An AI TikTok Video Generator That Posts for You

Mediasynth generates, captions, and publishes TikToks on your schedule across seven character-driven formats built for the FYP dynamics TikTok actually rewards. Set up a premise once, ship daily TikToks forever.

200 free credits on signup · No credit card required

Built for the FYP, Not Repurposed for It

Most "AI TikTok generator" tools are horizontal video editors with a vertical export option. Mediasynth's seven formats are vertical-first and tuned to the comment-and-share dynamics TikTok ranks for.

Skit

POV scenes and recurring character bits drive the share-with-a-friend dynamic that TikTok's FYP rewards.

Tier list

Engineered for "but you forgot ___" comments, which TikTok counts as engagement and ranks for.

Reddit story

AITA / TIFU narrations sit in the most-watched genre on TikTok. Hook-front-loaded by design.

Text messages

Vertical-native iMessage conversations that read fluently on a phone-held-vertical viewer.

Dialogue

Two characters debating a take cuts the talking-head fatigue that kills TikTok retention.

Rant

High-energy single-character monologues optimized for the 3-second hook window TikTok demands.

Quiz

Forces the watch-to-end pause for the answer reveal — TikTok's algorithm reads that as a complete view.

The Posting Workflow

Connect your TikTok account once via the official TikTok content posting API. Define a premise — the topic source, character cast, format mix, and posting cadence. From there, Mediasynth writes scripts, generates voices and animations, syncs word-level captions optimized for TikTok's caption position, and uploads each finished TikTok on your schedule.

The same premise also publishes to YouTube Shorts, Instagram Reels, and Facebook Reels from the same render. One premise, four platforms, on schedule — including TikTok's specific metadata, caption, and hashtag conventions.

Set It Up Once. Let It Run Forever.

Start with 200 free credits. No credit card required. No daily work.

Join the community on Discord