Viralkey

That's true.

Brainstorming's a fair way to use it — a lot of people run a few styles on the same track just to see directions they hadn't considered, then commit to one.

Thanks ～Welcome to try！

Appreciate it — shout if anything breaks.

That's the part we spent the most time on. However many cuts a clip runs through, the face holds — same person on every angle, every style change. No drift. It's the difference between a music video and a pile of unrelated clips, like you said. Worth flagging though: output caps at 15 seconds for now. Full length is in the queue, but I'm genuinely torn on what goes first — longer videos, or being able to keep talking to one video and revise it until it's right? Curious which one people here would actually want.

Depends what you're posting. For musicians it's usually the release cycle — one track, several visual takes, test which one lands before committing budget to a real shoot. For brands it's more about volume. There are 100+ style presets, so the same audio can look completely different across a month of posts without it feeling repetitive. What are you working on? Happy to be more specific.

Appreciate you taking a look. Feel free to drop the specifics here — happy to discuss in the open, others might have the same thoughts.

Both are on the list — no dates I want to promise yet, but they're not off the table.

Honest answer: it's less one hard problem and more that video models don't actually hear music. You hand one a track and it has no idea where the beat is, when the phrase turns, where the singer takes a breath. So everything that makes a music video feel like a music video has to be reconstructed outside the model and handed over in a language it does understand. That turned into three separate fights. Getting the body to move with the track rather than just near it. Getting motion and lip-sync to hold at the same time — either one alone is manageable, both together is where things fall apart. And keeping character and style locked while all of that is happening. Which is why most of the work ended up being prompt engineering. We're past 50,000 lines now, and it isn't 50,000 lines of "make it cinematic" — it's cinematography, directing, screenwriting, shot design, choreography, music analysis, written down as rules a model can follow. None of that came for free. Most of it we had to actually learn before we could encode it.

Ha, appreciate it 🙏

It doesn't key off drum hits alone — that's the short version. When a track has strong percussion the motion tends to follow the hits, but when it doesn't, the sync shifts to the breath and density of the track instead. Sparse acoustic material still gets something to hold onto. Subtle timing shifts are handled relative to tempo rather than as fixed offsets, so it adapts instead of drifting when the feel changes. Where it's honestly weaker is heavy rubato — if the performance floats well off the pulse, you'll notice.

This is exactly the reason we developed this product. If you're making YouTube videos, Story templates generally work better than beat-sync templates—they offer more narrative space. Viralkey also strongly supports publishing to short video platforms! If you encounter any strange issues, please let me know, and I'll read every comment here.

Oh, we don't do ambient coding—Viralkey makes music videos. You upload a song (or a photo, or both), and you get a multi-shot music video in about three minutes. Every shot is meticulously designed by us, indistinguishable from a high-budget music video! Our top priority is consistency. Most tools cause people to appear out of place in different shots, which is a disaster if you're making a series. We use a locking mechanism to ensure that the same person is in every shot.

That's the crowd we built it for. Let me know how it goes if you try it.