// ==UserScript==
// @name         在侧边显示 Bilibili 视频字幕/文稿
// @name:en      Show transcript of Bilibili video on the side
// @version      2.1.3
// @description:en  Automatically display Bilibili video subtitles/scripts by default, support click to jump, text selection, auto-scrolling.
// @description     默认自动显示Bilibili视频字幕/文稿，支持点击跳转、文本选中、自动滚动。
// @namespace    https://bilibili.com/
// @match        https://www.bilibili.com/video/*
// @icon         https://www.bilibili.com/favicon.ico
// @author       bowencool
// @license      MIT
// @homepageURL  https://greasyfork.org/scripts/482165
// @supportURL   https://github.com/bowencool/Tampermonkey-Scripts/issues
// @require      https://cdn.jsdelivr.net/gh/bowencool/Tampermonkey-Scripts@b65b677146fdf0d0af884371a943d7f4a65f6ec8/shared/waitForElementToExist.js
// @grant        GM_addStyle
// ==/UserScript==
async function request(url, options) {
return fetch(`https://api.bilibili.com${url}`, {
...options,
credentials: "include",
})
.then((res) => res.json())
.then((data) => {
if (data.code != 0) {
throw new Error(data.message);
}
return data.data;
});
}
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
GM_addStyle(`
.transcript-box {
border: 1px solid #e1e1e1;
border-radius: 6px;
padding: 12px 16px;
max-height: 50vh;
overflow: scroll;
margin-bottom: 20px;
pointer-events: initial;
}
.transcript-line {
display: flex;
}
.transcript-line:hover {
background-color: #0002;
}
.transcript-line.active {
font-weight: bold;
background-color: #0002;
}
.transcript-line-time {
flex: none;
overflow: hidden;
width:66px;
user-select: none;
corsur: pointer;
color: var(--bpx-fn-hover-color,#00b5e5);
}
.transcript-line-content {
// white-space: nowrap;
}
`);
const MUSIC_FILTER_RATE = 0.85;
function fixNumber(n) {
return n.toLocaleString("en-US", {
minimumIntegerDigits: 2,
useGrouping: false,
});
}
function parseTime(t) {
t = parseInt(t);
return `${fixNumber(parseInt(t / 60))}:${fixNumber(t % 60)}`;
}
const transcriptBox = document.createElement("div");
transcriptBox.className = "transcript-box";
transcriptBox.innerHTML =
"开启字幕中...如果长时间无响应，请手动在视频上打开一次字幕";
async function showTranscript(subtitleInfo) {
const { body: lines } = subtitleInfo;
console.log("lines", lines);
transcriptBox.innerHTML = "";
for (let line of lines) {
if (line.music && line.music > MUSIC_FILTER_RATE) {
continue;
}
let timeLink = document.createElement("a");
timeLink.className = "transcript-line-time";
// timeLink.setAttribute("data-index", line.index);
timeLink.textContent = parseTime(line.from);
timeLink.addEventListener("click", () => {
document.querySelector("video").currentTime = line.from;
});
let lineDiv = document.createElement("div");
lineDiv.className = "transcript-line";
lineDiv.setAttribute("data-from", line.from);
lineDiv.setAttribute("data-to", line.to);
lineDiv.appendChild(timeLink);
let span = document.createElement("span");
span.className = "transcript-line-content";
span.textContent = line.content;
lineDiv.appendChild(span);
transcriptBox.appendChild(lineDiv);
}
}
async function main() {
"use strict";
// B站页面是SSR的，如果插入过早，页面 js 检测到实际 Dom 和期望 Dom 不一致，会导致重新渲染
await waitForElementToExist("img.bili-avatar-img");
waitForElementToExist(".bpx-player-ctrl-subtitle .bpx-common-svg-icon").then(
(btn) => {
btn.click();
setTimeout(() => {
btn.click();
}, 1000);
}
);
const video = await waitForElementToExist("video");
video.addEventListener("timeupdate", () => {
const currentTime = video.currentTime;
const lastActiveLine = document.querySelector(".transcript-line.active");
const lineBoxes = lastActiveLine
? [lastActiveLine, lastActiveLine.nextSibling]
: document.querySelectorAll(".transcript-line");
for (let i = 0; i < lineBoxes.length; i++) {
const currentLine = lineBoxes[i];
const from = +currentLine.getAttribute("data-from");
const to = +currentLine.getAttribute("data-to");
// console.log({ i, from, to, currentTime }, currentLine);
if (currentTime >= to || currentTime <= from) {
// Remove the 'active' class
if (currentLine.classList.contains("active")) {
currentLine.classList.remove("active");
}
}
if (currentTime > from && currentTime < to) {
const targetPosition =
currentLine.offsetTop - transcriptBox.clientHeight * 0.5;
transcriptBox.scrollTo(0, targetPosition);
// Add the 'active' class to the current line
currentLine.classList.add("active");
break;
}
}
});
const observer = new MutationObserver((mutationsList) => {
for (const mutation of mutationsList) {
if (mutation.type === "attributes" && mutation.attributeName === "src") {
if (video.src) {
transcriptBox.innerHTML =
"开启字幕中...如果长时间无响应，请手动在视频上打开一次字幕";
waitForElementToExist(
".bpx-player-ctrl-subtitle .bpx-common-svg-icon",
3000
)
.then((btn) => {
btn.click();
setTimeout(() => {
btn.click();
}, 500);
})
.catch(() => {
transcriptBox.innerHTML = "请手动打开字幕";
});
}
}
}
});
observer.observe(video, { attributes: true });
const danmukuBox = await waitForElementToExist("#danmukuBox");
// B站页面是SSR的，如果插入过早，页面 js 检测到实际 Dom 和期望 Dom 不一致，会导致重新渲染
danmukuBox.parentNode.insertBefore(transcriptBox, danmukuBox);
}
main();
traceHttp();
function traceHttp() {
overrideMethod(XMLHttpRequest.prototype, "send", (originFn) => {
return function (
// this: XMLHttpRequest,
...args /* : Parameters<XMLHttpRequest['send']> */
) {
this.addEventListener("readystatechange", async () => {
if (this.readyState === XMLHttpRequest.DONE) {
if (this.responseURL.startsWith("https://aisubtitle.hdslb.com")) {
const subtitleInfo = JSON.parse(this.responseText);
showTranscript(subtitleInfo);
}
}
});
return originFn.apply(this, args);
};
});
}
function overrideMethod /* <F extends Function> */(
target /* : { [key: string]: any } */,
key /* : string */,
replacement /* : (f: F) => F */
) {
if (!(key in target)) return;
const originFn /* : F */ = target[key];
const wrapped /* : F */ = replacement(originFn);
if (wrapped instanceof Function) {
target[key] = wrapped;
}
}