Barbones stream-react test app won't render video

Developers Stream
1
  1. pnpm create vite (name the project stream, use react)
  2. cd to your project
  3. pnpm install
  4. pnpm add @cloudflare/stream-react
  5. Change app.tsx to
import { Stream } from "@cloudflare/stream-react";
import "./App.css";

function App() {
  const videoId = "VIDEO_ID" // I replace this with a videoID in my account
  return (
    <div className="App">
      <Stream controls src={videoId} />
    </div>
  );
}

export default App;

When I run this I can’t get anything to happen. No errors, no rendering of player, no nothing. I do see a console message [Debug] EmeEncryptionSchemePolyfill: Waiting to detect encryptionScheme support. (sdk-iframe-integration.fla9.latest.js, line 2)

Is the problem in my video ID? I’m copying it right out of my dashboard, and I do not require signed URLs.