[Solved]-How can I define the type for a <video> reference in React using Typescript?-Reactjs

To set the type for the ref, you set the type like this: useRef<HTMLVideoElement>(). Then, to handle the fact that the object is possibly null (since it's null or undefined before the component is mounted!), you can just check whether it exists.

const App = () => {
  const video = useRef<HTMLVideoElement>();
  const playVideo = (event: any) => {
    video.current && video.current.play();
  };

  return (
    <div className="App">
      <video ref={video} loop src={bike} />
    </div>
  );
};