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Render Video

It all comes down to this. All the setup so far has been done so that we can show live streaming video in our beautiful apps.

  1. First, you need to get all the peers in the room. You can use the selectPeers selector for this.

  2. Next, you'll need to have a reference to a video element. You must add the attributes as present below.

<video autoplay muted playsinline />
  1. You can then iterate over all the peers, and call the attachVideo function in hmsActions to render the video.
import { hmsActions } from './hms'; const peersContainer = document.getElementById('peers-container'); function renderVideo(peer) { // you can either get an existing video element or create a new onw. // const videoElement = document.getElementByID(peer.id) const videoElement = document.createElement('video'); videoElement.autoplay = true; videoElement.muted = true; videoElement.playsinline = true; hmsActions.attachVideo(peer.videoTrack, videoElement); } function renderPeers(peers) { peersContainer = document.getElementById('peers-container'); peersContainer.innerHTML = ''; peers.forEach((peer) => { console.log( `rendering video for peer - ${peer.name}, roleName - ${peer.roleName}, isLocal- ${peer.isLocal}` ); peersContainer.append(renderVideo(peer)); }); } // subscribe to the peers, so render is called whenever there is a change like peer join and leave hmsStore.subscribe(renderPeers, selectPeers);

The videos will now be rendered & start playing on your screen. 🥳

In case you want to render local peer and remote peers separately, you can use the selectors - selectLocalPeer and selectRemotePeers.

Detach video to conserve bandwidth and cleanup elements

You can call detachVideo on the hmsActions to unsubscribe a track and not fetch it's data. This can be done for example when a video goes out of view. This should also be called when the component is going to be unmounted for proper cleanups of the video elements.

Note that if you're using the useVideo hook from react-sdk this is already being taken care of.

hmsActions.detachVideo(videoTrack.id, videoElement);