An AI Facebook Reels Generator That Posts for You

Mediasynth generates, captions, and publishes Facebook Reels on your schedule across 19 character-driven formats built for the share-to-friends-and-groups dynamics that drive reach on Facebook. Set up a premise once, ship daily Reels forever.

200 free credits on signup · No credit card required

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Built for the Facebook Audience, Not Repurposed for It

Most "AI Facebook Reels generator" tools are repurposed TikTok exports that miss what Facebook's audience actually shares. Mediasynth's 19 formats are vertical-first and tuned to the share-to-friends-and-Groups dynamics that drive Facebook reach.

Reddit story

AITA-style narrations land hardest with the 35+ Facebook Reels audience, who treat them like long-form drama.

Tier list

Nostalgia-tier rankings (90s shows, classic albums) are tailor-made share-bait for Facebook's older demo.

Quiz

Trivia is one of the highest-engagement content categories on Facebook full stop — Reels inherits that behavior.

Rant

Opinion content gets re-shared into Facebook Groups, where most discovery on the platform actually happens.

Dialogue

Two-character takes feel like the talk-radio format Facebook's audience already shares with friends.

Skit

Relatable scripted scenes work; the Facebook audience prefers grounded character bits over the ironic POVs that dominate TikTok.

Text messages

Plays cleanly on Reels but reads less native here than on the more mobile-first platforms.

The Posting Workflow

Connect a Facebook Page 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, and uploads each finished Reel directly to your Page 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 Instagram Reels from the same render. One premise, four platforms, on schedule — including Facebook's 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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