While we design the engine of product demo video, we do not exclude the status quo agent such as Claude Code CLI which are very powerful. I personally often ask Claude to apply the Fluxcut plugin (https://github.com/Flux-AI-Agent/fluxcut-plugin) to come out an initial version of the product demo quickly. Then I can tweak those parts that requires further improvement. This practice makes creating product demo videos so easy and so much fun!