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Add microphone input to tabcapture sample for crbug/1400269

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Oliver Dunk
2023-11-13 11:31:34 +00:00
parent 9aaa5ca358
commit 9ee3bb917b
1 changed files with 16 additions and 1 deletions
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17
functional-samples/sample.tabcapture-recorder/offscreen.js
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@@ -56,7 +56,22 @@ async function startRecording(streamId) {
source.connect(output.destination);
// Start recording.
recorder = new MediaRecorder(media, { mimeType: 'video/webm' });
const microphone = await navigator.mediaDevices.getUserMedia({
audio: { echoCancellation: false }
});
const mixedContext = new AudioContext();
const mixedDest = mixedContext.createMediaStreamDestination();
mixedContext.createMediaStreamSource(microphone).connect(mixedDest);
mixedContext.createMediaStreamSource(media).connect(mixedDest);
const combinedStream = new MediaStream([
media.getVideoTracks()[0],
mixedDest.stream.getTracks()[0]
]);
recorder = new MediaRecorder(combinedStream, { mimeType: 'video/webm' });
recorder.ondataavailable = (event) => data.push(event.data);
recorder.onstop = () => {
const blob = new Blob(data, { type: 'video/webm' });