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README.md
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| 1 | +++ a/README.md | |
| 1 | +## video 视频录制 | |
| 2 | + | |
| 3 | +## 使用方法： | |
| 4 | + | |
| 5 | +打开chrome浏览器，在地址栏输入`chrome://extensions/`，打开后点击`加载已解压的扩展程序`，选择本项目目录即可安装成功。 | |
| 6 | + | |
| 7 | +## TODO: | |
| 8 | + | |
| 9 | +1. 同个页面多个 video 处理 | |
| 10 | +2. 视频暂停时要暂停录制 | |
| 11 | +3. popup 增加录制提示，各种控制按钮，如静音录制、自动录制等等 | |
| 12 | +4. 在 client 端转为 MP4 格式的可行性 | |
| 13 | +5. 经常会失败，或录制不全 | |
| 14 | +6. 顶多可以同时开3个窗口录制，再多容易失败 | |
| 15 | + | |
| 16 | +## 问题记录 | |
| 17 | + | |
| 18 | +1. 很多视频网站播放完后会刷新页面到下一个播放页面，导致 `content.js` 中对 `video` 标签的 `end` `complete` 事件的监听函数中的动作不能保证成功，同样页面的 `beforeunload` `unload` 事件监听函数中的动作也不能保证成功 | |
| 19 | + | |
| 20 | +2. `MediaRecorder` 只能录制以下几种格式的视频： | |
| 21 | + | |
| 22 | +``` | |
| 23 | +Essentially, it looks like the following are (at time of writing) accepted MIME types for video/audio in Chrome: | |
| 24 | + | |
| 25 | +video/webm | |
| 26 | +video/webm;codecs=vp8 | |
| 27 | +video/webm;codecs=vp9 | |
| 28 | +video/webm;codecs=vp8.0 | |
| 29 | +video/webm;codecs=vp9.0 | |
| 30 | +video/webm;codecs=h264 | |
| 31 | +video/webm;codecs=H264 | |
| 32 | +video/webm;codecs=avc1 | |
| 33 | +video/webm;codecs=vp8,opus | |
| 34 | +video/WEBM;codecs=VP8,OPUS | |
| 35 | +video/webm;codecs=vp9,opus | |
| 36 | +video/webm;codecs=vp8,vp9,opus | |
| 37 | +video/webm;codecs=h264,opus | |
| 38 | +video/webm;codecs=h264,vp9,opus | |
| 39 | +video/x-matroska;codecs=avc1 | |
| 40 | + | |
| 41 | +audio/webm | |
| 42 | + | |
| 43 | +audio/webm;codecs=opus | |
| 44 | +(EDITED 2019-02-10: Updated to include brianchirls' link find) | |
| 45 | +``` | |
| 46 | + | |
| 47 | +3. https://github.com/ffmpegwasm/ffmpeg.wasm 不能用于浏览器插件的 background, 报错： | |
| 48 | + | |
| 49 | +> Uncaught (in promise) RuntimeError: abort(CompileError: WebAssembly.instantiate(): Wasm code generation disallowed by embedder). Build with -s ASSERTIONS=1 for more info. | |
| 50 | + | |
| 51 | +manifest.json 加上 `"content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",` 仍然报错： | |
| 52 | + | |
| 53 | +> Refused to load the script 'blob:chrome-extension://nnodhmmdmobflnhbigcheclnhdfkidpf/71e2d139-c5f1-4991-bbc0-4748802aec2a' because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval'". Note that 'script-src-elem' was not explicitly set, so 'script-src' is used as a fallback. | |
| 54 | + | |
| 55 | +4. content 和 background 通信无法直接传递 Blob 类型数据，但可以传递 `URL.createObjectURL` 创建的数据，localStorage 同样。可以使用 `new FileReader().readAsBinaryString` 解决 | |
| 56 | + | |
| 57 | +5. muted video 不会触发 `captureStream()` | |
| 58 | + | |
| 59 | +> https://bugs.chromium.org/p/chromium/issues/detail?id=1136404 | |
| 0 | 60 | \ No newline at end of file | ... | ... |
background/background.html
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| 1 | +++ a/background/background.html | |
| 1 | +<!DOCTYPE html> | |
| 2 | +<html lang="en"> | |
| 3 | +<head> | |
| 4 | + <meta charset="UTF-8"> | |
| 5 | + <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| 6 | + <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| 7 | + <title>Document</title> | |
| 8 | +</head> | |
| 9 | +<body> | |
| 10 | + | |
| 11 | +</body> | |
| 12 | +</html> | |
| 0 | 13 | \ No newline at end of file | ... | ... |
background/background.js
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| 1 | +++ a/background/background.js | |
| 1 | +// background 虽然天然可以跨域，然而既然是后台就没有 cookie 的概念，即使 fetch 设置了 credentials, cookie 依然不会被保存 | |
| 2 | +// http://stackoverflow.com/questions/29251842/why-new-js-fetch-standard-forbid-response-header-name-as-set-cookie-1-2 | |
| 3 | + | |
| 4 | +// const { createFFmpeg, fetchFile } = FFmpeg; | |
| 5 | + | |
| 6 | +// async function test(){ | |
| 7 | +// const ffmpeg = createFFmpeg({log: true}); | |
| 8 | +// await ffmpeg.load(); | |
| 9 | +// console.log(ffmpeg); | |
| 10 | +// }; | |
| 11 | + | |
| 12 | +// test(); | |
| 13 | + | |
| 14 | +const videos = {}; | |
| 15 | + | |
| 16 | +/** | |
| 17 | + * data: fr.result, | |
| 18 | + size: blobData.size, | |
| 19 | + mimeType: blobData.type, | |
| 20 | + name: document.title, | |
| 21 | + action: 'data' | |
| 22 | + */ | |
| 23 | +chrome.runtime.onMessage.addListener((msg, sender, sendResponse) => { | |
| 24 | + // console.log("Received %o from %o, frame", msg, sender.tab, sender.frameId); | |
| 25 | + sendResponse("Gotcha!"); | |
| 26 | + | |
| 27 | + if(msg.action === 'end'){ | |
| 28 | + return download(sender.documentId); | |
| 29 | + } | |
| 30 | + | |
| 31 | + if(!msg.data || msg.size !== msg.data.length){ | |
| 32 | + return console.warn('data received error: ', msg.name); | |
| 33 | + } | |
| 34 | + | |
| 35 | + const blobAsBinString = msg.data; | |
| 36 | + const bytes = new Uint8Array(blobAsBinString.length); | |
| 37 | + for(let i=0,len=blobAsBinString.length; i<len; i++){ | |
| 38 | + bytes[i] = blobAsBinString.charCodeAt(i); | |
| 39 | + } | |
| 40 | + videos[sender.documentId] = videos[sender.documentId] || {}; | |
| 41 | + videos[sender.documentId].blob = videos[sender.documentId].blob || []; | |
| 42 | + videos[sender.documentId].mimeType = msg.mimeType; | |
| 43 | + videos[sender.documentId].name = msg.name; | |
| 44 | + videos[sender.documentId].blob.push(bytes); | |
| 45 | +}); | |
| 46 | + | |
| 47 | +function download(id){ | |
| 48 | + const tar = videos[id]; | |
| 49 | + if(!tar){ | |
| 50 | + return ; | |
| 51 | + } | |
| 52 | + const blob = new Blob(tar.blob, {type: tar.mimeType}); | |
| 53 | + chrome.downloads.download({ | |
| 54 | + url: URL.createObjectURL(blob), | |
| 55 | + filename: `${tar.name}.mkv` | |
| 56 | + }, resp => { | |
| 57 | + delete videos[id]; | |
| 58 | + }); | |
| 59 | +}; | |
| 60 | + | |
| 61 | +// chrome.webNavigation.onCompleted | |
| 62 | +chrome.webNavigation.onBeforeNavigate.addListener(frame => { | |
| 63 | + // chrome.webNavigation.getFrame({ | |
| 64 | + // frameId: frame.frameId, | |
| 65 | + // tabId: frame.tabId | |
| 66 | + // }, details => { | |
| 67 | + // alert(JSON.stringify(details)); | |
| 68 | + // }); | |
| 69 | +}); | |
| 70 | + | |
| 71 | +// chrome.tabs.onUpdated.addListener(function(tabId, changeInfo, tab) { | |
| 72 | + // chrome.webNavigation.getAllFrames({tabId: tabId}, function(details) { | |
| 73 | + // details.forEach(function(frame) { | |
| 74 | + // console.log(tabId); | |
| 75 | + // // chrome.tabs.sendMessage( | |
| 76 | + // // tabId, | |
| 77 | + // // {text: 'hey_cs'}, | |
| 78 | + // // {frameId: frame.frameId}, | |
| 79 | + // // function(response) { console.log(response) } | |
| 80 | + // // ); | |
| 81 | + // }); | |
| 82 | + // }); | |
| 83 | +// }); | |
| 0 | 84 | \ No newline at end of file | ... | ... |
content/content.js
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| 1 | +++ a/content/content.js | |
| 1 | +// 这是会插入网页运行的代码 | |
| 2 | + | |
| 3 | +const $videos = [...document.querySelectorAll('video')]; | |
| 4 | + | |
| 5 | +// todo: 支持同一页面多个视频 | |
| 6 | +// $videos.map(($v, idx) => { | |
| 7 | +// const $tag = document.createElement('div'); | |
| 8 | +// const $par = $v.parentNode; | |
| 9 | +// $tag.innerText = `点击 ${idx+1} 录制`; | |
| 10 | +// $tag.style = ` | |
| 11 | +// position: absolute; | |
| 12 | +// top: 0; | |
| 13 | +// left: 0; | |
| 14 | +// z-index: 9999; | |
| 15 | +// width: ${$v.offsetWidth}px; | |
| 16 | +// height: ${$v.offsetHeight}px; | |
| 17 | +// line-height: ${$v.offsetHeight}px; | |
| 18 | +// text-align: center; | |
| 19 | +// color: red; | |
| 20 | +// font-size: ${$v.offsetWidth/10}px; | |
| 21 | +// font-weight: bold; | |
| 22 | +// border: 5px solid red; | |
| 23 | +// box-sizing: border-box; | |
| 24 | +// `; | |
| 25 | +// $par.style.position = 'relative'; | |
| 26 | +// $v.parentNode.appendChild($tag); | |
| 27 | +// $tag.addEventListener('click', () => { | |
| 28 | +// $tag.remove(); | |
| 29 | +// startRecording($v); | |
| 30 | +// return ; | |
| 31 | +// }); | |
| 32 | +// }); | |
| 33 | + | |
| 34 | +const $target = $videos[0]; | |
| 35 | +$target && $target.addEventListener('playing', () => { | |
| 36 | + // muted video 不触发 captureStream | |
| 37 | + // $target.muted = true; | |
| 38 | + $target.volume = 0.01; | |
| 39 | + if($target.isRecording){ | |
| 40 | + return ; | |
| 41 | + } | |
| 42 | + $target.isRecording = true; | |
| 43 | + // 很多视频开头有小动作，比如帮你拖拽进度条，可能会延迟触发或多次触发，所以我们要加个延时 | |
| 44 | + setTimeout(() => { | |
| 45 | + console.log('Video Recorder started...'); | |
| 46 | + startRecording($target); | |
| 47 | + }, 5000); | |
| 48 | +}); | |
| 49 | + | |
| 50 | +function startRecording($tar){ | |
| 51 | + const mimeType = 'video/webm'; | |
| 52 | + const recorder = new MediaRecorder($tar.captureStream(), { | |
| 53 | + mimeType | |
| 54 | + }); | |
| 55 | + recorder.onstart = function(e){ | |
| 56 | + // console.log('start', e); | |
| 57 | + }; | |
| 58 | + recorder.ondataavailable = function(e){ | |
| 59 | + // console.log('ondata', e); | |
| 60 | + // const blob = new Blob([e.data], { | |
| 61 | + // type: mimeType | |
| 62 | + // }); | |
| 63 | + sendBlobData(e.data); | |
| 64 | + }; | |
| 65 | + recorder.onstop = function(e){ | |
| 66 | + endBlobData(); | |
| 67 | + // console.log('stoped', e); | |
| 68 | + // 不能成功，因为有些页面视频播完会刷新到下一个视频 | |
| 69 | + // const blob = new Blob(chunks, { | |
| 70 | + // type: mimeType | |
| 71 | + // }); | |
| 72 | + // const url = URL.createObjectURL(blob); | |
| 73 | + // const a = document.createElement('a'); | |
| 74 | + // document.body.appendChild(a); | |
| 75 | + // a.style = 'display: none'; | |
| 76 | + // a.href = url; | |
| 77 | + // a.download = document.title; | |
| 78 | + // a.click(); | |
| 79 | + // window.URL.revokeObjectURL(url); | |
| 80 | + }; | |
| 81 | + recorder.onerror = function(e){ | |
| 82 | + // console.log('errored', e); | |
| 83 | + }; | |
| 84 | + // 重置播放时间 | |
| 85 | + $tar.currentTime = 0; | |
| 86 | + recorder.start(1000); | |
| 87 | + $tar.onended = function(e){ | |
| 88 | + stopRecorder(recorder); | |
| 89 | + }; | |
| 90 | + $tar.oncomplete = function(e){ | |
| 91 | + stopRecorder(recorder); | |
| 92 | + }; | |
| 93 | + window.onbeforeunload = function(e){ | |
| 94 | + stopRecorder(recorder); | |
| 95 | + }; | |
| 96 | +}; | |
| 97 | + | |
| 98 | +function sendBlobData(blobData){ | |
| 99 | + const fr = new FileReader(); | |
| 100 | + fr.onload = function(ev){ | |
| 101 | + chrome.runtime.sendMessage({ | |
| 102 | + data: fr.result, | |
| 103 | + size: blobData.size, | |
| 104 | + mimeType: blobData.type, | |
| 105 | + name: document.title, | |
| 106 | + action: 'data' | |
| 107 | + }, response => { | |
| 108 | + // console.log("Response: ", response); | |
| 109 | + }); | |
| 110 | + }; | |
| 111 | + fr.onerror = function(ev){ | |
| 112 | + console.log('FileReader error', ev); | |
| 113 | + }; | |
| 114 | + fr.readAsBinaryString(blobData); | |
| 115 | +}; | |
| 116 | + | |
| 117 | +function endBlobData(){ | |
| 118 | + chrome.runtime.sendMessage({ | |
| 119 | + data: '', | |
| 120 | + size: 0, | |
| 121 | + mimeType: '', | |
| 122 | + name: '', | |
| 123 | + action: 'end' | |
| 124 | + }, response => { | |
| 125 | + // console.log("Response: ", response); | |
| 126 | + }); | |
| 127 | +}; | |
| 128 | + | |
| 129 | +function stopRecorder(recorder){ | |
| 130 | + if(recorder.state === 'recording'){ | |
| 131 | + recorder.stop(); | |
| 132 | + } | |
| 133 | +}; | |
| 134 | + | ... | ... |
icon.png
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23 KB
lib/ffmpeg.min.js
0 → 100644
| 1 | +++ a/lib/ffmpeg.min.js | |
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