// ==UserScript==
// @name 短视频去水印下载 Pro + 全站嗅探下载
// @name:zh-CN 短视频去水印下载 Pro + 全站嗅探下载
// @version 3.3.3
// @license MIT
// @description 🎯 支持抖音、小红书网页版无水印高清下载。抖音：自动识别当前播放视频，一键下载无水印 MP4、封面图，支持图文帖多图批量保存，自动提取作者/标题/发布时间；小红书：支持视频笔记、图文笔记，自动解析无水印原图和视频链接，批量下载图片同时嗅探所有网页中的 M3U8、MP4 视频链接，可直接复制或下载。
// @tag 视频下载 视频嗅探 去水印 全平台下载 抖音 小红书
// @author LightDownload
// @match *://*.douyin.com/*
// @match *://*.xiaohongshu.com/*
// @match *://*.bilibili.com/*
// @match *://*/*
// @grant GM_xmlhttpRequest
// @grant GM_download
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_addStyle
// @grant unsafeWindow
// @connect *
// @run-at document-start
// @namespace https://greasyfork.org/
// ==/UserScript==
(function () {
'use strict';
/* ══════════════════════════════════════════════════════════
STATE
══════════════════════════════════════════════════════════ */
var dirHandle = null;
var videoInfo = null;
var isDownloading = false;
var lastNavUrl = '';
var imageDownloading = false;
var capturedCovers = [];
var xhsNoteData = null;
var detectedUrls = new Set();
var sniffMemoryVault = [];
var isSniffSectionVisible = GM_getValue('sniff_section_visible', false);
/* ══════════════════════════════════════════════════════════
PLATFORM DETECTION
══════════════════════════════════════════════════════════ */
function isDouyin() { return location.hostname.includes('douyin.com'); }
function isXiaohongshu() { return location.hostname.includes('xiaohongshu.com'); }
function isBili() { return location.hostname.includes('bilibili.com'); }
function isDyOrXhs() { return isDouyin() || isXiaohongshu(); }
/* ══════════════════════════════════════════════════════════
UTILS
══════════════════════════════════════════════════════════ */
function q(id) { return document.getElementById(id); }
function esc(s) { return String(s||'').replace(/&/g,'&').replace(//g,'>'); }
function avPh() { var d=document.createElement('div'); d.className='svd-avph'; d.textContent='👤'; return d; }
function setStatus(m, c) {
var e = q('svd-stattxt');
if (!e) return;
e.textContent = m;
e.className = c || '';
}
function setProgress(r) {
var b = q('svd-prog'), f = q('svd-progfill');
if (!b || !f) return;
if (r <= 0 || r >= 1) { b.style.display = 'none'; f.style.width = '0%'; }
else { b.style.display = 'block'; f.style.width = (r * 100).toFixed(1) + '%'; }
}
function setBtnsEnabled(on) {
var vb = q('svd-btn-v'), cb = q('svd-btn-c');
if (!on) { if (vb) vb.disabled = true; if (cb) cb.disabled = true; return; }
if (vb) vb.disabled = !!(videoInfo && videoInfo.isImagePost);
if (cb) cb.disabled = !(videoInfo && videoInfo.coverUrl);
}
function sanitize(s) { return (s||'').replace(/[\\/:*?"<>|\r\n]/g,'_').trim().substring(0,80); }
/** 从 URL 提取自然文件名，用于嗅探下载 */
function getUrlFilename(url) {
try {
var pathname = new URL(url).pathname;
var parts = pathname.split('/').filter(Boolean);
var last = parts[parts.length - 1] || '';
if (last) return decodeURIComponent(last);
} catch(e) {}
var m = url.match(/\/([^/?#]+)(?:\?|#|$)/);
return m ? decodeURIComponent(m[1]) : 'video.mp4';
}
function copyToClipboard(text) {
if (navigator.clipboard && navigator.clipboard.writeText) return navigator.clipboard.writeText(text);
return new Promise(function(resolve, reject) {
var ta = document.createElement('textarea');
ta.value = text; ta.style.cssText = 'position:fixed;opacity:0';
document.body.appendChild(ta); ta.select();
try { document.execCommand('copy'); resolve(); } catch(e) { reject(e); }
document.body.removeChild(ta);
});
}
/* ══════════════════════════════════════════════════════════
INDEXEDDB — 目录句柄持久化
══════════════════════════════════════════════════════════ */
function _idbOp(mode, fn) {
return new Promise(function(resolve) {
var req = indexedDB.open('svd_fs_db', 1);
req.onupgradeneeded = function(e) { e.target.result.createObjectStore('handles'); };
req.onsuccess = function(e) { fn(e.target.result, resolve); };
req.onerror = function() { resolve(null); };
});
}
function _idbSaveHandle(handle) {
return _idbOp('readwrite', function(db, resolve) {
var tx = db.transaction('handles', 'readwrite');
tx.objectStore('handles').put(handle, 'dir');
tx.oncomplete = function() { db.close(); resolve(true); };
tx.onerror = function() { db.close(); resolve(false); };
});
}
function _idbLoadHandle() {
return _idbOp('readonly', function(db, resolve) {
var tx = db.transaction('handles', 'readonly');
var gr = tx.objectStore('handles').get('dir');
gr.onsuccess = function() { db.close(); resolve(gr.result || null); };
gr.onerror = function() { db.close(); resolve(null); };
});
}
async function _restoreDirHandle() {
try {
var handle = await _idbLoadHandle();
if (!handle) return;
var perm = await handle.queryPermission({ mode: 'readwrite' });
if (perm === 'granted') {
dirHandle = handle;
_applyDirHandleUI(handle.name, true);
} else {
GM_setValue('svd_last_dir_name', handle.name);
_applyDirHandleUI(handle.name, false);
}
} catch(e) {}
}
function _applyDirHandleUI(name, authorized) {
var d = q('svd-path-txt');
if (!d) return;
if (authorized) {
d.textContent = '📁 ' + name + ' (已授权)';
d.title = '目录：' + name;
} else {
d.textContent = '📁 ' + name + '（请点击按钮重新授权）';
}
d.classList.add('set');
}
/* ══════════════════════════════════════════════════════════
SNIFFER — 视频链接嗅探
══════════════════════════════════════════════════════════ */
function getResTag(u) {
u = u.toLowerCase();
if (u.includes('8k') || u.includes('4320')) return '[👑 8K] ';
if (u.includes('4k') || u.includes('2160')) return '[💎 4K] ';
if (u.includes('1080') || u.includes('1920')) return '[🔥 1080P] ';
if (u.includes('720')) return '[🎬 720P] ';
if (u.includes('480')) return '[📺 480P] ';
return '';
}
function tryRemoveWatermark(rawUrl) {
try {
var u = new URL(rawUrl, location.href);
var wmParams = ['watermark','wm','x-watermark','x-wm','logo'];
var changed = false;
wmParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } });
var newPath = u.pathname.replace(/\/watermark\//i, '/');
if (newPath !== u.pathname) { u.pathname = newPath; changed = true; }
return changed ? u.href : null;
} catch(e) {}
return null;
}
function addUrl(url, customTitle, isBiliBatch) {
if (typeof url !== 'string') return;
var fingerprint = url.split('?')[0];
if (detectedUrls.has(fingerprint)) return;
if (!isBiliBatch &&
!/\.(m3u8|mp4|ts|m4s|mpd|m4v|mkv|webm|mov|avi|flv)(\?|$)/i.test(url) &&
!/\/video\/|\/vod\/|\/stream\/|\/playlist\/|m3u8/i.test(url)) return;
if (url.includes('fragment') && (url.includes('.ts') || url.includes('seg-'))) return;
if (window.self !== window.top) {
window.top.postMessage({ type: 'VIDEO_SNIFF_ADD', url: url, customTitle: customTitle, isBiliBatch: isBiliBatch }, '*');
return;
}
detectedUrls.add(fingerprint);
sniffMemoryVault.push({ url: url, customTitle: customTitle, isBiliBatch: isBiliBatch });
renderSingleSniffItem({ url: url, customTitle: customTitle, isBiliBatch: isBiliBatch });
updateSniffStatus();
if (customTitle && !isBiliBatch) {
var cleanUrl = tryRemoveWatermark(url);
if (cleanUrl) {
var cleanFP = cleanUrl.split('?')[0];
if (!detectedUrls.has(cleanFP)) addUrl(cleanUrl, customTitle + '（去水印尝试）', false);
}
}
}
function renderSingleSniffItem(item) {
var list = q('svd-m3u8-list');
if (!list) return;
var li = document.createElement('li');
li.className = 'svd-m3u8-item';
var tag = item.isBiliBatch ? '[🎬 选集] ' : getResTag(item.url);
var name = item.customTitle
? (tag + item.customTitle)
: (tag + item.url.split('?')[0].substring(0, 60) + '...');
li.innerHTML = ''
+ ''
+ '
' + name + '
'
+ '
'
+ ''
+ ''
+ '
',
'
',
' ',
' ',
' ',
' ',
(isBili() ? ' ' : ''),
'
',
'
',
'
',
'
平台—
',
'
',
'
发布时间—
',
'
',
'
',
'
',
'
',
'
',
'
',
' ',
' ',
'
'
].join('') : '';
w.innerHTML = [
'',
'
',
'
' + platformTitle + '',
'
',
'
',
'
',
'
✏️ 文件命名 (留空则自动生成)
',
'
',
'
',
'
By 花海🌸',
'
❤️ 赞赏支持',
'
',
'
赞赏支持
',
'
如果觉得好用，请作者喝杯咖啡☕
',
'
',
'
微信
',
'
',
'
' + esc(info.author) + '
' + (info.authorId ? '@' + esc(info.authorId) + '
' : '');
ac.appendChild(nw); ae.appendChild(ac);
q('svd-f-time').textContent = info.createTime;
q('svd-f-desc').textContent = info.desc || '无文案';
var te = q('svd-f-tags'); te.innerHTML = '';
if (info.topics && info.topics.length) {
var tw = document.createElement('div'); tw.className = 'svd-tags';
info.topics.forEach(function(t) { var sp = document.createElement('span'); sp.className = 'svd-tag'; sp.textContent = t; tw.appendChild(sp); });
te.appendChild(tw);
} else te.innerHTML = '无话题标签';
var ce = q('svd-f-cov'); ce.innerHTML = '';
if (info.coverUrl) {
var ci = new Image(); ci.className = 'svd-cimg'; ci.src = info.coverUrl; ci.title = '点击查看原图';
ci.addEventListener('click', function() { window.open(info.coverUrl, '_blank'); });
ci.onerror = function() { ce.innerHTML = '封面加载失败
'; };
ce.appendChild(ci);
} else ce.innerHTML = '封面加载中...
';
var lbl = q('svd-content-lbl'); if (lbl) lbl.textContent = info.isImagePost ? '图片' : '视频';
var ve = q('svd-f-vid'); ve.innerHTML = '';
if (info.isImagePost) {
if (info.images && info.images.length) buildImageGrid(ve, info);
else ve.innerHTML = '图文笔记（含背景音乐，无独立视频）';
var vbtn = q('svd-btn-v'); if (vbtn) vbtn.disabled = true;
} else {
if (info.videoUrl) {
var vd = document.createElement('video'); vd.className = 'svd-vid'; vd.controls = true; vd.preload = 'metadata';
if (info.coverUrl) vd.poster = info.coverUrl;
vd.src = info.videoUrl; ve.appendChild(vd);
} else ve.innerHTML = '点击下载按钮自动捕获高清链接';
}
var ue = q('svd-f-url');
if (ue) {
if (info.videoUrl) { ue.textContent = info.videoUrl.substring(0, 90) + (info.videoUrl.length > 90 ? '…' : ''); ue.className = 'svd-url found'; }
else { ue.textContent = '点击下载按钮实时捕获'; ue.className = 'svd-url'; }
}
q('svd-btn-v').disabled = !!(info.isImagePost);
q('svd-btn-c').disabled = !info.coverUrl;
setStatus('✅ 视频信息加载完成', 'ok');
}
function buildImageGrid(container, info) {
var grid = document.createElement('div'); grid.className = 'svd-imgrid';
info.images.forEach(function(item, idx) {
var url = typeof item === 'string' ? item : item.url;
var liveUrl = (typeof item === 'object' && item.liveUrl) ? item.liveUrl : null;
var itemDiv = document.createElement('div'); itemDiv.className = 'svd-ig-item';
var numLabel = document.createElement('span'); numLabel.className = 'svd-ig-idx'; numLabel.textContent = idx + 1;
var img = new Image(); img.className = 'svd-igthumb'; img.src = url; img.loading = 'lazy';
img.onerror = function() { itemDiv.style.background = '#f0f0f0'; img.style.opacity = '.3'; };
var dlBtn = document.createElement('button'); dlBtn.className = 'svd-ig-dl'; dlBtn.title = '下载第' + (idx+1) + '张'; dlBtn.textContent = '⬇';
(function(u, live, i) {
dlBtn.addEventListener('click', function(e) {
e.stopPropagation();
if (live) doDownload(live, getFilename(info, 'image', i).replace(/\.(jpg|jpeg|png|webp)$/i, '.mp4'), '实况视频');
else doDownloadImage(u, getFilename(info, 'image', i));
});
})(url, liveUrl, idx);
itemDiv.appendChild(img); itemDiv.appendChild(numLabel); itemDiv.appendChild(dlBtn);
grid.appendChild(itemDiv);
});
container.appendChild(grid);
var allBtn = document.createElement('button'); allBtn.className = 'svd-imgdl-all';
allBtn.innerHTML = '⬇ 全部下载（' + info.images.length + '张）';
allBtn.addEventListener('click', function() {
if (imageDownloading) { setStatus('图片下载中，请稍候...', 'info'); return; }
imageDownloading = true; allBtn.disabled = true;
var total = info.images.length, done = 0;
function scheduleNext(idx) {
if (idx >= total) return;
var item = info.images[idx];
var url = typeof item === 'string' ? item : item.url;
var liveUrl = (typeof item === 'object' && item.liveUrl) ? item.liveUrl : null;
setTimeout(function() {
var finish = function() { done++; if (done >= total) { imageDownloading = false; allBtn.disabled = false; } };
if (liveUrl) { doDownload(liveUrl, getFilename(info, 'image', idx).replace(/\.(jpg|jpeg|png|webp)$/i, '.mp4'), '实况视频'); finish(); }
else doDownloadImage(url, getFilename(info, 'image', idx), finish);
scheduleNext(idx + 1);
}, idx === 0 ? 0 : 300);
}
scheduleNext(0);
});
container.appendChild(allBtn);
}
/* ══════════════════════════════════════════════════════════
REFRESH & BOOTSTRAP
══════════════════════════════════════════════════════════ */
function doRefresh() {
setStatus('正在读取视频信息...', 'info');
setTimeout(function() {
if (!isDyOrXhs()) { updateSniffStatus(); return; }
var info = extractVideoInfo();
if (info) renderInfo(info);
else setStatus('❌ 未能解析视频信息，请等视频播放后刷新', 'err');
}, 350);
}
function bootstrap() {
injectStyles();
buildWindow();
buildTrigger();
_restoreDirHandle();
if (isDouyin()) {
watchForNewItems();
setTimeout(function() { setupItemObserver(); doRefresh(); }, 1800);
} else {
setTimeout(doRefresh, 1500);
}
}
if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', function() { setTimeout(bootstrap, 500); });
else setTimeout(bootstrap, 500);
setInterval(function() {
if (!q('svd-win')) buildWindow();
if (!q('svd-trig')) buildTrigger();
if (!q('svd-styles')) injectStyles();
tickCapture();
if (isSniffSectionVisible && !isDyOrXhs()) captureVideoElementSrcs();
var cur = location.href;
if (cur !== lastNavUrl) {
lastNavUrl = cur;
capturedCovers = [];
xhsNoteData = null;
imageDownloading = false;
if (!isDownloading) setTimeout(doRefresh, isDouyin() ? 1800 : 1000);
}
}, 800);
})();