An AI Instagram Reels Generator That Posts for You

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

200 free credits on signup · No credit card required

Built for Reels, Not Repurposed for It

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

Reddit story

AITA narrations are one of the most-saved content categories on Reels — viewers DM them to friends within minutes.

Tier list

Engineered for the "send this to ___" DM share that Reels weights heavier than likes.

Quiz

The answer-reveal pause forces a complete watch and gives viewers something to share with a specific friend.

Skit

POV scenes ride the relatable-content lane the Explore feed surfaces hardest.

Dialogue

Two-character chemistry produces the screenshot-and-share moments Reels' algorithm rewards.

Text messages

Vertical-native iMessage threads read fluently to the sound-off Reels viewer who hasn't tapped unmute yet.

Rant

High-energy single-character monologues land — but Reels rewards saves over rage, so this isn't the lead format.

The Posting Workflow

Connect your Instagram Business account once via the Meta Graph 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 sized for sound-off scroll, and uploads each finished Reel on your schedule. No daily logins, no per-video manual work, no exports to download.

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

Set It Up Once. Let It Run Forever.

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

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