Product & UI · May 28, 2026

Turns out claude design is pretty good for short product demo videos if you add voiceover on top

Turns out claude design is pretty good for short product demo videos if you add voiceover on top by fermatf. Watch the product & ui video and visit the…

fermatfu/fermatf
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4 net upvotes on Reddit, checked Oct 15, 2026

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From the creator’s post · fermatf on Reddit
ive been using claude design for short animated videos, and product demos turned out to be a good fit. the animation alone is fine, but adding a voiceover and some background music is what made it actually feel like a real demo instead of just shapes moving around. the part that mattered most was priming claude design before the real prompt. i paste a short primer first that tells it to pace text for actual human reading speed and hold each beat a second or two after it lands. before i did that the text would flash by too fast to read. after, it just works. rough loop: 1. plan the scene in regular [claude.ai](http://claude.ai) first, let it push back on pacing 2. prime claude design with the pacing rules, then paste the real prompt 3. iterate until it looks right 4. ask claude in the same chat for a voiceover transcript matching the timing 5. add the voiceover and a background music track, export as mp4 full writeup with the actual primer prompt, the voiceover prompt and the…
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Video and prompt by fermatf. Original post ↗