I'm making a code that uses Node.js and React to concatenate multiple videos into one video.

I want to record several videos on a webcam, concat them, and save them on the server.

1. Can I concatenate several videos on the web(client)?

• I tried ffmpeg, but Fluent_ffmpeg.mergeToFile saved the file directly locally, so I haven't used it in React.

2. If it becomes a concat, will it be temporarily saved on the react web? Or do I save it on the server right away?