Kamera dan mikrofon pengguna dapat diakses di platform web dengan Media Capture and Streams API. Metode getUserMedia()
meminta pengguna mengakses kamera dan/atau mikrofon untuk merekam sebagai streaming media. Streaming ini kemudian dapat direkam dengan MediaRecorder API atau dibagikan kepada orang lain melalui jaringan. Rekaman dapat disimpan ke file lokal melalui metode showOpenFilePicker()
.
Contoh di bawah menunjukkan cara merekam audio dari mikrofon pengguna dalam format WebM dan menyimpan rekaman ke sistem file pengguna.
let stream;
let recorder;
startMicrophoneButton.addEventListener("click", async () => {
// Prompt the user to use their microphone.
stream = await navigator.mediaDevices.getUserMedia({ audio: true });
recorder = new MediaRecorder(stream);
});
stopMicrophoneButton.addEventListener("click", () => {
// Stop the stream.
stream.getTracks().forEach(track => track.stop());
});
startRecordButton.addEventListener("click", async () => {
// For the sake of more legible code, this sample only uses the
// `showSaveFilePicker()` method. In production, you need to
// cater for browsers that don't support this method, as
// outlined in https://web.dev/patterns/files/save-a-file/.
// Prompt the user to choose where to save the recording file.
const suggestedName = "microphone-recording.webm";
const handle = await window.showSaveFilePicker({ suggestedName });
const writable = await handle.createWritable();
// Start recording.
recorder.start();
recorder.addEventListener("dataavailable", async (event) => {
// Write chunks to the file.
await writable.write(event.data);
if (recorder.state === "inactive") {
// Close the file when the recording stops.
await writable.close();
}
});
});
stopRecordButton.addEventListener("click", () => {
// Stop the recording.
recorder.stop();
});
Dukungan browser
MediaDevices.getUserMedia()
API MediaRecorder
showSaveFilePicker() pada File System Access API
Bacaan lebih lanjut
- Spesifikasi Pengambilan Media dan Streaming W3C
- Spesifikasi Perekaman MediaStream W3C
- Spesifikasi Akses Sistem File WICG