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media-source-extract-stream.user.js
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media-source-extract-stream.user.js
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// ==UserScript==
// @name media-source-extract
// @namespace https://github.com/Momo707577045/media-source-extract
// @version 0.8
// @description https://github.com/Momo707577045/media-source-extract 配套插件
// @author Momo707577045
// @include *
// @exclude http://blog.luckly-mjw.cn/tool-show/media-source-extract/player/player.html
// @exclude https://www.bilibili.com/*
// @downloadURL https://blog.luckly-mjw.cn/tool-show/media-source-extract/media-source-extract.user.js
// @updateURL https://blog.luckly-mjw.cn/tool-show/media-source-extract/media-source-extract.user.js
// @grant none
// @run-at document-start
// ==/UserScript==
(function () {
'use strict';
(function () {
if (document.getElementById('media-source-extract')) {
return
}
let sumFragment = 0 // 已经捕获的所有片段数
let isClose = false // 是否关闭
let isStreamDownload = false // 是否使用流式下载
let _sourceBufferList = [] // 媒体轨道
const $showBtn = document.createElement('div') // 展示按钮
const $btnDownload = document.createElement('div') // 下载按钮
const $btnStreamDownload = document.createElement('div') // 流式下载按钮
const $downloadNum = document.createElement('div') // 已捕获视频片段数
const $tenRate = document.createElement('div') // 十倍速播放
const $closeBtn = document.createElement('div') // 关闭
const $container = document.createElement('div') // 容器
$closeBtn.innerHTML = `
<img style="
padding-top: 4px;
width: 24px;
display: inline-block;
cursor: pointer;
" src="data:image/png;base64,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">`
$showBtn.innerHTML = `
<img style="
padding-top: 4px;
width: 24px;
display: inline-block;
cursor: pointer;
" src="data:image/png;base64,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">`
// 十倍速播放
function _tenRatePlay() {
let playbackRate = 10
if ($tenRate.innerHTML === '十倍速捕获') {
$tenRate.innerHTML = '恢复正常播放'
} else {
playbackRate = 1
$tenRate.innerHTML = '十倍速捕获'
}
let $domList = document.getElementsByTagName('video')
for (let i = 0, length = $domList.length; i < length; i++) {
const $dom = $domList[i]
$dom.playbackRate = playbackRate
}
}
// 获取顶部 window title，因可能存在跨域问题，故使用 try catch 进行保护
function getDocumentTitle() {
let title = document.title;
try {
title = window.top.document.title
} catch (error) {
console.log(error)
}
return title
}
// 流式下载
function _streamDownload() {
var _hmt = _hmt || [];
(function () {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?1f12b0865d866ae1b93514870d93ce89";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
// 对应状态未下载结束的媒体轨道
const remainSourceBufferList = []
_sourceBufferList.forEach((target) => {
// 对应的 MSE 状态为已下载完成状态
if (target.MSEInstance.readyState === 'ended') {
target.streamWriter.close()
} else {
remainSourceBufferList.push(target)
}
})
// 流式下载，释放已下载完成的媒体轨道，回收内存
_sourceBufferList = remainSourceBufferList
}
// 普通下载
function _download() {
var _hmt = _hmt || [];
(function () {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?1f12b0865d866ae1b93514870d93ce89";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
_sourceBufferList.forEach((target) => {
const mime = target.mime.split(';')[0]
const type = mime.split('/')[1]
const fileBlob = new Blob(target.bufferList, { type: mime }) // 创建一个Blob对象，并设置文件的 MIME 类型
const a = document.createElement('a')
a.download = `${getDocumentTitle()}.${type}`
a.href = URL.createObjectURL(fileBlob)
a.style.display = 'none'
document.body.appendChild(a)
a.click()
a.remove()
})
}
// 监听资源全部录取成功
let _endOfStream = window.MediaSource.prototype.endOfStream
window.MediaSource.prototype.endOfStream = function () {
if (isStreamDownload) {
alert('资源全部捕获成功，即将下载！')
setTimeout(_streamDownload) // 等待 MediaSource 状态变更
_endOfStream.call(this)
return
}
if (confirm('资源全部捕获成功，即将下载！') == true) {
_download()
} else {
// 不下载资源
}
_endOfStream.call(this)
}
// 录取资源
let _addSourceBuffer = window.MediaSource.prototype.addSourceBuffer
window.MediaSource.prototype.addSourceBuffer = function (mime) {
_appendDom()
let sourceBuffer = _addSourceBuffer.call(this, mime)
let _append = sourceBuffer.appendBuffer
let bufferList = []
const _sourceBuffer = {
mime,
bufferList,
MSEInstance: this,
}
// 如果 streamSaver 已提前加载完成，则初始化对应的 streamWriter
try {
if (window.streamSaver) {
const type = mime.split(';')[0].split('/')[1]
_sourceBuffer.streamWriter = streamSaver.createWriteStream(`${getDocumentTitle()}.${type}`).getWriter()
}
} catch (error) {
console.error(error)
}
_sourceBufferList.push(_sourceBuffer)
sourceBuffer.appendBuffer = function (buffer) {
sumFragment++
$downloadNum.innerHTML = `已捕获 ${sumFragment} 个片段`
if (isStreamDownload && _sourceBuffer.streamWriter) { // 流式下载
_sourceBuffer.streamWriter.write(new Uint8Array(buffer));
} else { // 普通 blob 下载
bufferList.push(buffer)
}
_append.call(this, buffer)
}
return sourceBuffer
}
// 添加操作的 dom
function _appendDom() {
if (document.getElementById('media-source-extract')) {
return
}
$container.style = `
position: fixed;
top: 50px;
right: 50px;
text-align: right;
z-index: 9999;
`
const baseStyle = `
float:right;
clear:both;
margin-top: 10px;
padding: 0 20px;
color: white;
cursor: pointer;
font-size: 16px;
font-weight: bold;
line-height: 40px;
text-align: center;
border-radius: 4px;
background-color: #3498db;
box-shadow: 0 3px 6px 0 rgba(0, 0, 0, 0.3);
`
$tenRate.innerHTML = '十倍速捕获'
$downloadNum.innerHTML = '已捕获 0 个片段'
$btnStreamDownload.innerHTML = '特大视频下载，边下载边保存'
$btnDownload.innerHTML = '下载已捕获片段'
$btnDownload.id = 'media-source-extract'
$tenRate.style = baseStyle
$downloadNum.style = baseStyle
$btnDownload.style = baseStyle
$btnStreamDownload.style = baseStyle
$btnStreamDownload.style.display = 'none'
$showBtn.style = `
float:right;
clear:both;
display: none;
margin-top: 4px;
height: 34px;
width: 34px;
line-height: 34px;
text-align: center;
border-radius: 4px;
background-color: rgba(0, 0, 0, 0.5);
`
$closeBtn.style = `
float:right;
clear:both;
margin-top: 10px;
height: 34px;
width: 34px;
line-height: 34px;
text-align: center;
display: inline-block;
border-radius: 50%;
background-color: rgba(0, 0, 0, 0.5);
`
$btnDownload.addEventListener('click', _download)
$tenRate.addEventListener('click', _tenRatePlay)
// 关闭控制面板
$closeBtn.addEventListener('click', function () {
$downloadNum.style.display = 'none'
$btnStreamDownload.style.display = 'none'
$btnDownload.style.display = 'none'
$closeBtn.style.display = 'none'
$tenRate.style.display = 'none'
$showBtn.style.display = 'inline-block'
isClose = true
})
// 显示控制面板
$showBtn.addEventListener('click', function () {
if (!isStreamDownload) {
$btnDownload.style.display = 'inline-block'
$btnStreamDownload.style.display = 'inline-block'
}
$downloadNum.style.display = 'inline-block'
$closeBtn.style.display = 'inline-block'
$tenRate.style.display = 'inline-block'
$showBtn.style.display = 'none'
isClose = false
})
// 启动流式下载
$btnStreamDownload.addEventListener('click', function () {
(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);
})();
isStreamDownload = true
$btnDownload.style.display = 'none'
$btnStreamDownload.style.display = 'none'
_sourceBufferList.forEach(sourceBuffer => {
if (!sourceBuffer.streamWriter) {
const type = sourceBuffer.mime.split(';')[0].split('/')[1]
sourceBuffer.streamWriter = streamSaver.createWriteStream(`${getDocumentTitle()}.${type}`).getWriter()
sourceBuffer.bufferList.forEach(buffer => {
sourceBuffer.streamWriter.write(new Uint8Array(buffer));
})
sourceBuffer.bufferList = []
}
})
})
document.getElementsByTagName('html')[0].insertBefore($container, document.getElementsByTagName('head')[0]);
$container.appendChild($btnStreamDownload)
$container.appendChild($downloadNum)
$container.appendChild($btnDownload)
$container.appendChild($tenRate)
$container.appendChild($closeBtn)
$container.appendChild($showBtn)
// 加载 stream 流式下载器
try {
let $streamSaver = document.createElement('script')
$streamSaver.src = 'https://upyun.luckly-mjw.cn/lib/stream-saver.js'
document.body.appendChild($streamSaver);
$streamSaver.addEventListener('load', () => {
$btnStreamDownload.style.display = 'inline-block'
})
} catch (error) {
console.error(error)
}
}
})()
})();