录制和保存视频，通过三个按钮配合完成。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body >
<div style="width: 80%; margin: 0 auto;">
<!-- <button id="begin">开始</button>-->
<button id="record" disabled>录制</button>
<!-- <button id="play" disabled>播放</button>-->
<button id="download" disabled>下载</button>
<button id="reStart" disabled>重新开始</button>
<!-- <button id="upload">上传</button>-->
</div>
<video id="gum", controls preload="none" width="30%" height="30%" data-setup="{}" autoplay="autoplay"></video>
<p id="status", style="text-align: center;width: 402px;"></p>
<script>
var mediaSource = new MediaSource(); //打开电脑摄像头
// mediaSource.addEventListener('sourceopen', handleSourceOpen, false);
var mediaRecorder ;
var recordedBlobs;
var sourceBuffer;
var littleVideo = false;
var gumVideo = document.querySelector("#gum"); //把图像显示在video上
var statusV = document.getElementById("status"); //显示状态信息
// var recordedVideo = document.querySelector("video#recorded");
// statusV.innerText = '准备阶段';
// var beginButton = document.querySelector("button#begin");
var recordButton = document.querySelector("button#record");
var playButton = document.querySelector("button#play");
var downloadButton = document.querySelector("button#download");
var reStartButton = document.querySelector("button#reStart");
var uploadBtn = document.querySelector("button#upload");
recordButton.onclick = toggleRecording;
// playButton.onclick = play;
downloadButton.onclick = download;
reStartButton.onclick = restartRecord;
var constraints = {
audio: true,
video: true
};
function handleSuccess(stream) {
recordButton.disabled = false;
console.log("getUserMedia() got stream: ", stream);
window.stream = stream;
if (window.URL) {
//gumVideo.src = window.URL.createObjectURL(stream);
gumVideo.srcObject = stream;
} else {
gumVideo.src = stream;
}
gumVideo.addEventListener('pause',function() {if(i){window.clearInterval(i);}},false);
gumVideo.addEventListener('ended',function() {if(i){clearInterval(i);}},false);
}
// function handleError(error) {
// console.log("navigator.getUserMedia error: ", error);
// }
navigator.mediaDevices.getUserMedia(constraints). //打开摄像头
then(handleSuccess).catch(handleError);
// function handleSourceOpen(event) {
// console.log("MediaSource opened");
// sourceBuffer = mediaSource.addSourceBuffer('video/webm; codecs="vp8"');
// console.log("Source buffer: ", sourceBuffer);
// }
// recordedVideo.addEventListener('error', function(ev) {
// console.error('MediaRecording.recordedMedia.error()');
// alert('Your browser can not play\n\n' + recordedVideo.src
// + '\n\n media clip. event: ' + JSON.stringify(ev));
// }, true);
function handleDataAvailable(event) {
if (event.data && event.data.size > 0) {
recordedBlobs.push(event.data);
}
}
function handleStop(event) {
console.log("Recorder stopped: ", event);
}
function toggleRecording() {
if (recordButton.textContent === '录制' || recordButton.textContent === '重录') {
littleVideo = false;
startRecording();
} else {
stopRecording();
recordButton.textContent = '重录';
// playButton.disabled = false;
downloadButton.disabled = false;
reStartButton.disabled = false;
}
}
function startRecording() {
statusV.innerText = '开始录制';
//todo：显示录制中 提示
recordedBlobs = [];
var options = {mimeType: 'video/webm;codecs=vp9'};
if (!MediaRecorder.isTypeSupported(options.mimeType)) {
console.log(options.mimeType + ' is not Supported');
options = {mimeType: 'video/webm;codecs=vp8'};
if (!MediaRecorder.isTypeSupported(options.mimeType)) {
console.log(options.mimeType + ' is not Supported');
options = {mimeType: 'video/webm'};
if (!MediaRecorder.isTypeSupported(options.mimeType)) {
console.log(options.mimeType + ' is not Supported');
options = {mimeType: ''};
}
}
}
try {
mediaRecorder = new MediaRecorder(window.stream, options);
} catch (e) {
console.error('Exception while creating MediaRecorder: ' + e);
alert('Exception while creating MediaRecorder: '
+ e + '. mimeType: ' + options.mimeType);
return;
}
// console.log('Created MediaRecorder', mediaRecorder, 'with options', options);
recordButton.textContent = '停止';
// playButton.disabled = true;
downloadButton.disabled = true;
reStartButton.disabled = true;
mediaRecorder.onstop = handleStop;
mediaRecorder.ondataavailable = handleDataAvailable;
mediaRecorder.start(10); // collect 10ms of data
// console.log('MediaRecorder started', mediaRecorder);
}
function stopRecording() {
statusV.innerText = '停止录像';
//影藏录制中提
mediaRecorder.stop();
console.log('Recorded Blobs: ', recordedBlobs);
//recordedVideo.controls = true;
}
// function play() {
// var superBuffer = new Blob(recordedBlobs, {type: 'video/mp4'});
// //recordedVideo.src = window.URL.createObjectURL(superBuffer);
// gumVideo.src = window.URL.createObjectURL(superBuffer);
// }
function download() {
var blob = new Blob(recordedBlobs, {type: 'video/mp4'});
var url = window.URL.createObjectURL(blob);
var a = document.createElement('a');
a.style.display = 'none';
a.href = url;
//文件名 通过方法传进来 检测是否合法？
a.download = '视频录像.mp4';
document.body.appendChild(a);
a.click();
setTimeout(function() {
document.body.removeChild(a);
window.URL.revokeObjectURL(url);
}, 100);
}
function upload(){
formData.append('nickName','Jack');//-->后台用req.body.nickName将值'Jack'取出
var blob = new Blob(recordedBlobs, {type: 'video/mp4'});
// var data = new FormData();
var data = new FormData();
data.append('file', file);
return uploadVideoFile(data).then(res => {
return this.recordVideoUrl = res.url;//获取上传的视频地址
})
// data.append('video', blob);
// data.append('qw', 123);
// data.append('question', 1);
// var formData = new FormData();
//
// formData.append("username", "Groucho");
// formData.append("accountnum", 123456); // 数字 123456 会被立即转换成字符串 "123456"
//
// // JavaScript file-like 对象
// var content = '<a id="a"><b id="b">hey!</b></a>';
// var blob = new Blob([content], { type: "text/xml"});
//
// formData.append("webmasterfile", blob);
//
// console.log(formData);
$.ajax({
type: "POST",
url: "/form/data",
data: data,
processData:false, // 告诉jquery不要处理发送的数据
contentType:false, // 告诉jquery不要设置content-Type请求头
success:function(msg){
console.log(msg);
}
});
}
function restartRecord(){
//清楚存留 按钮功能重置
recordButton.textContent = '录制';
playButton.disabled = true;
downloadButton.disabled = true;
reStartButton.disabled = true;
//handleSuccess();
navigator.mediaDevices.getUserMedia(constraints).
then(handleSuccess).catch(handleError);
// statusV.innerText = '准备阶段';
}
</script>
</body>
</html>
打开电脑摄像头