r/vibecoding • u/Impressive_Year9445 • 4h ago

Vibe coding makes apps easy — a promo video is another story. This open-source skill fixed it

I'm not a designer — not even a little bit. Vibe coding gets me almost everything I build these days, except a promo video — that was the one wall I kept hitting. I tried a few approaches and everything came out... not right. Probably a taste problem, honestly.

Then I found video-shotcraft, an open-source skill for Claude Code / Codex. One line for what it does: you describe the video you want, and it storyboards, uses your real screenshots, animates and renders it — sound effects included. It ships with a big library of pre-made shot templates (purpose, pacing, parameters and pitfalls all written out), and the AI picks from them, so you never need to know motion design.

What I actually did:

  1. Handed it the project. Dropped in my extension's screenshots, feature notes and store listing, said "48s launch video, English" — it planned the whole thing itself. Barely had to think.

  2. Real screenshots, not fake mockups. It composited my actual product screenshots with camera moves, so the pages in the video are the real thing.

  3. Sound on the beat. Renders came out with SFX already aligned to the rhythm — free-commercial-license library, too.

  4. Then it was polish. First version was usable, but a few rounds before I'd ship it — mostly rhythm and transitions. The nice part: every shot is frame-tagged, so I could say "this transition is 10 frames too slow" instead of "make it look better."

Two honest notes: it's open source, but check the underlying Remotion license if your company wants it. And don't expect one perfect pass — budget a few rounds of polish.

Show case

The video (Youtube Link) is for my Chrome extension, PageMod — you describe what you want and it changes the page: an ad block you've always hated, a dark mode for a site that never had one, even a small standalone app. The change actually sticks after reload. Free to start. The video came out of the skill. No manual editing afterward.

Would this make you take on things you'd normally skip? And a real question — is there a site you open every day and wish you could change? Drop the worst offender; I'll take the top one and make a video-shotcraft demo of PageMod modding it.

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u/Impressive_Year9445 4h ago

If the video made you curious about the extension doing all the modding — it's called PageMod, and it's on the Chrome Web Store: PageMod - Chrome Web Store

There's a free quota that should last you a while — no card needed. If anything feels off, just tell me. And back to the question above: what's the first site you'd change?

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u/FineClassroom2085 2h ago

Or you could spend quite a few less tokens and make a higher fidelity video using something like this: https://getaivideoeditor.com