Can Remotion be used for live streaming?

Remotion is not designed for broadcasting. It's use case is to render fixed-length videos which content is deterministic from start to end.

Live streaming requires a different approach. Content is not known in advance, being able to react to events is often necessary, the video is not fixed-length and broadcasting is extremely performance sensitive, with all frames needing to be rendered in real-time.

Remotion declarative approach based on browser APIs is not suitable for this use case.

For streamers wanting to leverage web technologies in their livestream, we recommend that they build a web app with transparent background and add it as a browser source to OBS.

You may create stinger transitions for OBS with Remotion, see an example here.

If you want to create live streams programmatically with React, we recommend Live Compositor from our friends at Software Mansion.