如何在opentok中添加自定义视频

<script src="https://static.opentok.com/v2/js/opentok.min.js"></script>

var apiKey = 'YOUR_API_KEY';
var sessionId = 'YOUR_SESSION_ID';
var token = 'YOUR_TOKEN';

var session = OT.initSession(apiKey, sessionId);
session.connect(token, function(error) {
  if (error) {
    console.log('Error connecting to session:', error.message);
  } else {
    console.log('Connected to session');
  }
});

var publisher = OT.initPublisher('publisher-container', {
  insertMode: 'append',
  width: '100%',
  height: '100%'
}, function(error) {
  if (error) {
    console.log('Error initializing publisher:', error.message);
  } else {
    console.log('Publisher initialized');
  }
});

session.publish(publisher, function(error) {
  if (error) {
    console.log('Error publishing:', error.message);
  } else {
    console.log('Published successfully');
  }
});

navigator.mediaDevices.getUserMedia({ video: true, audio: true })
  .then(function(stream) {
    publisher.setStream(stream);
  })
  .catch(function(error) {
    console.log('Error accessing media devices:', error.message);
  });