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MediaTrackSettings: suppressLocalAudioPlayback property - Web APIs | MDN
The value of suppressLocalAudioPlayback is a boolean — true enables local audio playback suppression, and false disables it.
The below function sets up the constraints object specifying the options for the call to getDisplayMedia()suppressLocalAudioPlayback constraint (requesting that captured audio is not played out of the user's local speakers) only if it is known to be supported by the browser. Capturing is then started by calling getDisplayMedia() and attaching the returned stream to the video element referenced by the variable videoElem.
async function capture() {
const supportedConstraints = navigator.mediaDevices.getSupportedConstraints();
const displayMediaOptions = {
audio: {},
};
if (supportedConstraints.suppressLocalAudioPlayback) {
displayMediaOptions.audio.suppressLocalAudioPlayback = true;
}
try {
videoElem.srcObject =
await navigator.mediaDevices.getDisplayMedia(displayMediaOptions);
} catch (err) {
/* handle the error */
}
}
