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我正在尝试使用MediaRecorderAPI和HTML和Java脚本来进行眨眼检测，我已经捕获了视频，并用我的正常下载路径下载了它，这是我的默认浏览器路径，我已经通过了我的视频和检测眨眼。但我的问题是，我想在我的项目中创建一个目录下载捕获的视频。有谁能帮我。。。提前感谢：）
这是我的html索引.html以及主要.js地址：
'use strict';
/* globals MediaRecorder */
// Spec is at http://dvcs.w3.org/hg/dap/raw-file/tip/media-stream-capture/RecordingProposal.html
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
if (getBrowser() == "Chrome") {
var constraints = {
"audio": true,
"video": {
"mandatory": {
"minWidth": 640,
"maxWidth": 640,
"minHeight": 480,
"maxHeight": 480
},
"optional": []
}
}; //Chrome did not support the new constraints spec until 59 for video and 60 for audio
} else if (getBrowser() == "Firefox") {
var constraints = {
audio: true,
video: {
width: {
min: 640,
ideal: 640,
max: 640
},
height: {
min: 480,
ideal: 480,
max: 480
}
}
}; //Firefox
}
var recBtn = document.querySelector('button#rec');
var pauseResBtn = document.querySelector('button#pauseRes');
var stopBtn = document.querySelector('button#stop');
var videoElement = document.querySelector('video');
var dataElement = document.querySelector('#data');
var downloadLink = document.querySelector('a#downloadLink');
videoElement.controls = false;
function errorCallback(error) {
console.log('navigator.getUserMedia error: ', error);
}
/*
var mediaSource = new MediaSource();
mediaSource.addEventListener('sourceopen', handleSourceOpen, false);
var sourceBuffer;
*/
var mediaRecorder;
var chunks = [];
var count = 0;
function startRecording(stream) {
log('Start recording...');
if (typeof MediaRecorder.isTypeSupported == 'function') {
/*
MediaRecorder.isTypeSupported is a function announced in https://developers.google.com/web/updates/2016/01/mediarecorder and later introduced in the MediaRecorder API spec http://www.w3.org/TR/mediastream-recording/
*/
if (MediaRecorder.isTypeSupported('video/webm;codecs=vp9')) {
var options = {
mimeType: 'video/webm;codecs=vp9'
};
} else if (MediaRecorder.isTypeSupported('video/webm;codecs=h264')) {
var options = {
mimeType: 'video/webm;codecs=h264'
};
} else if (MediaRecorder.isTypeSupported('video/webm;codecs=vp8')) {
var options = {
mimeType: 'video/webm;codecs=vp8'
};
}
log('Using ' + options.mimeType);
mediaRecorder = new MediaRecorder(stream, options);
} else {
log('isTypeSupported is not supported, using default codecs for browser');
mediaRecorder = new MediaRecorder(stream);
}
pauseResBtn.textContent = "Pause";
mediaRecorder.start(10);
var url = window.URL || window.webkitURL;
videoElement.src = url ? url.createObjectURL(stream) : stream;
videoElement.play();
mediaRecorder.ondataavailable = function(e) {
//log('Data available...');
//console.log(e.data);
//console.log(e.data.type);
//console.log(e);
chunks.push(e.data);
};
mediaRecorder.onerror = function(e) {
log('Error: ' + e);
console.log('Error: ', e);
};
mediaRecorder.onstart = function() {
log('Started & state = ' + mediaRecorder.state);
};
mediaRecorder.onstop = function() {
var dt = new Date();
var day = dt.getDate();
var month = dt.getMonth() + 1;
var year = dt.getFullYear();
var hour = dt.getHours();
var mins = dt.getMinutes();
// var dot =dot.getDot();
var postfix = day + "." + month + "." + year + "_" + hour + "." + mins;
log('Stopped & state = ' + mediaRecorder.state);
var blob = new Blob(chunks, {
type: "video/mp4"
});
chunks = [];
// xhr.open("GET", "/favicon.png");
var videoURL = window.URL.createObjectURL(blob);
downloadLink.href = videoURL;
videoElement.src = videoURL;
downloadLink.innerHTML = 'Download video file';
var rand = Math.floor((Math.random() * 10000000));
// var location =("D:/mine project/Media-Recorder-API-Demo-master/video" + rand + postfix+ ".mp4");
var name = ("video" + "_" + rand + "_" + postfix + ".mp4");
// var name = ("D:/mine project/Media-Recorder-API-Demo-master"+"video_"+rand+".mp4") ;
downloadLink.setAttribute("download", name);
downloadLink.setAttribute("name", name);
};
mediaRecorder.onpause = function() {
log('Paused & state = ' + mediaRecorder.state);
}
mediaRecorder.onresume = function() {
log('Resumed & state = ' + mediaRecorder.state);
}
mediaRecorder.onwarning = function(e) {
log('Warning: ' + e);
};
}
//function handleSourceOpen(event) {
// console.log('MediaSource opened');
// sourceBuffer = mediaSource.addSourceBuffer('video/webm; codecs="vp9"');
// console.log('Source buffer: ', sourceBuffer);
//}
function onBtnRecordClicked() {
if (typeof MediaRecorder === 'undefined' || !navigator.getUserMedia) {
alert('MediaRecorder not supported on your browser, use Firefox 30 or Chrome 49 instead.');
} else {
navigator.getUserMedia(constraints, startRecording, errorCallback);
recBtn.disabled = true;
pauseResBtn.disabled = false;
stopBtn.disabled = false;
}
}
function onBtnStopClicked() {
mediaRecorder.stop();
videoElement.controls = true;
recBtn.disabled = false;
pauseResBtn.disabled = true;
stopBtn.disabled = true;
}
function onPauseResumeClicked() {
if (pauseResBtn.textContent === "Pause") {
console.log("pause");
pauseResBtn.textContent = "Resume";
mediaRecorder.pause();
stopBtn.disabled = true;
} else {
console.log("resume");
pauseResBtn.textContent = "Pause";
mediaRecorder.resume();
stopBtn.disabled = false;
}
recBtn.disabled = true;
pauseResBtn.disabled = false;
}
function log(message) {
dataElement.innerHTML = dataElement.innerHTML + '<br>' + message;
}
//browser ID
function getBrowser() {
var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var browserName = navigator.appName;
var fullVersion = '' + parseFloat(navigator.appVersion);
var majorVersion = parseInt(navigator.appVersion, 10);
var nameOffset, verOffset, ix;
// In Opera, the true version is after "Opera" or after "Version"
if ((verOffset = nAgt.indexOf("Opera")) != -1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset + 6);
if ((verOffset = nAgt.indexOf("Version")) != -1)
fullVersion = nAgt.substring(verOffset + 8);
}
// In MSIE, the true version is after "MSIE" in userAgent
else if ((verOffset = nAgt.indexOf("MSIE")) != -1) {
browserName = "Microsoft Internet Explorer";
fullVersion = nAgt.substring(verOffset + 5);
}
// In Chrome, the true version is after "Chrome"
else if ((verOffset = nAgt.indexOf("Chrome")) != -1) {
browserName = "Chrome";
fullVersion = nAgt.substring(verOffset + 7);
}
// In Safari, the true version is after "Safari" or after "Version"
else if ((verOffset = nAgt.indexOf("Safari")) != -1) {
browserName = "Safari";
fullVersion = nAgt.substring(verOffset + 7);
if ((verOffset = nAgt.indexOf("Version")) != -1)
fullVersion = nAgt.substring(verOffset + 8);
}
// In Firefox, the true version is after "Firefox"
else if ((verOffset = nAgt.indexOf("Firefox")) != -1) {
browserName = "Firefox";
fullVersion = nAgt.substring(verOffset + 8);
}
// In most other browsers, "name/version" is at the end of userAgent
else if ((nameOffset = nAgt.lastIndexOf(' ') + 1) <
(verOffset = nAgt.lastIndexOf('/'))) {
browserName = nAgt.substring(nameOffset, verOffset);
fullVersion = nAgt.substring(verOffset + 1);
if (browserName.toLowerCase() == browserName.toUpperCase()) {
browserName = navigator.appName;
}
}
// trim the fullVersion string at semicolon/space if present
if ((ix = fullVersion.indexOf(";")) != -1)
fullVersion = fullVersion.substring(0, ix);
if ((ix = fullVersion.indexOf(" ")) != -1)
fullVersion = fullVersion.substring(0, ix);
majorVersion = parseInt('' + fullVersion, 10);
if (isNaN(majorVersion)) {
fullVersion = '' + parseFloat(navigator.appVersion);
majorVersion = parseInt(navigator.appVersion, 10);
}
return browserName;
}<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<meta name="mobile-web-app-capable" content="yes">
<meta id="theme-color" name="theme-color" content="#fff">
<base target="_blank">
<title>Media Recorder API Demo</title>
<link rel="stylesheet" href="../css/main.css" />
<style>
a#downloadLink {
display: block;
margin: 0 0 1em 0;
min-height: 1.2em;
}
p#data {
min-height: 6em;
}
</style>
</head>
<body>
<div id="container">
<div style="text-align:center;">
<h1>Media Recorder API Demo </h1>
<video controls autoplay></video><br>
<button id="rec" onclick="onBtnRecordClicked()">Record</button>
<button id="pauseRes" onclick="onPauseResumeClicked()" disabled>Pause</button>
<button id="stop" onclick="onBtnStopClicked()" disabled>Stop</button>
</div>
<a id="downloadLink" name="mediarecorder.mp4" download=""></a>
<p id="data"></p>
<script src="../js/main.js"></script>
</div>
</body>
</html>Tags： logtruenavigatorifvarvideofunctionelse
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