Records from the user's microphone with a live VU meter for input-level feedback. Resolves with an opus-in-webm File on browsers that support it (most), or m4a / ogg as a fallback. Useful for voice notes, comment threads, podcast intake forms, accessibility transcription workflows.
Max 60 seconds
Try it: grant microphone permission, click Record, watch the VU meter ride your input level. Click Stop to add the clip to the queue.
JavaScript API
uploader.openAudioCapture({
maxDurationSec: 60, // auto-stop mimeType: 'audio/webm;codecs=opus', // optional fileName: 'voice-note.webm' // optional
}).then(function (file) {
uploader.addFile(file);
});
Output formats by browser
- Chrome / Edge / Opera / Firefox:
audio/webm;codecs=opus - small, high-quality, universally re-decodable. - Safari:
audio/mp4 (m4a) - server-side transcoding only required for downstream consumers that don't speak m4a. - Custom: pass
mimeType to override the auto-pick.
Auto-transcribe recipe
Pipe the captured file straight into a transcription endpoint via taskComplete:
uploader.on('taskComplete', function (task, result) {
fetch('/api/transcribe', {
method: 'POST',
body: JSON.stringify({ fileGuid: result.fileGuid }),
headers: { 'Content-Type': 'application/json' }
}).then(function (r) { return r.json(); })
.then(function (txt) {
document.getElementById('transcriptOut').textContent = txt.text;
});
});