MediaStream: removeTrack() メソッド

removeTrack(track)

let initialStream = null;
let newStream = null;

let fetchStreamButton = document.getElementById("fetchStream");
let removeTracksButton = document.getElementById("removeTracks");

async function fetchStreamFunction() {
  initialStream = await navigator.mediaDevices.getUserMedia({
    video: { width: 620, height: 310 },
    audio: true,
  });
  if (initialStream) {
    await attachToDOM(initialStream);
  }
}

async function attachToDOM(stream) {
  newStream = new MediaStream(stream.getTracks());
  document.querySelector("video").srcObject = newStream;
}

async function removeTracksFunction() {
  let videoTrack = newStream.getVideoTracks()[0];
  let audioTrack = newStream.getAudioTracks()[0];

  newStream.removeTrack(videoTrack);
  newStream.removeTrack(audioTrack);

  // ストリームが空になる
  console.log(newStream.getTracks());
}

fetchStreamButton.addEventListener("click", fetchStreamFunction);
removeTracksButton.addEventListener("click", removeTracksFunction);