// ==UserScript==
// @name 抖音4K视频免登录下载
// @namespace none
// @version 1.0.1
// @description 不登录也可以下载(4K/HDR)视频，适用于抖音网页版。圣诞马哥陪你过冬日！
// @author 占南弦 (Gemini协助)
// @match https://*.douyin.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=douyin.com
// @grant none
// @license none
// @downloadURL https://update.greasyfork.icu/scripts/559741/%E6%8A%96%E9%9F%B34K%E8%A7%86%E9%A2%91%E5%85%8D%E7%99%BB%E5%BD%95%E4%B8%8B%E8%BD%BD.user.js
// @updateURL https://update.greasyfork.icu/scripts/559741/%E6%8A%96%E9%9F%B34K%E8%A7%86%E9%A2%91%E5%85%8D%E7%99%BB%E5%BD%95%E4%B8%8B%E8%BD%BD.meta.js
// ==/UserScript==
(function () {
"use strict";
class Config {
static global = new Config();
features = {
convert_webp_to_png: true,
filename_template: "{nickname}_{id}_{desc}"
};
_key = "__douyin-dl-user-js__";
constructor() { try { this.load(); } catch (error) { console.error(error); } }
toJSON() { return { features: this.features }; }
load() {
if (localStorage.getItem(this._key)) {
const data = JSON.parse(localStorage.getItem(this._key));
this.features = { ...this.features, ...data.features };
}
}
save() { localStorage.setItem(this._key, JSON.stringify(this.toJSON())); }
}
class Downloader {
constructor() {}
async convertWebPToPNG(blob) {
const img = new Image();
img.src = URL.createObjectURL(blob);
await new Promise((resolve, reject) => { img.onload = resolve; img.onerror = reject; });
const canvas = document.createElement("canvas");
canvas.width = img.width; canvas.height = img.height;
const ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
URL.revokeObjectURL(img.src);
return new Promise((resolve) => {
canvas.toBlob((pngBlob) => { resolve(pngBlob); }, "image/png");
canvas.onerror = (e) => { resolve(blob); };
});
}
async prepare_download_file(imgSrc, filename_input = "") {
if (imgSrc.startsWith("//")) imgSrc = `${window.location.protocol}${imgSrc}`;
console.log(`[dy-dl] 正在请求资源: ${imgSrc}`);
try {
const response = await fetch(imgSrc, { referrerPolicy: "no-referrer" });
if (!response.ok) return { ok: false, error: `Fetch failed: ${response.status}` };
const contentType = response.headers.get("content-type");
const isImage = contentType && contentType.startsWith("image/");
const isWebP = contentType && contentType.includes("webp");
let fileExt = contentType ? contentType.split("/")[1] : "mp4";
if (fileExt === "jpeg") fileExt = "jpg";
if (!isImage && !imgSrc.includes(".mp4")) fileExt = "mp4";
const determinedFileExt = isImage && isWebP ? "png" : fileExt;
let filename = filename_input || "download";
// 清理非法字符 (恢复为替换所有特殊字符，包括 /)
filename = filename.replace(/[\\/:*?"<>|]/g, "_");
if (!filename.endsWith("." + determinedFileExt)) {
filename += `.${determinedFileExt}`;
}
const blob = await response.blob();
let pngBlob = null;
if (isImage && isWebP && Config.global.features.convert_webp_to_png) {
try { pngBlob = await this.convertWebPToPNG(blob); } catch (e) {}
}
return { blob, filename, isImage, isWebP, pngBlob, fileExt: determinedFileExt, ok: true };
} catch (e) {
return { ok: false, error: e.message };
}
}
async download_blob(blob, filename) {
const link = document.createElement("a");
link.style.display = "none";
link.download = filename;
link.href = URL.createObjectURL(blob);
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
URL.revokeObjectURL(link.href);
}
async download_file(source, filename_input = "", fallback_src = []) {
let url_sources = Array.from(new Set([source, ...fallback_src].filter(x => typeof x === "string" && x.length > 0)));
for (const url of url_sources) {
try {
const result = await this.prepare_download_file(url, filename_input);
if (result.ok) {
await this.download_blob(result.pngBlob || result.blob, result.filename);
return;
} else {
console.warn(`[dy-dl] 地址失效: ${url}, 错误: ${result.error}`);
}
} catch (e) { console.error(`[dy-dl] Download error for ${url}:`, e); }
}
alert(`[dy-dl] 下载失败，可能是链接已过期或需要 Referer，请上下滑动确保抓取到源。等我更新`);
}
}
class MediaHandler {
player = null;
current_media = null;
downloading = false;
downloader;
constructor(downloader) {
this.downloader = downloader;
this.download_current_media = this._lock_download(this._download_current_media_logic.bind(this, false));
this.download_best_media = this._lock_download(this._download_current_media_logic.bind(this, true));
}
static toShortId(bigintStr) { try { return BigInt(bigintStr).toString(36); } catch (e) { return bigintStr; } }
_build_filename(media) {
const { authorInfo: { nickname }, awemeId, desc } = media;
const short_id = MediaHandler.toShortId(awemeId);
let rawDesc = desc || "";
rawDesc = rawDesc.replace(/[#/\?<>\\:\*\|":\n\r]/g, "").trim().substring(0, 80);
const cfg = Config.global.features;
// 默认模板
const f_tmpl = cfg.filename_template || "{nickname}_{id}_{desc}";
let fileName = f_tmpl
.replace(/{nickname}/g, nickname || "unknown")
.replace(/{id}/g, short_id || "0")
.replace(/{desc}/g, rawDesc || "no_desc");
return fileName.trim();
}
_bind_player_events() {
if (!this.player) return;
const update = () => {
if (this.player?.config?.awemeInfo) {
this.current_media = this.player.config.awemeInfo;
}
};
update();
this.player.on("play", update);
this.player.on("definitionChange", () => {
console.log("[dy-dl] 检测到画质切换，更新资源数据...");
update();
});
}
async _start_detect_player_change() {
while (1) {
// @ts-ignore
const currentPlayer = window.player;
if (this.player !== currentPlayer) {
this.player = currentPlayer;
if (this.player) this._bind_player_events();
}
await new Promise((r) => setTimeout(r, 1000));
}
}
_lock_download(fn) {
return async (...args) => {
if (this.downloading) return alert("正在下载中...");
this.downloading = true;
try { await fn(...args); } finally { await new Promise(r => setTimeout(r, 300)); this.downloading = false; }
};
}
_get_video_urls(video_obj) {
if (!video_obj) return [];
const sources = [];
if (video_obj.playApi) sources.push(video_obj.playApi);
if (Array.isArray(video_obj.playAddr)) sources.push(...video_obj.playAddr.map(x => x.src));
if (video_obj.bitRateList) video_obj.bitRateList.forEach(x => { if (x.playApi) sources.push(x.playApi); });
return Array.from(new Set(sources.filter(Boolean)));
}
_get_best_video_url(video_obj) {
if (!video_obj) return null;
console.group("[dy-dl] 开始分析画质数据");
let candidates = [];
if (Array.isArray(video_obj.bitRateList) && video_obj.bitRateList.length > 0) {
candidates = video_obj.bitRateList.map(item => {
const name = item.gearName || item.gear_name || "未知";
const bitrate = item.bitRate || item.bit_rate || 0;
const urlList = [];
if (item.playApi) urlList.push(item.playApi);
if (item.playAddr && item.playAddr.urlList) urlList.push(...item.playAddr.urlList);
return { name, bitrate, urls: urlList, raw: item };
});
}
if (candidates.length === 0) {
console.warn("未找到 bitRateList，尝试直接读取 playAddr");
const fallback = this._get_video_urls(video_obj);
console.groupEnd();
return fallback[0] || null;
}
candidates.sort((a, b) => b.bitrate - a.bitrate);
const best = candidates[0];
console.log(`[dy-dl] 自动选定最高码率: ${best.name} (Bitrate: ${best.bitrate})`);
console.groupEnd();
return best.urls[0] || null;
}
async _download_current_media_logic(forceBestQuality = false) {
// @ts-ignore
const realTimeMedia = window.player?.config?.awemeInfo || this.current_media;
if (!realTimeMedia) return alert("请先播放视频以获取数据。");
const { video, images } = realTimeMedia;
const filename_base = this._build_filename(realTimeMedia);
if (Array.isArray(images) && images.length > 0) {
let count = 0;
for (let i = 0; i < images.length; i++) {
const item = images[i];
const name = `${filename_base}_${i+1}`;
const i_urls = item.urlList?.filter(Boolean);
if (i_urls && i_urls.length) { await this.downloader.download_file(i_urls[0], name, i_urls); count++; }
}
if (count === 0) alert("图集下载失败");
return;
}
let targetUrl = "";
const allUrls = this._get_video_urls(video);
if (forceBestQuality) {
targetUrl = this._get_best_video_url(video);
if (!targetUrl) targetUrl = allUrls[0];
} else {
targetUrl = allUrls[0];
}
if (targetUrl) {
const finalName = forceBestQuality ? `${filename_base}_Best` : filename_base;
await this.downloader.download_file(targetUrl, finalName, allUrls);
} else {
alert("未找到视频链接");
}
}
show_media_details() { console.log(this.current_media); }
}
class FloatingUI {
constructor(mediaHandler) {
this.mh = mediaHandler;
this.iconSVG = `
`;
this.initCSS();
this.render();
this.makeDraggable();
}
initCSS() {
const style = document.createElement('style');
style.textContent = `
#dy-dl-float-container {
position: fixed;
top: 20%;
right: 20px;
z-index: 99999;
user-select: none;
display: flex;
flex-direction: row-reverse;
align-items: center;
}
#dy-dl-ball {
width: 70px;
height: 70px;
background: transparent;
box-shadow: none;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: transform 0.2s;
}
#dy-dl-ball:hover {
transform: scale(1.1);
filter: drop-shadow(0 0 5px rgba(0,0,0,0.5));
}
#dy-dl-ball:active {
transform: scale(0.95);
}
#dy-dl-ball svg, #dy-dl-ball img {
width: 100%;
height: 100%;
object-fit: contain;
}
#dy-dl-menu {
opacity: 0;
visibility: hidden;
background: rgba(0,0,0,0.8);
border-radius: 8px;
padding: 6px 0;
margin-right: 12px;
color: #fff;
font-size: 13px;
width: 130px;
transform: translateX(10px);
transition: all 0.2s ease;
pointer-events: none;
}
#dy-dl-float-container:hover #dy-dl-menu,
#dy-dl-menu:hover {
opacity: 1;
visibility: visible;
transform: translateX(0);
pointer-events: auto;
}
.dy-dl-menu-item { padding: 8px 16px; cursor: pointer; white-space: nowrap; transition: background 0.2s; }
.dy-dl-menu-item:hover { background: rgba(255,255,255,0.2); color: #fe2c55; }
.dy-dl-divider { height: 1px; background: #444; margin: 4px 10px; }
#dy-dl-settings-modal {
position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
width: 300px; background: #1f1f1f; border-radius: 12px;
box-shadow: 0 10px 25px rgba(0,0,0,0.5); z-index: 100000;
color: #fff; font-family: sans-serif; padding: 20px;
display: none; border: 1px solid #333;
}
#dy-dl-settings-modal h3 { margin: 0 0 15px 0; font-size: 16px; color: #fe2c55; }
.dy-dl-form-group { margin-bottom: 12px; }
.dy-dl-form-group label { display: block; font-size: 12px; color: #aaa; margin-bottom: 4px; }
.dy-dl-input {
width: 100%; box-sizing: border-box; background: #333; border: 1px solid #444;
color: #fff; padding: 6px 8px; border-radius: 4px; font-size: 13px;
}
.dy-dl-btn-row { display: flex; justify-content: flex-end; margin-top: 20px; gap: 10px; }
.dy-dl-btn {
padding: 6px 14px; border-radius: 4px; cursor: pointer; font-size: 13px; border: none;
}
.dy-dl-btn-primary { background: #fe2c55; color: #fff; }
.dy-dl-btn-cancel { background: #444; color: #ccc; }
`;
document.head.appendChild(style);
}
render() {
// 主浮窗
const container = document.createElement('div');
container.id = 'dy-dl-float-container';
container.innerHTML = `
${this.iconSVG}
`;
document.body.appendChild(container);
// 设置面板
const modal = document.createElement('div');
modal.id = 'dy-dl-settings-modal';
modal.innerHTML = `
脚本设置
`;
document.body.appendChild(modal);
// 事件绑定
document.getElementById('dy-dl-btn-best').onclick = () => this.mh.download_best_media();
document.getElementById('dy-dl-btn-normal').onclick = () => this.mh.download_current_media();
document.getElementById('dy-dl-btn-setting').onclick = () => this.openSettings();
document.getElementById('dy-dl-settings-cancel').onclick = () => {
document.getElementById('dy-dl-settings-modal').style.display = 'none';
};
document.getElementById('dy-dl-settings-save').onclick = () => this.saveSettings();
}
openSettings() {
const cfg = Config.global.features;
const modal = document.getElementById('dy-dl-settings-modal');
// 填充当前值
document.getElementById('dy-dl-cfg-ntmpl').value = cfg.filename_template || "{nickname}_{id}_{desc}";
modal.style.display = 'block';
}
saveSettings() {
const cfg = Config.global.features;
let n_val = document.getElementById('dy-dl-cfg-ntmpl').value.trim();
// 逻辑：如果清空了输入框，则恢复默认
if (!n_val) {
n_val = "{nickname}_{id}_{desc}";
}
cfg.filename_template = n_val;
Config.global.save();
document.getElementById('dy-dl-settings-modal').style.display = 'none';
}
makeDraggable() {
const el = document.getElementById('dy-dl-float-container');
const ball = document.getElementById('dy-dl-ball');
let isDragging = false;
let startX, startY, initialLeft, initialTop;
let hasMoved = false;
ball.onmousedown = (e) => {
isDragging = true;
hasMoved = false;
startX = e.clientX;
startY = e.clientY;
const rect = el.getBoundingClientRect();
initialLeft = rect.left;
initialTop = rect.top;
el.style.right = 'auto';
el.style.bottom = 'auto';
el.style.left = initialLeft + 'px';
el.style.top = initialTop + 'px';
e.preventDefault();
};
window.onmousemove = (e) => {
if (!isDragging) return;
const dx = e.clientX - startX;
const dy = e.clientY - startY;
if (Math.abs(dx) > 2 || Math.abs(dy) > 2) hasMoved = true;
el.style.left = `${initialLeft + dx}px`;
el.style.top = `${initialTop + dy}px`;
};
window.onmouseup = (e) => {
if (!isDragging) return;
isDragging = false;
if (!hasMoved) this.mh.download_best_media();
};
}
}
// =========================================================
// 启动
// =========================================================
const downloader = new Downloader();
const mediaHandler = new MediaHandler(downloader);
mediaHandler._start_detect_player_change();
new FloatingUI(mediaHandler);
console.log("[dy-dl] v1.0.0 已启动");
})();