Don't copy. Riff.

Turn winning TikToks into yours.

Riffkit works out why a video won — the hook, the pacing, the emotional beats — and rebuilds that formula as an original video: your product, your character, your language. Minutes, in your browser or from your AI agent.

Sign up free — no credit card required.

riff · 9:16
riff · 9:16
riff · 9:16

Formula, not footage

The output is an original video — new footage, your story.

Agent-ready

Use it hands-on in your browser, or tell your AI assistant to riff one.

Minutes, not weeks

A riff renders in minutes — not the days a creator needs.

See it

The same formula. A completely new video.

Viewers remember how a video made them feel — curiosity, tension, payoff — not its footage. Riffkit extracts that path and rebuilds it as yours: a new niche, your product, another language, even a different visual style.

Any visual style, any structure — live-action, cartoon, or game-CG; split-screen, picture-in-picture, and grids rebuilt with the source's cut rhythm and transitions intact, not flattened into one static shot.

Cross-niche transfer

  1. Hook "Only tried it to prove it wrong" — the skeptic
  2. Turn "…now I'm hooked" — the convert
  3. Payoff Show the result, then dare you back

A skeptic out to debunk it, won over — you stay for the proof.

Riffed from skeptic beauty review

Mobile-game ad

Your product, woven in

  1. Hook Aspirational caption, fast-cut montage
  2. Turn Polished fragments on the beat
  3. Payoff The rhythm is the payoff

Constant novelty keeps the eye to the end.

Riffed from aspirational lifestyle montage

Your drink, woven in

Localized

  1. Hook "Remember this" — one quick rule
  2. Turn Each rule confirmed: yes / no
  3. Payoff Clean do / don't rules to save

A spoken rule + on-screen yes/no is effortless to re-voice.

Riffed from on-camera styling tips

Native Spanish version

Any visual style

  1. Hook A plain, unstyled "before"
  2. Turn One hard cut on the beat
  3. Payoff The styled "after" reveal

The transition is the hook — you stay for the reveal.

Riffed from live-action transition

Game-CG remake

Original footage, your rights — Riffkit never re-uploads the source clip.

Who it's for

Built for the way you ship short video.

TikTok & Meta ads

UGC ad creative at the speed of testing.

Turn winning ad structures into branded creatives — your product shot or app screen woven in — batched so the testing engine never runs dry.

TikTok Shop & affiliate

Same product, 100 winning angles — this month.

Batch riffs off proven formats, clear the algorithm threshold, then double down on the winners.

Digital-human UGC accounts

One persona, every video, posting daily.

Lock a character, riff proven formats on a daily cadence, and monetize the account — the consistency faceless-channel tools get wrong.

How it works

From a link to your video in three steps.

01

Drop a banger

Paste a TikTok link, upload a video — or start from a proven template in the library.

02

We extract the formula

Hook, pacing, emotional journey, scene structure — the machine under the footage.

03

Riff it

Your version renders in minutes — your domain, your product, your character.

What you get

A post-ready video — not a rough clip.

Your product, woven in

Your SKU — a physical item or an app screen — built into the story the formula calls for.

A consistent character

Lock one persona so every riff keeps the same face and voice. Or use Auto — no avatar needed.

Multi-language localization

Generates natively in English and Spanish — native phrasing and the right fonts, not a translated subtitle on top.

Ready to post

Each riff ships with a caption, hashtags, and a cover frame. Download and publish.

The math

One winning video, three ways to get it.

Option Per video Turnaround
Riffkit $8–9.9 Minutes
Freelance creator $99–198 5–14 days
UGC agency $150–300 1–2 weeks

Effective per-video price on a plan (from $99/mo), assuming a typical 15-second 720p video. Billed by the second, so a 9-second riff costs just 9 seconds.

Cancel anytime · full commercial rights to everything you make.

Sign up free — no credit card required.

The craft

Why these don't read as AI.

The tells that give AI video away — captions that drift or render as garbled boxes, beats off the cut, music burying the voice — are exactly the parts we obsess over.

We tune the timing — not guess it

The original's beats, drops, and pauses are mapped and rebuilt, so the rhythm that hooked viewers comes through in your version.

Captions that track the voiceover

We re-time each caption to the spoken audio so the words land with it — tight, not the lag that makes AI video read as fake — and burn them in crisp and legible, no garbled boxes.

Music that gets out of the way

The background track ducks under your voiceover and rises in the gaps, so the talking comes through — mixed automatically, no editor needed. Bring your own or a licensed track anytime.

Two ways in

The only riff engine your agent can run end to end.

Riffkit is hands-on in your browser and installable as a skill your AI assistant can call. Click through it yourself, or just tell your agent to riff one.

In your browser

The full studio — pick a source, character, product, and language, then watch riffs render in minutes. Made for hands-on control.

From your AI agent

Install the Riffkit skill, connect it once, and your assistant riffs on command — say “riff this TikTok for my product in Spanish” and it returns a post-ready video. A teammate that ships finished short-form, not just drafts.

Watch an agent riff end to end →

Questions

The things people ask first.

Isn’t this just copying — and is it safe?

No, and yes. Riffkit never re-uploads the source clip — it studies the structure (the hook, the pacing, the beats) and generates completely new footage with your story, product, and character. Nothing of the original's visuals ends up in your video, and you bring the product and soundtrack, so the rights to what you publish stay yours. Don't copy. Riff.

Do TikTok and Meta allow AI-generated videos?

Yes — AI-made video runs as organic posts and paid ads on both platforms. The one requirement: if a video features realistic AI-generated people, tag it with the platform’s built-in AI-content label when you upload. Every riff is original footage you own, so it goes through the same ad review as any other creative.

Can I put my own product in the video?

Yes — that's the point. Add your product image, whether it's a physical item or a screen from your app, and Riffkit weaves it into the story the formula calls for, instead of slapping it onto a generic stock avatar. The winning emotional journey gets rebuilt around what you're actually selling.

Who appears in my videos?

A consistent character you design — not a clone of your own face. Upload any avatar and write a persona, and that same character stars across all your riffs, so your channel keeps one recognizable face and voice. Prefer not to manage a character? Use Auto mode and the model generates the cast for you.

Will a series of riffs feel like one account?

Lock the same character and product across riffs and the series keeps one recognizable face, voice, and cast — while each video’s footage is generated fresh. Consistent enough to read as one channel, varied enough not to repeat itself.

Can I make videos in other languages?

Yes — Riffkit generates natively in English and Spanish. Each is tuned individually: native phrasing, the right fonts, and captions aligned to the spoken audio. Real localization, not a translated caption layered on top.

Do the videos come with subtitles?

Yes — captions are burned into the video and track the voiceover, so the words land with the audio instead of drifting the way auto-captions usually do.

Can my AI agent make videos with Riffkit?

Yes. Riffkit installs as a skill your AI assistant can use — connect it once, then tell your agent to riff a video and it drives the whole pipeline for you. Same engine and the same post-ready output as the app.

Can I change the result?

Yes. Steer each riff with a creative direction, swap the product or character, or re-run with a new angle. Because a riff is billed by the second — a few dollars, not a paid re-shoot — dialing in the version you want is fast and cheap, so you re-roll until it's right rather than waiting days on a redo.

How many videos can I get from one source?

As many as you want — the formula is reusable. Re-riff the same source with different creative directions, products, or characters, and each run generates fresh footage, so one proven structure becomes a batch of distinct videos instead of the same clip exported ten times.

Can I use the videos commercially?

Yes — everything you make is yours to post, run as ads, and monetize, with no extra license or revenue share from us.

Riff it.

Your first riff in minutes — from $8 a 720p video on a plan, billed by the second, cancel anytime.

Sign up free — no credit card required.

Riffkit - Turn winning TikToks into your own — same formula, new story | Product Hunt