php - 录制视频和音频

Question

Fiddle

我跟着这个 fiddle 。它具有视频和音频捕获功能。但它不会让我录制视频并将其发送到 php 以使用 ffmpeg 进行进一步处理并保存。我想知道如何录制视频并将其发送到 php 并保存？

var btnVideoCapture = document.getElementById('btn-capture-video');
btnVideoCapture.addEventListener('click', showUserMedia, false);

var btnScreenshot = document.getElementById('btn-screenshot');
btnScreenshot.addEventListener('click', snapshot, false);

var btnStopVideo = document.getElementById('btn-stop-video');
btnStopVideo.addEventListener('click', stopUserMedia, false);

var onFailSoHard = function (e) {
    console.log('Reeeejected!', e);
};
var video = document.querySelector('video');
var canvas = document.querySelector('canvas');
var ctx = canvas.getContext('2d');
var localMediaStream = null;


function showUserMedia() {
    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
    if (navigator.getUserMedia) {
        navigator.getUserMedia({
            audio: true,
            video: true
        }, function (stream) {
            video.src = window.URL.createObjectURL(stream);
            video.controls = true;
            localMediaStream = stream;
        }, onFailSoHard);
        // console.log('Good to go!');
    } else {
        video.src = 'somevideo.webm'; // fallback.
        //console.log('getUserMedia() is not supported in your browser');
    }
}

function snapshot() {
    canvas.width = video.videoWidth;
    canvas.height = video.videoHeight;
    if (localMediaStream) {
        ctx.drawImage(video, 0, 0);
        // "image/webp" works in Chrome 18. In other browsers, this will fall back to image/png.
        document.querySelector('img').src = canvas.toDataURL('image/webp');
    }
}

function stopUserMedia() {
    video.pause();
    localMediaStream.stop();
    video.src = '';
}

Answer 1

您发布的代码仅访问网络摄像头并在 <video> 中显示视频流元素( showUserMedia() 函数)。它不会录制视频或将数据发布到网络服务器。

要录制视频(和音频)，您需要使用 Chrome(49+)和 Firefox(30+)现在支持的 Media Recorder API。两个浏览器都记录到 .webm并且您可以将文件发布到网络服务器以进行进一步处理。

This article详细介绍了规范，这里是 live demo + GitHub project .