Why This Works At All
Remotion renders video from React code. That single fact is the whole reason this workflow exists.
Most editing tools hide the video behind a timeline you drag around by hand. Remotion does the opposite. Every cut, caption, and transition is written as code, and code is something Claude can read and rewrite.
So when people say Claude is editing the video, what is really happening is Claude is editing the instructions that build the video. My read is that this distinction matters, because it tells you exactly where the AI is strong and where it falls apart.