m3u8到底是什么格式？一篇文章搞定m3u8下载
注入代码
// 注入html
let $section = document.createElement('section')
$section.innerHTML = `<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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<meta name="author" content="毛静文,Momo">
<meta name="keywords" content="m3u8 下载工具, 毛静文的博客,Momo's Blog">
<meta name="description" content="m3u8 下载工具,无需下载软件,打开网站即可下载,自动检测,一键下载">
<title>m3u8 downloader</title>
<style>
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.m-p-refer .close {
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z-index: 3;
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background-size: 30px 30px;
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background-position: center center;
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28% {
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36% {
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42% {
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.m-p-input-container input {
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color: #444444;
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.m-p-input-container .range-input {
margin-left: 10px;
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width: 100px;
box-sizing: border-box;
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.m-p-input-container div {
position: relative;
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margin-left: 10px;
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.m-p-input-container div {
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/*下载状态*/
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</style>
</head>
<body>
<div id="loading">
页面加载中，请耐心等待...
<h1 style="white-space: pre;">
推荐一个 m3u8 网页版提取工具，无需下载软件，打开网站即可下载，自动检测，一键下载。
工具链接：https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/index.html
工具教程：https://segmentfault.com/a/1190000021847172?_ea=32289224
</h1>
</div>
<section id="m-app" v-cloak>
<!--顶部操作提示-->
<section class="m-p-action g-box">{{tips}}</section>
<a class="m-p-help" target="_blank" href="https://segmentfault.com/a/1190000021847172">?</a>
<a class="m-p-tamper" target="_blank" href="https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/m3u8-downloader.user.js">手动添加油猴插件</a>
<a class="m-p-github" target="_blank" href="https://github.com/Momo707577045/m3u8-downloader">github</a>
<a class="m-p-other" target="_blank" href="http://blog.luckly-mjw.cn/tool-show/index.html">其他实用工具</a>
<a class="m-p-language" href="http://blog.luckly-mjw.cn/tool-show/m3u8-downloader/index-en.html">English version</a>
<!--广告-->
<a v-if="isShowRefer" class="m-p-refer" target="_blank" href="https://segmentfault.com/a/1190000024416860">
<img src="https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/imgs/001.png" class="link">
<img src="https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/imgs/003.png" class="text">
<i class="close" @click.prevent="isShowRefer=false"></i>
</a>
<!--文件载入-->
<div class="m-p-temp-url">测试链接：http://1257120875.vod2.myqcloud.com/0ef121cdvodtransgzp1257120875/3055695e5285890780828799271/v.f230.m3u8</div>
<section class="m-p-input-container">
<input type="text" v-model="url" :disabled="downloading" placeholder="请输入 m3u8 链接">
<!--范围查询-->
<template v-if="!downloading || rangeDownload.isShowRange">
<div v-if="!rangeDownload.isShowRange" @click="getM3U8(true)">特定范围下载</div>
<template v-else>
<input class="range-input" type="number" v-model="rangeDownload.startSegment" :disabled="downloading" placeholder="起始片段">
<input class="range-input" type="number" v-model="rangeDownload.endSegment" :disabled="downloading" placeholder="截止片段">
</template>
</template>
<!--还未开始下载-->
<template v-if="!downloading">
<div @click="getM3U8(false)">原格式下载</div>
<div @click="getMP4">转码为MP4下载</div>
</template>
<div v-else-if="finishNum === rangeDownload.targetSegment && rangeDownload.targetSegment > 0" class="disable">下载完成</div>
<div v-else @click="togglePause">{{ isPause ? '恢复下载' : '暂停下载' }}</div>
</section>
<div class="m-p-cross" @click="copyCode">当无法下载，资源发生跨域限制时，在视频源页面打开控制台，注入代码解决，点击本按钮复制代码</div>
<a class="m-p-final" target="_blank" href="https://segmentfault.com/a/1190000025182822">下载的视频看不了？试试这个终结解决方案「无差别视频提取工具」，有配套「油猴」插件啦！！！</a>
<template v-if="finishList.length > 0">
<div class="m-p-line"></div>
<div class="m-p-retry" v-if="errorNum && downloadIndex >= rangeDownload.targetSegment" @click="retryAll">重新下载错误片段</div>
<div class="m-p-force" v-if="mediaFileList.length" @click="forceDownload">强制下载现有片段</div>
<div class="m-p-tips">待下载碎片总量：{{ rangeDownload.targetSegment }}，已下载：{{ finishNum }}，错误：{{ errorNum }}，进度：{{ (finishNum / rangeDownload.targetSegment * 100).toFixed(2) }}%</div>
<div class="m-p-tips">若某视频碎片下载发生错误，将标记为红色，可点击相应图标进行重试</div>
<section class="m-p-segment">
<div class="item" v-for="(item, index) in finishList" :class="[item.status]" :title="item.title" @click="retry(index)">{{ index + 1 }}</div>
</section>
</template>
</section>
</body>
<script>
var _hmt = _hmt || [];
(function () {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?1f12b0865d866ae1b93514870d93ce89";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
`
$section.style.width = '100%'
$section.style.height = '800px'
$section.style.top = '0'
$section.style.left = '0'
$section.style.position = 'relative'
$section.style.zIndex = '9999'
$section.style.backgroundColor = 'white'
document.body.appendChild($section);
// 加载 ASE 解密
let $ase = document.createElement('script')
$ase.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/aes-decryptor.js'
// 加载 mp4 转码
let $mp4 = document.createElement('script')
$mp4.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/mux-mp4.js'
// 加载 vue
let $vue = document.createElement('script')
$vue.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/vue.js'
// 监听 vue 加载完成，执行业务代码
$vue.addEventListener('load', () => {
document.getElementById('loading') && document.getElementById('loading').remove()
new Vue({
el: '#m-app',
data() {
return {
url: '', // 在线链接
tips: 'm3u8 视频在线提取工具', // 顶部提示
isPause: false, // 是否暂停下载
isGetMP4: false, // 是否转码为 MP4 下载
durationSecond: 0, // 视频持续时长
isShowRefer: true, // 是否显示推送
downloading: false, // 是否下载中
beginTime: '', // 开始下载的时间
errorNum: 0, // 错误数
finishNum: 0, // 已下载数
downloadIndex: 0, // 当前下载片段
finishList: [], // 下载完成项目
tsUrlList: [], // ts URL数组
mediaFileList: [], // 下载的媒体数组
rangeDownload: { // 特定范围下载
isShowRange: false, // 是否显示范围下载
startSegment: '', // 起始片段
endSegment: '', // 截止片段
targetSegment: 1, // 待下载片段
},
aesConf: { // AES 视频解密配置
method: '', // 加密算法
uri: '', // key 所在文件路径
iv: '', // 偏移值
key: '', // 秘钥
decryptor: null, // 解码器对象
stringToBuffer: function (str) {
return new TextEncoder().encode(str)
},
},
}
},
created() {
this.getSource();
window.addEventListener('keyup', this.onKeyup)
},
beforeDestroy() {
window.removeEventListener('keyup', this.onKeyup)
},
methods: {
// 获取链接中携带的资源链接
getSource() {
let { href } = location
if (href.indexOf('?source=') > -1) {
this.url = href.split('?source=')[1]
}
},
// 退出弹窗
onKeyup(event) {
if (event.keyCode === 13) { // 键入ESC
this.getM3U8()
}
},
// ajax 请求
ajax(options) {
options = options || {};
let xhr = new XMLHttpRequest();
if (options.type === 'file') {
xhr.responseType = 'arraybuffer';
}
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
let status = xhr.status;
if (status >= 200 && status < 300) {
options.success && options.success(xhr.response);
} else {
options.fail && options.fail(status);
}
}
};
xhr.open("GET", options.url, true);
xhr.send(null);
},
// 合成URL
applyURL(targetURL, baseURL) {
baseURL = baseURL || location.href
if (targetURL.indexOf('http') === 0) {
return targetURL
} else if (targetURL[0] === '/') {
let domain = baseURL.split('/')
return domain[0] + '//' + domain[2] + targetURL
} else {
let domain = baseURL.split('/')
domain.pop()
return domain.join('/') + '/' + targetURL
}
},
// 解析为 mp4 下载
getMP4() {
this.isGetMP4 = true
this.getM3U8()
},
// 获取在线文件
getM3U8(onlyGetRange) {
if (!this.url) {
alert('请输入链接')
return
}
if (this.url.toLowerCase().indexOf('.m3u8') === -1) {
alert('链接有误，请重新输入')
return
}
if (this.downloading) {
alert('资源下载中，请稍后')
return
}
// 在下载页面才触发，代码注入的页面不需要校验
// 当前协议不一致，切换协议
if (location.href.indexOf('blog.luckly-mjw.cn') > -1 && this.url.indexOf(location.protocol) === -1) {
//alert('当前协议不一致，跳转至正确页面重新下载')
location.href = `${this.url.split(':')[0]}://blog.luckly-mjw.cn/tool-show/m3u8-downloader/index.html?source=${this.url}`
return
}
// 在下载页面才触发，修改页面 URL，携带下载路径，避免刷新后丢失
if (location.href.indexOf('blog.luckly-mjw.cn') > -1) {
window.history.replaceState(null, '', `${location.href.split('?')[0]}?source=${this.url}`)
}
this.tips = 'm3u8 文件下载中，请稍后'
this.beginTime = new Date()
this.ajax({
url: this.url,
success: (m3u8Str) => {
this.tsUrlList = []
this.finishList = []
// 提取 ts 视频片段地址
m3u8Str.split('\n').forEach((item) => {
if (item.toLowerCase().indexOf('.ts') > -1 || item.toLowerCase().indexOf('.image') > -1) {
this.tsUrlList.push(this.applyURL(item, this.url))
this.finishList.push({
title: item,
status: ''
})
}
})
// 仅获取视频片段数
if (onlyGetRange) {
this.rangeDownload.isShowRange = true
this.rangeDownload.endSegment = this.tsUrlList.length
this.rangeDownload.targetSegment = this.tsUrlList.length
return
} else {
let startSegment = Math.max(this.rangeDownload.startSegment || 1, 1) // 最小为 1
let endSegment = Math.max(this.rangeDownload.endSegment || this.tsUrlList.length, 1)
startSegment = Math.min(startSegment, this.tsUrlList.length) // 最大为 this.tsUrlList.length
endSegment = Math.min(endSegment, this.tsUrlList.length)
this.rangeDownload.startSegment = Math.min(startSegment, endSegment)
this.rangeDownload.endSegment = Math.max(startSegment, endSegment)
this.rangeDownload.targetSegment = this.rangeDownload.endSegment - this.rangeDownload.startSegment + 1
this.downloadIndex = this.rangeDownload.startSegment - 1
this.downloading = true
}
// 获取需要下载的 MP4 视频长度
if (this.isGetMP4) {
let infoIndex = 0
m3u8Str.split('\n').forEach(item => {
if (item.toUpperCase().indexOf('#EXTINF:') > -1) { // 计算视频总时长，设置 mp4 信息时使用
infoIndex++
if (this.rangeDownload.startSegment <= infoIndex && infoIndex <= this.rangeDownload.endSegment) {
this.durationSecond += parseFloat(item.split('#EXTINF:')[1])
}
}
})
}
// 检测视频 AES 加密
if (m3u8Str.indexOf('#EXT-X-KEY') > -1) {
this.aesConf.method = (m3u8Str.match(/(.*METHOD=([^,\s]+))/) || ['', '', ''])[2]
this.aesConf.uri = (m3u8Str.match(/(.*URI="([^"]+))"/) || ['', '', ''])[2]
this.aesConf.iv = (m3u8Str.match(/(.*IV=([^,\s]+))/) || ['', '', ''])[2]
this.aesConf.iv = this.aesConf.iv ? this.aesConf.stringToBuffer(this.aesConf.iv) : ''
this.aesConf.uri = this.applyURL(this.aesConf.uri, this.url)
// let params = m3u8Str.match(/#EXT-X-KEY:([^,]*,?METHOD=([^,]+))?([^,]*,?URI="([^,]+)")?([^,]*,?IV=([^,^\n]+))?/)
// this.aesConf.method = params[2]
// this.aesConf.uri = this.applyURL(params[4], this.url)
// this.aesConf.iv = params[6] ? this.aesConf.stringToBuffer(params[6]) : ''
this.getAES();
} else if (this.tsUrlList.length > 0) { // 如果视频没加密，则直接下载片段，否则先下载秘钥
this.downloadTS()
} else {
this.alertError('资源为空，请查看链接是否有效')
}
},
fail: () => {
this.alertError('链接不正确，请查看链接是否有效')
}
})
},
// 获取AES配置
getAES() {
alert('视频被 AES 加密，点击确认，进行视频解码')
this.ajax({
type: 'file',
url: this.aesConf.uri,
success: (key) => {
// console.log('getAES', key)
// this.aesConf.key = this.aesConf.stringToBuffer(key)
this.aesConf.key = key
this.aesConf.decryptor = new AESDecryptor()
this.aesConf.decryptor.constructor()
this.aesConf.decryptor.expandKey(this.aesConf.key);
this.downloadTS()
},
fail: () => {
this.alertError('视频已进行定制化加密，不提供定制化解密下载')
}
})
},
// ts 片段的 AES 解码
aesDecrypt(data, index) {
let iv = this.aesConf.iv || new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, index])
return this.aesConf.decryptor.decrypt(data, 0, iv.buffer || iv, true)
},
// 下载分片
downloadTS() {
this.tips = 'ts 视频碎片下载中，请稍后'
let download = () => {
let isPause = this.isPause // 使用另一个变量来保持下载前的暂停状态，避免回调后没修改
let index = this.downloadIndex
this.downloadIndex++
if (this.finishList[index] && this.finishList[index].status === '') {
this.ajax({
url: this.tsUrlList[index],
type: 'file',
success: (file) => {
this.dealTS(file, index, () => this.downloadIndex < this.rangeDownload.endSegment && !isPause && download())
},
fail: () => {
this.errorNum++
this.finishList[index].status = 'error'
if (this.downloadIndex < this.rangeDownload.endSegment) {
!isPause && download()
}
}
})
} else if (this.downloadIndex < this.rangeDownload.endSegment) { // 跳过已经成功的片段
!isPause && download()
}
}
// 建立多少个 ajax 线程
for (let i = 0; i < Math.min(10, this.rangeDownload.targetSegment - this.finishNum); i++) {
download(i)
}
},
// 处理 ts 片段，AES 解密、mp4 转码
dealTS(file, index, callback) {
const data = this.aesConf.uri ? this.aesDecrypt(file, index) : file
this.conversionMp4(data, index, (afterData) => { // mp4 转码
this.mediaFileList[index - this.rangeDownload.startSegment + 1] = afterData // 判断文件是否需要解密
this.finishList[index].status = 'finish'
this.finishNum++
if (this.finishNum === this.rangeDownload.targetSegment) {
this.downloadFile(this.mediaFileList, this.formatTime(this.beginTime, 'YYYY_MM_DD hh_mm_ss'))
}
callback && callback()
})
},
// 转码为 mp4
conversionMp4(data, index, callback) {
if (this.isGetMP4) {
let transmuxer = new muxjs.Transmuxer({
keepOriginalTimestamps: true,
duration: parseInt(this.durationSecond),
});
transmuxer.on('data', segment => {
if (index === this.rangeDownload.startSegment - 1) {
let data = new Uint8Array(segment.initSegment.byteLength + segment.data.byteLength);
data.set(segment.initSegment, 0);
data.set(segment.data, segment.initSegment.byteLength);
callback(data.buffer)
} else {
callback(segment.data)
}
})
transmuxer.push(new Uint8Array(data));
transmuxer.flush();
} else {
callback(data)
}
},
// 暂停与恢复
togglePause() {
this.isPause = !this.isPause
!this.isPause && this.retryAll()
},
// 重新下载某个片段
retry(index) {
if (this.finishList[index].status === 'error') {
this.finishList[index].status = ''
this.ajax({
url: this.tsUrlList[index],
type: 'file',
success: (file) => {
this.errorNum--
this.dealTS(file, index)
},
fail: () => {
this.finishList[index].status = 'error'
}
})
}
},
// 重新下载所有错误片段
retryAll() {
this.finishList.forEach((item) => { // 重置所有片段状态
if (item.status === 'error') {
item.status = ''
}
})
this.errorNum = 0
this.downloadIndex = this.rangeDownload.startSegment - 1
this.downloadTS()
},
// 下载整合后的TS文件
downloadFile(fileDataList, fileName) {
this.tips = 'ts 碎片整合中，请留意浏览器下载'
let fileBlob = null
let a = document.createElement('a')
if (this.isGetMP4) {
fileBlob = new Blob(fileDataList, { type: 'video/mp4' }) // 创建一个Blob对象，并设置文件的 MIME 类型
a.download = fileName + '.mp4'
} else {
fileBlob = new Blob(fileDataList, { type: 'video/MP2T' }) // 创建一个Blob对象，并设置文件的 MIME 类型
a.download = fileName + '.ts'
}
a.href = URL.createObjectURL(fileBlob)
a.style.display = 'none'
document.body.appendChild(a)
a.click()
a.remove()
},
// 格式化时间
formatTime(date, formatStr) {
const formatType = {
Y: date.getFullYear(),
M: date.getMonth() + 1,
D: date.getDate(),
h: date.getHours(),
m: date.getMinutes(),
s: date.getSeconds(),
}
return formatStr.replace(
/Y+|M+|D+|h+|m+|s+/g,
target => (new Array(target.length).join('0') + formatType[target[0]]).substr(-target.length)
)
},
// 强制下载现有片段
forceDownload() {
if (this.mediaFileList.length) {
this.downloadFile(this.mediaFileList, this.formatTime(this.beginTime, 'YYYY_MM_DD hh_mm_ss'))
} else {
alert('当前无已下载片段')
}
},
// 发生错误，进行提示
alertError(tips) {
alert(tips)
this.downloading = false
this.tips = 'm3u8 视频在线提取工具';
},
// 拷贝本页面本身，解决跨域问题
copyCode() {
if (this.tips !== '代码下载中，请稍后') {
this.tips = '代码下载中，请稍后';
this.ajax({
url: './index.html',
success: (fileStr) => {
let fileList = fileStr.split(`<!--vue 前端框架--\>`);
let dom = fileList[0];
let script = fileList[1] + fileList[2];
script = script.split('');
script = script[1] + script[2];
if (this.url) {
script = script.replace(`url: '', // 在线链接`, `url: '${this.url}',`);
}
let codeStr = `
// 注入html
let $section = document.createElement('section')
$section.innerHTML = \`${dom}\`
$section.style.width = '100%'
$section.style.height = '800px'
$section.style.top = '0'
$section.style.left = '0'
$section.style.position = 'relative'
$section.style.zIndex = '9999'
$section.style.backgroundColor = 'white'
document.body.appendChild($section);
// 加载 ASE 解密
let $ase = document.createElement('script')
$ase.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/aes-decryptor.js'
// 加载 mp4 转码
let $mp4 = document.createElement('script')
$mp4.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/mux-mp4.js'
// 加载 vue
let $vue = document.createElement('script')
$vue.src = 'https://blog.luckly-mjw.cn/tool-show/m3u8-downloader/vue.js'
// 监听 vue 加载完成，执行业务代码
$vue.addEventListener('load', () => {${script}})
document.body.appendChild($vue);
document.body.appendChild($mp4);
document.body.appendChild($ase);
alert('注入成功，请滚动到页面底部，若白屏则等待资源加载')
`;
this.copyToClipboard(codeStr);
this.tips = '复制成功，打开视频网页控制台，注入本代码';
},
fail: () => {
this.alertError('链接不正确，请查看链接是否有效');
},
})
}
},
// 拷贝剪切板
copyToClipboard(content) {
clearTimeout(this.timeouter)
if (!document.queryCommandSupported('copy')) {
return false
}
let $input = document.createElement('textarea')
$input.style.opacity = '0'
$input.value = content
document.body.appendChild($input)
$input.select()
const result = document.execCommand('copy')
document.body.removeChild($input)
$input = null
return result
},
}
})
})
document.body.appendChild($vue);
document.body.appendChild($mp4);
document.body.appendChild($ase);
alert('注入成功，请滚动到页面底部，若白屏则等待资源加载')
