild) {
buttonElement.removeChild(buttonElement.firstChild);
}
originalChildren.forEach(child => {
buttonElement.appendChild(child.cloneNode(true));
});
buttonElement.disabled = false;
buttonElement.classList.remove('download-success');
buttonElement.style.height = '';
buttonElement.style.width = '';
}, 1500);
},
onerror: function(error) {
console.error('Download error:', error);
while (buttonElement.firstChild) {
buttonElement.removeChild(buttonElement.firstChild);
}
originalChildren.forEach(child => {
buttonElement.appendChild(child.cloneNode(true));
});
buttonElement.disabled = false;
buttonElement.style.height = '';
buttonElement.style.width = '';
}
});
} catch (error) {
console.error('Download setup error:', error);
while (buttonElement.firstChild) {
buttonElement.removeChild(buttonElement.firstChild);
}
buttonElement.textContent = format;
buttonElement.disabled = false;
buttonElement.style.height = '';
buttonElement.style.width = '';
}
}
function filterSubtitles(subtitles, query) {
if (!query) return subtitles;
const lowerQuery = query.toLowerCase();
return subtitles.filter(sub =>
sub.name.toLowerCase().includes(lowerQuery)
);
}
function createSubtitleTable(subtitles, autoTransSubs, videoTitle) {
const container = document.createElement('div');
container.className = 'subtitle-container';
const titleDiv = document.createElement('div');
titleDiv.className = 'subtitle-dropdown-title';
titleDiv.textContent = `Download Subtitles (${subtitles.length + autoTransSubs.length})`;
container.appendChild(titleDiv);
const searchContainer = document.createElement('div');
searchContainer.className = 'subtitle-search-container';
const searchInput = document.createElement('input');
searchInput.type = 'text';
searchInput.className = 'subtitle-search-input';
searchInput.placeholder = 'Search languages...';
const searchIcon = document.createElement('div');
searchIcon.className = 'subtitle-search-icon';
searchIcon.appendChild(createSearchIcon());
searchContainer.appendChild(searchIcon);
searchContainer.appendChild(searchInput);
container.appendChild(searchContainer);
const tabsDiv = document.createElement('div');
tabsDiv.className = 'subtitle-tabs';
const regularTab = document.createElement('div');
regularTab.className = 'subtitle-tab active';
regularTab.textContent = 'Original';
regularTab.dataset.tab = 'regular';
const autoTab = document.createElement('div');
autoTab.className = 'subtitle-tab';
autoTab.textContent = 'Auto Translate';
autoTab.dataset.tab = 'auto';
tabsDiv.appendChild(regularTab);
tabsDiv.appendChild(autoTab);
container.appendChild(tabsDiv);
const itemsPerPage = 30;
const regularContent = createSubtitleContent(subtitles, videoTitle, true, itemsPerPage);
regularContent.className = 'subtitle-content regular-content active';
const autoContent = createSubtitleContent(autoTransSubs, videoTitle, false, itemsPerPage);
autoContent.className = 'subtitle-content auto-content';
container.appendChild(regularContent);
container.appendChild(autoContent);
tabsDiv.addEventListener('click', (e) => {
if (e.target.classList.contains('subtitle-tab')) {
document.querySelectorAll('.subtitle-tab').forEach(tab => tab.classList.remove('active'));
document.querySelectorAll('.subtitle-content').forEach(content => content.classList.remove('active'));
e.target.classList.add('active');
const tabType = e.target.dataset.tab;
document.querySelector(`.${tabType}-content`).classList.add('active');
searchInput.value = '';
const activeContent = document.querySelector(`.${tabType}-content`);
const grid = activeContent.querySelector('.subtitle-grid');
if (tabType === 'regular') {
renderPage(1, subtitles, grid, itemsPerPage, videoTitle);
} else {
renderPage(1, autoTransSubs, grid, itemsPerPage, videoTitle);
}
const pagination = activeContent.querySelector('.subtitle-pagination');
updatePagination(
1,
Math.ceil((tabType === 'regular' ? subtitles : autoTransSubs).length / itemsPerPage),
pagination,
null,
grid,
tabType === 'regular' ? subtitles : autoTransSubs,
itemsPerPage,
videoTitle
);
}
});
searchInput.addEventListener('input', (e) => {
const query = e.target.value.trim();
const activeTab = document.querySelector('.subtitle-tab.active').dataset.tab;
const activeContent = document.querySelector(`.${activeTab}-content`);
const grid = activeContent.querySelector('.subtitle-grid');
const pagination = activeContent.querySelector('.subtitle-pagination');
const sourceSubtitles = activeTab === 'regular' ? subtitles : autoTransSubs;
const filteredSubtitles = filterSubtitles(sourceSubtitles, query);
renderPage(1, filteredSubtitles, grid, itemsPerPage, videoTitle);
updatePagination(
1,
Math.ceil(filteredSubtitles.length / itemsPerPage),
pagination,
filteredSubtitles,
grid,
sourceSubtitles,
itemsPerPage,
videoTitle
);
grid.dataset.filteredCount = filteredSubtitles.length;
grid.dataset.query = query;
});
return container;
}
function renderPage(page, subtitlesList, gridElement, itemsPerPage, videoTitle) {
while (gridElement.firstChild) {
gridElement.removeChild(gridElement.firstChild);
}
const startIndex = (page - 1) * itemsPerPage;
const endIndex = Math.min(startIndex + itemsPerPage, subtitlesList.length);
for (let i = startIndex; i < endIndex; i++) {
const sub = subtitlesList[i];
const item = document.createElement('div');
item.className = 'subtitle-item';
const langLabel = document.createElement('div');
langLabel.className = 'subtitle-language';
langLabel.textContent = sub.name;
item.appendChild(langLabel);
const btnContainer = document.createElement('div');
btnContainer.className = 'subtitle-format-container';
const srtBtn = document.createElement('button');
srtBtn.textContent = 'SRT';
srtBtn.className = 'subtitle-format-btn srt-btn';
srtBtn.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
downloadSubtitle(sub.download.srt, `${videoTitle} - ${sub.name}.srt`, 'SRT', srtBtn);
});
btnContainer.appendChild(srtBtn);
const txtBtn = document.createElement('button');
txtBtn.textContent = 'TXT';
txtBtn.className = 'subtitle-format-btn txt-btn';
txtBtn.addEventListener('click', (e) => {
e.preventDefault();
e.stopPropagation();
downloadSubtitle(sub.download.txt, `${videoTitle} - ${sub.name}.txt`, 'TXT', txtBtn);
});
btnContainer.appendChild(txtBtn);
item.appendChild(btnContainer);
gridElement.appendChild(item);
}
}
function updatePagination(page, totalPages, paginationElement, filteredSubs, gridElement, sourceSubtitles, itemsPerPage, videoTitle) {
while (paginationElement.firstChild) {
paginationElement.removeChild(paginationElement.firstChild);
}
if (totalPages <= 1) return;
const prevBtn = document.createElement('button');
prevBtn.textContent = '«';
prevBtn.className = 'pagination-btn';
prevBtn.disabled = page === 1;
prevBtn.addEventListener('click', (e) => {
e.stopPropagation();
if (page > 1) {
const newPage = page - 1;
const query = gridElement.dataset.query;
const subsToUse = query && filteredSubs ? filteredSubs : sourceSubtitles;
renderPage(newPage, subsToUse, gridElement, itemsPerPage, videoTitle);
updatePagination(
newPage,
totalPages,
paginationElement,
filteredSubs,
gridElement,
sourceSubtitles,
itemsPerPage,
videoTitle
);
}
});
paginationElement.appendChild(prevBtn);
const pageIndicator = document.createElement('span');
pageIndicator.className = 'page-indicator';
pageIndicator.textContent = `${page} / ${totalPages}`;
paginationElement.appendChild(pageIndicator);
const nextBtn = document.createElement('button');
nextBtn.textContent = '»';
nextBtn.className = 'pagination-btn';
nextBtn.disabled = page === totalPages;
nextBtn.addEventListener('click', (e) => {
e.stopPropagation();
if (page < totalPages) {
const newPage = page + 1;
const query = gridElement.dataset.query;
const subsToUse = query && filteredSubs ? filteredSubs : sourceSubtitles;
renderPage(newPage, subsToUse, gridElement, itemsPerPage, videoTitle);
updatePagination(
newPage,
totalPages,
paginationElement,
filteredSubs,
gridElement,
sourceSubtitles,
itemsPerPage,
videoTitle
);
}
});
paginationElement.appendChild(nextBtn);
}
function createSubtitleContent(subtitles, videoTitle, isOriginal, itemsPerPage) {
const content = document.createElement('div');
let currentPage = 1;
const grid = document.createElement('div');
grid.className = 'subtitle-grid';
if (isOriginal && subtitles.length <= 6) {
grid.classList.add('center-grid');
}
grid.dataset.filteredCount = subtitles.length;
grid.dataset.query = '';
const pagination = document.createElement('div');
pagination.className = 'subtitle-pagination';
renderPage(currentPage, subtitles, grid, itemsPerPage, videoTitle);
updatePagination(
currentPage,
Math.ceil(subtitles.length / itemsPerPage),
pagination,
null,
grid,
subtitles,
itemsPerPage,
videoTitle
);
content.appendChild(grid);
content.appendChild(pagination);
return content;
}
async function handleSubtitleDownload(e) {
e.preventDefault();
const videoId = getVideoId();
if (!videoId) {
console.error('Video ID not found');
return;
}
const backdrop = document.createElement('div');
backdrop.className = 'subtitle-backdrop';
document.body.appendChild(backdrop);
const loader = document.createElement('div');
loader.className = 'subtitle-loader';
backdrop.appendChild(loader);
try {
const response = await new Promise((resolve, reject) => {
GM_xmlhttpRequest({
method: 'GET',
url: `https://downsub.vercel.app/${videoId}`,
headers: {
'Accept': 'application/json'
},
responseType: 'json',
onload: function(response) {
if (response.status >= 200 && response.status < 300) {
resolve(response.response);
} else {
reject(new Error(`Request failed with status ${response.status}`));
}
},
onerror: function(error) {
reject(new Error('Network error'));
}
});
});
const videoTitleElement = document.querySelector('yt-formatted-string.style-scope.ytd-watch-metadata');
const videoTitle = videoTitleElement ? videoTitleElement.textContent.trim() : `youtube_video_${videoId}`;
loader.remove();
if (!response.subtitles || response.subtitles.length === 0 &&
(!response.subtitlesAutoTrans || response.subtitlesAutoTrans.length === 0)) {
while (backdrop.firstChild) {
backdrop.removeChild(backdrop.firstChild);
}
const errorDiv = document.createElement('div');
errorDiv.className = 'subtitle-error';
errorDiv.textContent = 'No subtitles available for this video';
backdrop.appendChild(errorDiv);
setTimeout(() => {
backdrop.remove();
}, 2000);
return;
}
const subtitleTable = createSubtitleTable(
response.subtitles || [],
response.subtitlesAutoTrans || [],
videoTitle
);
backdrop.appendChild(subtitleTable);
backdrop.addEventListener('click', (e) => {
if (!subtitleTable.contains(e.target)) {
subtitleTable.remove();
backdrop.remove();
}
});
subtitleTable.addEventListener('click', (e) => {
e.stopPropagation();
});
} catch (error) {
console.error('Error fetching subtitles:', error);
while (backdrop.firstChild) {
backdrop.removeChild(backdrop.firstChild);
}
const errorDiv = document.createElement('div');
errorDiv.className = 'subtitle-error';
errorDiv.textContent = 'Error fetching subtitles. Please try again.';
backdrop.appendChild(errorDiv);
setTimeout(() => {
backdrop.remove();
}, 2000);
}
}
function initializeStyles(computedStyle) {
if (document.querySelector('#yt-subtitle-downloader-styles')) return;
const style = document.createElement('style');
style.id = 'yt-subtitle-downloader-styles';
style.textContent = `
.custom-subtitle-btn {
background: none;
border: none;
cursor: pointer;
padding: 0;
width: ${computedStyle.width};
height: ${computedStyle.height};
display: flex;
align-items: center;
justify-content: center;
position: relative;
}
.custom-subtitle-btn svg {
width: 24px;
height: 24px;
fill: #fff;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
opacity: 1;
transition: opacity 0.2s ease-in-out;
}
.custom-subtitle-btn .hover-icon {
opacity: 0;
}
.custom-subtitle-btn:hover .default-icon {
opacity: 0;
}
.custom-subtitle-btn:hover .hover-icon {
opacity: 1;
}
.subtitle-backdrop {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.7);
z-index: 9998;
display: flex;
align-items: center;
justify-content: center;
backdrop-filter: blur(3px);
}
.subtitle-loader {
width: 40px;
height: 40px;
border: 4px solid rgba(255, 255, 255, 0.3);
border-radius: 50%;
border-top: 4px solid #fff;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.subtitle-error {
background: rgba(0, 0, 0, 0.8);
color: #fff;
padding: 16px 24px;
border-radius: 8px;
font-size: 14px;
}
.subtitle-container {
position: relative;
background: rgba(28, 28, 28, 0.95);
border: 1px solid rgba(255, 255, 255, 0.1);
border-radius: 8px;
padding: 16px;
z-index: 9999;
min-width: 700px;
max-width: 90vw;
max-height: 80vh;
overflow-y: auto;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
color: #fff;
font-family: 'Roboto', Arial, sans-serif;
}
.subtitle-dropdown-title {
color: #fff;
font-size: 16px;
font-weight: 500;
margin-bottom: 16px;
text-align: center;
}
.subtitle-search-container {
position: relative;
margin-bottom: 16px;
width: 100%;
max-width: 100%;
}
.subtitle-search-input {
width: 100%;
padding: 8px 12px 8px 36px;
border-radius: 4px;
border: 1px solid rgba(255, 255, 255, 0.2);
background: rgba(255, 255, 255, 0.1);
color: white;
font-size: 14px;
box-sizing: border-box;
}
.subtitle-search-input::placeholder {
color: rgba(255, 255, 255, 0.5);
}
.subtitle-search-input:focus {
outline: none;
border-color: rgba(255, 255, 255, 0.4);
background: rgba(255, 255, 255, 0.15);
}
.subtitle-search-icon {
position: absolute;
left: 10px;
top: 50%;
transform: translateY(-50%);
display: flex;
align-items: center;
justify-content: center;
}
.subtitle-search-icon svg {
fill: rgba(255, 255, 255, 0.5);
}
.subtitle-tabs {
display: flex;
border-bottom: 1px solid rgba(255, 255, 255, 0.1);
margin-bottom: 16px;
justify-content: center;
}
.subtitle-tab {
padding: 10px 20px;
cursor: pointer;
opacity: 0.7;
transition: all 0.2s;
border-bottom: 2px solid transparent;
font-size: 15px;
font-weight: 500;
}
.subtitle-tab:hover {
opacity: 1;
}
.subtitle-tab.active {
opacity: 1;
border-bottom: 2px solid #2b7fff;
}
.subtitle-content {
display: none;
}
.subtitle-content.active {
display: block;
}
.subtitle-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 10px;
margin-bottom: 16px;
}
.subtitle-grid.center-grid {
justify-content: center;
display: flex;
flex-wrap: wrap;
gap: 16px;
}
.center-grid .subtitle-item {
width: 200px;
}
.subtitle-item {
background: rgba(255, 255, 255, 0.05);
border-radius: 6px;
padding: 10px;
transition: all 0.2s;
}
.subtitle-item:hover {
background: rgba(255, 255, 255, 0.1);
}
.subtitle-language {
font-size: 13px;
font-weight: 500;
margin-bottom: 8px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.subtitle-format-container {
display: flex;
gap: 8px;
}
.subtitle-format-btn {
flex: 1;
padding: 6px 0;
border-radius: 4px;
border: none;
font-size: 12px;
font-weight: 500;
cursor: pointer;
transition: all 0.2s;
text-align: center;
position: relative;
height: 28px;
line-height: 16px;
}
.button-spinner {
width: 14px;
height: 14px;
border: 2px solid rgba(255, 255, 255, 0.3);
border-radius: 50%;
border-top: 2px solid #fff;
animation: spin 1s linear infinite;
margin: 0 auto;
}
.check-icon {
width: 14px;
height: 14px;
fill: white;
margin: 0 auto;
}
.download-success {
background-color: #00a63e !important;
}
.srt-btn {
background-color: #2b7fff;
color: white;
}
.srt-btn:hover {
background-color: #50a2ff;
}
.txt-btn {
background-color: #615fff;
color: white;
}
.txt-btn:hover {
background-color: #7c86ff;
}
.subtitle-pagination {
display: flex;
justify-content: center;
align-items: center;
margin-top: 16px;
}
.pagination-btn {
background: rgba(255, 255, 255, 0.1);
border: none;
color: white;
width: 32px;
height: 32px;
border-radius: 16px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
font-size: 18px;
transition: all 0.2s;
}
.pagination-btn:not(:disabled):hover {
background: rgba(255, 255, 255, 0.2);
}
.pagination-btn:disabled {
opacity: 0.3;
cursor: not-allowed;
}
.page-indicator {
margin: 0 16px;
font-size: 14px;
color: rgba(255, 255, 255, 0.7);
}
`;
document.head.appendChild(style);
}
function initializeButton() {
if (document.querySelector('.custom-subtitle-btn')) return;
const originalButton = document.querySelector('.ytp-subtitles-button');
if (!originalButton) return;
const newButton = document.createElement('button');
const computedStyle = window.getComputedStyle(originalButton);
Object.assign(newButton, {
className: 'ytp-button custom-subtitle-btn',
title: 'Download Subtitles'
});
newButton.setAttribute('aria-pressed', 'false');
initializeStyles(computedStyle);
newButton.append(
createSVGIcon('default-icon', false),
createSVGIcon('hover-icon', true)
);
newButton.addEventListener('click', (e) => {
const existingDropdown = document.querySelector('.subtitle-container');
existingDropdown ? existingDropdown.remove() : handleSubtitleDownload(e);
});
originalButton.insertAdjacentElement('afterend', newButton);
}
function initializeObserver() {
const observer = new MutationObserver((mutations) => {
mutations.forEach((mutation) => {
if (mutation.addedNodes.length) {
const isVideoPage = window.location.pathname === '/watch';
if (isVideoPage && !document.querySelector('.custom-subtitle-btn')) {
initializeButton();
}
}
});
});
function startObserving() {
const playerContainer = document.getElementById('player-container');
const contentContainer = document.getElementById('content');
if (playerContainer) {
observer.observe(playerContainer, {
childList: true,
subtree: true
});
}
if (contentContainer) {
observer.observe(contentContainer, {
childList: true,
subtree: true
});
}
if (window.location.pathname === '/watch') {
initializeButton();
}
}
startObserving();
if (!document.getElementById('player-container')) {
const retryInterval = setInterval(() => {
if (document.getElementById('player-container')) {
startObserving();
clearInterval(retryInterval);
}
}, 1000);
setTimeout(() => clearInterval(retryInterval), 10000);
}
const handleNavigation = () => {
if (window.location.pathname === '/watch') {
initializeButton();
}
};
window.addEventListener('yt-navigate-finish', handleNavigation);
return () => {
observer.disconnect();
window.removeEventListener('yt-navigate-finish', handleNavigation);
};
}
function addSubtitleButton() {
initializeObserver();
}
addSubtitleButton();
})();