73 lines
2.3 KiB
HTML
73 lines
2.3 KiB
HTML
<html>
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<head>
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<script src="/dist/ffmpeg.dev.js"></script>
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<style>
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html, body {
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margin: 0;
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width: 100%;
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height: 100%
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}
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body {
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display: flex;
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flex-direction: column;
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align-items: center;
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}
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</style>
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</head>
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<body>
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<h3>Record video from webcam and transcode to mp4 (x264) and play!</h3>
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<div>
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<video id="webcam" width="320px" height="180px"></video>
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<video id="output-video" width="320px" height="180px" controls></video>
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</div>
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<button id="record" disabled>Start Recording</button>
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<p id="message"></p>
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<script>
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const { createFFmpeg, fetchFile } = FFmpeg;
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const ffmpeg = createFFmpeg({ log: true });
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const webcam = document.getElementById('webcam');
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const recordBtn = document.getElementById('record');
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const startRecording = () => {
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const rec = new MediaRecorder(webcam.srcObject);
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const chunks = [];
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recordBtn.textContent = 'Stop Recording';
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recordBtn.onclick = () => {
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rec.stop();
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recordBtn.textContent = 'Start Recording';
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recordBtn.onclick = startRecording;
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}
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rec.ondataavailable = e => chunks.push(e.data);
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rec.onstop = async () => {
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transcode(new Uint8Array(await (new Blob(chunks)).arrayBuffer()));
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};
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rec.start();
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};
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(async () => {
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webcam.srcObject = await navigator.mediaDevices.getUserMedia({ video: true, audio: true });
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await webcam.play();
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recordBtn.disabled = false;
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recordBtn.onclick = startRecording;
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})();
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const transcode = async (webcamData) => {
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const message = document.getElementById('message');
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const name = 'record.webm';
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message.innerHTML = 'Loading ffmpeg-core.js';
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await ffmpeg.load();
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message.innerHTML = 'Start transcoding';
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ffmpeg.FS('writeFile', name, await fetchFile(webcamData));
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await ffmpeg.run('-i', name, 'output.mp4');
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message.innerHTML = 'Complete transcoding';
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const data = ffmpeg.FS('readFile', 'output.mp4');
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const video = document.getElementById('output-video');
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video.src = URL.createObjectURL(new Blob([data.buffer], { type: 'video/mp4' }));
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}
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</script>
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</body>
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</html>
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