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HTML打开摄像头录制视频并且保存

ZMXQQ233 2022-01-31 阅读 44

打开电脑摄像头实现视频录制,设置时间自动保存视频,保存到本机


<!DOCTYPE html>
<html>

<head>
    <title>video recoder</title>
    <script src="fileSaver.js"></script>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
</head>
<style>
    body{
        background-color:#EFEDEF;
    }
</style>
<body>
<article style="border:1px solid white;width:400px;height:400px;margin:0 auto;background-color:white;">

    <section class="experiment" style="width:320px; height:240px;border:1px solid green; margin:50px auto;">
        <div id="videos-container" style="width:320px; height:240px;">
        </div>
    </section>
    <section class="experiment" style="text-align:center;border:none; margin-top:20px;">
        <button id="openCamera">打开摄像头</button>
        <button id="start-recording" disabled>开始录制</button>
        <button id="save-recording" disabled>保存</button>
        <!--<a href="javascript:void(0)" οnclick="send()">发送</a>-->
    </section>
</article>
<script>
    var mediaStream;
    var recorderFile;
    var stopRecordCallback;
    var openBtn = document.getElementById("openCamera");
    var startBtn = document.getElementById("start-recording");
    var saveBtn = document.getElementById("save-recording");
    openBtn.onclick = function() {
        this.disabled = true;
        startBtn.disabled=false;
        openCamera();
    };

    startBtn.onclick = function() {
        this.disabled = true;
        startRecord();
    };

    saveBtn.onclick = function() {
        saver();

        // alert('Drop WebM file on Chrome or Firefox. Both can play entire file. VLC player or other players may not work.');
    };

    var mediaRecorder;
    var videosContainer = document.getElementById('videos-container');

    function openCamera(){
        var len = videosContainer.childNodes.length;
        for(var i=0;i<len;i++){
            videosContainer.removeChild(videosContainer.childNodes[i]);
        }

        var video = document.createElement('video');

        var videoWidth = 320;
        var videoHeight = 240;

        video.controls = false;
        video.muted = true;
        video.width = videoWidth;
        video.height = videoHeight;
        MediaUtils.getUserMedia(true, false, function (err, stream) {
            if (err) {
                throw err;
            } else {
                // 通过 MediaRecorder 记录获取到的媒体流
                console.log();
                mediaRecorder = new MediaRecorder(stream);
                mediaStream = stream;
                var chunks = [], startTime = 0;
                video.srcObject = stream;
                video.play();

                videosContainer.appendChild(video);
                mediaRecorder.ondataavailable = function(e) {
                    mediaRecorder.blobs.push(e.data);
                    chunks.push(e.data);
                };
                mediaRecorder.blobs = [];

                mediaRecorder.onstop = function (e) {
                    recorderFile = new Blob(chunks, { 'type' : mediaRecorder.mimeType });
                    chunks = [];
                    if (null != stopRecordCallback) {
                        stopRecordCallback();
                    }
                };
            }
        });
    }

    // 停止录制
    function stopRecord(callback) {
        stopRecordCallback = callback;
        // 终止录制器
        mediaRecorder.stop();
        // 关闭媒体流
        MediaUtils.closeStream(mediaStream);
    }

    var MediaUtils = {
        /**
         * 获取用户媒体设备(处理兼容的问题)
         * @param videoEnable {boolean} - 是否启用摄像头
         * @param audioEnable {boolean} - 是否启用麦克风
         * @param callback {Function} - 处理回调
         */
        getUserMedia: function (videoEnable, audioEnable, callback) {
            navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia
                || navigator.msGetUserMedia || window.getUserMedia;
            var constraints = {video: videoEnable, audio: audioEnable};
            if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
                navigator.mediaDevices.getUserMedia(constraints).then(function (stream) {
                    callback(false, stream);
                })['catch'](function(err) {
                    callback(err);
                });
            } else if (navigator.getUserMedia) {
                navigator.getUserMedia(constraints, function (stream) {
                    callback(false, stream);
                }, function (err) {
                    callback(err);
                });
            } else {
                callback(new Error('Not support userMedia'));
            }
        },

        /**
         * 关闭媒体流
         * @param stream {MediaStream} - 需要关闭的流
         */
        closeStream: function (stream) {
            if (typeof stream.stop === 'function') {
                stream.stop();
            }
            else {
                let trackList = [stream.getAudioTracks(), stream.getVideoTracks()];

                for (let i = 0; i < trackList.length; i++) {
                    let tracks = trackList[i];
                    if (tracks && tracks.length > 0) {
                        for (let j = 0; j < tracks.length; j++) {
                            let track = tracks[j];
                            if (typeof track.stop === 'function') {
                                track.stop();
                            }
                        }
                    }
                }
            }
        }
    };

    function startRecord() {
        mediaRecorder.start();
        setTimeout(function(){
            // 结束
            stopRecord(function() {
                alert("录制成功!");
                openBtn.disabled=false;
                saveBtn.disabled=false;
                //send();
            });
        }, 5000);
    }

    function saver(){
        var file = new File([recorderFile], 'msr-' + (new Date).toISOString().replace(/:|\./g, '-') + '.mp4', {
            type: 'video/mp4'
        });
        saveAs(file);
    }

    function send(){
        var file = new File([recorderFile], 'msr-' + (new Date).toISOString().replace(/:|\./g, '-') + '.mp4', {
            type: 'video/mp4'
        });
        var data = new FormData();
        data.append("username", "test");
        data.append("userfile", file);

        var req = new XMLHttpRequest();
        req.open("POST", "com.spinsoft.bip.frame.utils.image.saveMp4.biz.ext");
        req.send(data);
    }

</script>

</body>

</html>

打开电脑摄像头实现视频录制,设置时间自动保存视频,保存到本机
在这里插入图片描述

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