[_hl_]

manim works by generating a "partial movie file" for each animation, i.e. a single mp4 file for each scene.wait() call and so on. The final output just stitches these together.

I did exactly what you want using a small reveal.js plugin that parses the list of partial files generated by manim and inserts the corresponding video files into the presentation in thst order, it worked quite well. Let me know if you're interested and I'll throw it up on a GitHub gist.