Floating button + dropdown near toolbar; dark-mode readable; fetches all progressive MP4 qualities.
// ==UserScript==
// @name Bilibili Video MP4 Copy
// @name:zh-CN Bilibili 视频直链复制器
// @namespace https://github.com/TZFC
// @version 1.3
// @description Floating button + dropdown near toolbar; dark-mode readable; fetches all progressive MP4 qualities.
// @description:zh-CN 在哔哩哔哩视频工具栏附近添加带清晰度选择的悬浮复制 MP4 按钮，支持深色模式。
// @match *://www.bilibili.com/video/*
// @icon https://www.bilibili.com/favicon.ico
// @license GPL-3.0
// @run-at document-idle
// @grant GM_setClipboard
// @grant GM_xmlhttpRequest
// @connect api.bilibili.com
// ==/UserScript==
(function () {
"use strict";
const locale = (() => {
const langs = (navigator.languages && navigator.languages.length) ? navigator.languages : [navigator.language || "en"];
return String(langs[0] || "en").toLowerCase().startsWith("zh") ? "zh-CN" : "en";
})();
const L = {
"en": { button_idle:"Copy MP4", button_fetching:"Fetching…", button_copied:"Copied ✅", button_error:"Error ❌",
button_title:"Copy selected MP4 URL", dropdown_title:"Choose MP4 stream (lowest preselected)",
placeholder:"Select stream…", size_unknown:"unknown", label_unknown:"Unknown",
error_extract_bvid:"Could not extract BV identifier.", error_bad_json:"Failed to parse JSON.",
error_no_mp4:"No MP4 found.", error_no_mp4_candidates:"No MP4 candidates." },
"zh-CN": { button_idle:"复制 MP4", button_fetching:"获取中…", button_copied:"已复制 ✅", button_error:"出错 ❌",
button_title:"复制所选 MP4 直链", dropdown_title:"选择 MP4 流（默认最低画质）",
placeholder:"选择流…", size_unknown:"未知", label_unknown:"未知",
error_extract_bvid:"无法提取 BV 号。", error_bad_json:"JSON 解析失败。",
error_no_mp4:"未找到 MP4。", error_no_mp4_candidates:"没有可用的 MP4。" }
}[locale];
const style = document.createElement("style");
style.textContent = `
#bili_mp4_container {
position:absolute;
top:8px;
right:8px;
display:inline-flex;
align-items:center;
gap:8px;
z-index:9999;
}
#bili_mp4_container .bili_mp4_select {
font-size:12px; min-width:200px; padding:4px 8px; appearance:auto; -webkit-appearance:auto; -moz-appearance:auto;
}
#bili_mp4_container .bili_mp4_select option:disabled { opacity:0.7; }
@media (prefers-color-scheme: dark) {
#bili_mp4_container .bili_mp4_select { color:#e8e8e8 !important; background-color:#16181b !important; border:1px solid rgba(255,255,255,0.18) !important; -webkit-text-fill-color:#e8e8e8 !important; }
#bili_mp4_container .bili_mp4_select option { color:#e8e8e8 !important; background-color:#16181b !important; }
#bili_mp4_container .bili_mp4_select option:disabled { color:rgba(232,232,232,0.75) !important; }
}
#bili_mp4_container .bili_mp4_button {
cursor:pointer; padding:6px 12px; font-size:12px; line-height:1; border:none; border-radius:8px;
background:linear-gradient(135deg,#ff7ac3 0%,#7aa8ff 100%); color:#101010; font-weight:700;
}
#bili_mp4_container .bili_mp4_button[disabled]{ opacity:.6; cursor:not-allowed; }
`;
document.head.appendChild(style);
const getBV = () => {
const m = location.pathname.match(/\/video\/(BV[0-9A-Za-z]+)/);
if (!m) throw new Error(L.error_extract_bvid);
return m[1];
};
const getPage = () => {
const u = new URL(location.href);
return parseInt(u.searchParams.get("p") || "1", 10);
};
const clip = (t) => GM_setClipboard(t, { type: "text", mimetype: "text/plain" });
const fmtSize = (bytes) => {
if (!Number.isFinite(bytes) || bytes <= 0) return L.size_unknown;
const units = ["B","KB","MB","GB"]; let i=0, v=bytes;
while (v>=1024 && i<units.length-1){ v/=1024; i++; }
return `${v.toFixed(v>=100?0:v>=10?1:2)} ${units[i]}`;
};
const httpGetJson = (url) => new Promise((res, rej) => {
GM_xmlhttpRequest({
method:"GET", url, headers:{ Referer:"https://www.bilibili.com/" }, timeout:30000,
onload:r=>{ try{ res(JSON.parse(r.responseText)); } catch{ rej(new Error(L.error_bad_json)); } },
onerror:()=>rej(new Error("Network error: "+url)),
ontimeout:()=>rej(new Error("Network timeout: "+url))
});
});
const pagelistCache = new Map();
const playurlCache = new Map();
const getCidForPage = async (bvid, page) => {
if (!pagelistCache.has(bvid)) {
const js = await httpGetJson(`https://api.bilibili.com/x/player/pagelist?bvid=${encodeURIComponent(bvid)}&jsonp=jsonp`);
pagelistCache.set(bvid, Array.isArray(js?.data) ? js.data : []);
}
const arr = pagelistCache.get(bvid);
const item = arr.find(x=>x.page===page) || arr[0];
return item && item.cid;
};
const fetchPlayurlForQn = async (bvid, cid, qn) => {
const key = `${bvid}:${cid}:qn=${qn}`;
if (playurlCache.has(key)) return playurlCache.get(key);
const params = new URLSearchParams({
bvid:String(bvid), cid:String(cid), qn:String(qn),
fourk:"1", fnver:"0", fnval:"0", otype:"json", platform:"html5"
});
const js = await httpGetJson(`https://api.bilibili.com/x/player/playurl?${params.toString()}`);
playurlCache.set(key, js);
return js;
};
const getAllMp4Options = async (bvid, cid) => {
const baseParams = new URLSearchParams({
bvid:String(bvid), cid:String(cid), qn:"120",
fourk:"1", fnver:"0", fnval:"0", otype:"json", platform:"html5"
});
const first = await httpGetJson(`https://api.bilibili.com/x/player/playurl?${baseParams.toString()}`);
const support = Array.isArray(first?.data?.support_formats) ? first.data.support_formats : [];
const acceptQ = Array.isArray(first?.data?.accept_quality) ? first.data.accept_quality : [];
let qualities = support.length
? support.map(s => ({ qn: s.quality, label: s.new_description || s.display_desc || String(s.quality) }))
: acceptQ.map(qn => ({ qn, label: String(qn) }));
const seen = new Set();
qualities = qualities.filter(q=>!seen.has(String(q.qn)) && seen.add(String(q.qn))).sort((a,b)=>a.qn-b.qn);
const results = [];
for (const q of qualities) {
try {
const js = await fetchPlayurlForQn(bvid, cid, q.qn);
const durl = js?.data?.durl;
if (!Array.isArray(durl) || durl.length===0) continue;
let picked = null;
for (const e of durl) {
if (e?.url && e.url.toLowerCase().includes(".mp4") && !e.url.toLowerCase().includes(".m4s")) { picked = { url:e.url, size:Number(e.size||0) }; break; }
if (Array.isArray(e?.backup_url)) {
const b = e.backup_url.find(u => u.toLowerCase().includes(".mp4") && !u.toLowerCase().includes(".m4s"));
if (b) { picked = { url:b, size:Number(e.size||0) }; break; }
}
}
if (picked) results.push({ qn:q.qn, label:q.label, url:picked.url, size:picked.size });
} catch {}
}
if (results.length===0) {
const durl = first?.data?.durl;
if (Array.isArray(durl)) {
for (const e of durl) {
if (e?.url && e.url.toLowerCase().includes(".mp4") && !e.url.toLowerCase().includes(".m4s")) {
results.push({ qn:first?.data?.quality ?? 0, label:L.label_unknown, url:e.url, size:Number(e.size||0) });
}
}
}
}
const haveSize = results.every(r => Number.isFinite(r.size) && r.size>0);
results.sort((a,b)=> haveSize ? (a.size-b.size) : (a.qn-b.qn));
return results;
};
const createControls = ()=>{
const wrap = document.createElement("div");
wrap.id = "bili_mp4_container";
wrap.setAttribute("data-bili-mp4","1");
const sel = document.createElement("select"); sel.className = "bili_mp4_select"; sel.title = L.dropdown_title;
const ph = document.createElement("option"); ph.value=""; ph.disabled=true; ph.selected=true; ph.textContent=L.placeholder; sel.appendChild(ph);
const btn = document.createElement("button"); btn.className="bili_mp4_button"; btn.title=L.button_title; btn.textContent=L.button_idle;
wrap.appendChild(sel); wrap.appendChild(btn);
return { wrap, sel, btn };
};
const setBtn = (btn, label, dis)=>{ btn.textContent = label; btn.disabled = !!dis; };
const populate = (sel, list)=>{
sel.length = 1;
for (const it of list) {
const o = document.createElement("option");
o.value = it.url;
o.textContent = `${it.label} • ${fmtSize(it.size)} (qn=${it.qn})`;
sel.appendChild(o);
}
if (sel.options.length > 1) sel.selectedIndex = 1;
};
const controls = createControls();
let loaded = false;
const loadOnce = async ()=>{
if (loaded) return; loaded = true;
setBtn(controls.btn, L.button_fetching, true);
try {
const bvid = getBV(); const page = getPage(); const cid = await getCidForPage(bvid, page);
const list = await getAllMp4Options(bvid, cid);
if (!list || list.length===0) throw new Error(L.error_no_mp4_candidates);
populate(controls.sel, list); setBtn(controls.btn, L.button_idle, false);
} catch (e) { console.error(e); setBtn(controls.btn, L.button_error, true); }
};
controls.sel.addEventListener("mousedown", loadOnce, { passive:true });
controls.btn.addEventListener("mousedown", loadOnce, { passive:true });
controls.btn.addEventListener("click", async ()=>{
if (!loaded) await loadOnce();
if (!controls.sel.value) { setBtn(controls.btn, L.button_error, true); setTimeout(()=>setBtn(controls.btn, L.button_idle, false), 1200); return; }
try { clip(controls.sel.value); setBtn(controls.btn, L.button_copied, true); }
catch(e){ console.error(e); setBtn(controls.btn, L.button_error, true); }
setTimeout(()=>setBtn(controls.btn, L.button_idle, false), 1200);
}, { passive:true });
function attach_controls_into_left_container_once() {
const target = document.querySelector(".left-container.scroll-sticky");
if (!target) {
console.debug("VC: left container not found (yet)");
return false;
}
if (!target.contains(controls.wrap)) {
target.style.position = "relative"; // ensure positioning context
target.appendChild(controls.wrap);
console.debug("VC: left container attached");
}
return true;
}
// Try immediately (in case it already exists)
attach_controls_into_left_container_once();
// Observe DOM for when Vue mounts/replaces the container
const vcObserver = new MutationObserver(() => {
if (attach_controls_into_left_container_once()) {
vcObserver.disconnect();
}
});
vcObserver.observe(document.body, { childList: true, subtree: true });
// Re-try on SPA navigations (Bilibili uses History API)
const hookHistory = (method) => {
const orig = history[method];
history[method] = function () {
const ret = orig.apply(this, arguments);
// defer to next tick so DOM can render
setTimeout(() => {
// keep observing until attached; re-enable observer if needed
if (vcObserver.takeRecords(), !attach_controls_into_left_container_once()) {
// if not found yet, ensure observer is active
try { vcObserver.observe(document.body, { childList: true, subtree: true }); } catch {}
}
}, 0);
return ret;
};
};
hookHistory("pushState");
hookHistory("replaceState");
// Also handle back/forward
window.addEventListener("popstate", () => {
setTimeout(() => {
if (!attach_controls_into_left_container_once()) {
try { vcObserver.observe(document.body, { childList: true, subtree: true }); } catch {}
}
}, 0);
});
})();