Purpose-built for 9:16 vertical. Paste a link, pick a platform, post a hook-first short in minutes.
100,000+ videos generated
by creators worldwide
Who it is for
Built for the teams shipping short-form every week.
Four distinct workflows, one canvas. You do not have to be a full-time editor to ship at the cadence the feed rewards.
Solo creators and indie video teams
If you post three or more vertical videos a week, the bottleneck is not ideas — it is editing time. ShortGenius collapses the 45-minute CapCut round trip into a four-minute render so you protect creative attention for the hook and the thumbnail. Content-agency side-hustlers typically get back 8–12 hours a week.
SMB marketers
Running social for a five-person startup means you are the strategist, the editor, and the media buyer. The AI TikTok video generator lets you ship a full week of Reels in one sitting, batch three A/B hooks against every launch, and keep the calendar fed without hiring.
Performance agencies
Agencies running paid social for ten to thirty brands need a short-form assembly line that stays on-brand. ShortGenius batches variant generation and exposes export presets for TikTok, YouTube Shorts, Instagram Reels, X, and Facebook — ready to schedule and cross-post from the app.
E-commerce and DTC teams
If you live in Shopify, paste the product URL and the generator pulls price, copy, and imagery in one pass. The AI Reels generator writes five product-aware hook variants tuned for the DTC feed — pain-point, unboxing, stat-lead, before/after, and curiosity. Ship a new creative test every week without another UGC shoot booking.
Feature deep-dives
Purpose-built for short-form — not a 16:9 tool squeezed into a vertical frame.
Vertical-first. Hook-first. Ad-ready-first. Three chapters on what that actually means.
9:16-native templates
Every ShortGenius template is designed in vertical 9:16 first. Captions are burned at TikTok-safe positions, lower-thirds dodge the Shorts shop tray, and pacing is measured in beats per second instead of slide transitions. Export 1:1 and 16:9 from the same project when you need cross-placement coverage for Meta Reels or YouTube Shorts — without re-editing.
Most AI video tools started life as 16:9 explainer engines. When you drop a TikTok brief into those tools you manually reframe every scene, re-time every caption, and re-cut every hook to fit the vertical reality. That is the workflow this tool replaces — vertical is the native canvas, not an afterthought retrofitted onto a widescreen editor.
How to generate a short-form video with ShortGenius
Five steps, roughly four minutes of your time, and a finished vertical video tuned for TikTok, Reels, or Shorts.
- 1
Drop in your product, link, or topic
Paste a product URL, a Shopify SKU, a TikTok reference video, or a rough topic like "protein bar review". ShortGenius reads the source, pulls visuals, and returns a full short-form brief in about 15 seconds — no blank page, no script-from-scratch nightmare.
- 2
Pick TikTok, Reels, or Shorts
Choose the platform preset. Each preset locks the aspect ratio to native vertical 9:16, applies the right safe-zone so captions never collide with the platform UI, and targets the duration sweet spot — 21–34s for TikTok, 30–60s for Reels, 15–45s for Shorts.
- 3
Let the AI write a hook-heavy opener
The AI short-form video generator drafts five hook variants in your chosen voice — pattern interrupt, pain-point call-out, stat-lead, curiosity gap, and direct question. Pick one, tweak it, or regenerate. Hook strength is the single biggest driver of 3-second retention, so this step gets its own pass.
- 4
Layer trending audio and auto-captions
Match a trending sound from the built-in library (licensed for commercial use on each platform) or clone a reference track. Auto-captions run at word level with animated highlight styles — the same burned-in subtitle look that dominates every Reels and Shorts feed in 2026.
- 5
Render and export ready to post
ShortGenius renders in under two minutes at 1080×1920 with per-platform bitrate targets. Download the MP4, push straight to TikTok/Reels/Shorts via the scheduler, or duplicate the project to A/B test five variants before you commit spend.
One-click TikTok, Reels, and Shorts presets
Pick the platform; the canvas locks the aspect ratio, safe-zone, caption position, and duration target for you. TikTok gets the 21–34s sweet spot and bottom-third karaoke captions. Reels ships in 30–60s with animated word pops. Shorts lands in 15–45s with a safe margin for the green progress bar. Codec, bitrate, and frame rate match every spec at export.
Native scheduling extends the same logic: TikTok, YouTube, X/Twitter, Facebook, and Instagram each get a pre-validated MP4 with captions already burned in. No re-encode, no "format not supported" error at upload, no manual crop pass for a second placement.
Hook-first composition
Hook strength is the single biggest driver of 3-second retention in 2026. ShortGenius drafts five hook variants per project — pattern interrupt, pain-point call-out, stat-lead, curiosity gap, and direct question — tuned for the first 1.2 seconds where the feed decides whether to keep watching. Pick one, tweak it, or regenerate until the opener snaps.
The pacing engine behind the hook carries through the rest of the cut: cuts every 1.2–1.8 seconds on the opener, word-level caption highlights synced to stressed syllables, and B-roll that arrives on the beat of the trending audio track. That is why a ShortGenius render reads like a creator made it, not like a training video wearing a phone-shaped crop.
The short-form features that actually move retention.
Every feature below exists because it meaningfully shifts a real short-form metric — 3-second retention, watch time, CTR, or cost-per-install. No busy-work surface area.
AI hook generation
Five hook variants per project in five styles — pattern interrupt, pain-point, stat-lead, curiosity gap, and direct question — tuned for the first 1.2 seconds.
Trending-audio library
Weekly-refreshed library of cleared-for-commercial-use tracks, filtered by platform, region, and vertical. Tagged by use case so you don't pick a wedding sound for a fintech ad.
Word-level animated captions
Karaoke bounce, pop-in, single-word, three-word block, and four more highlight styles. Brand-aware colours, custom fonts, typo-proof auto-punctuation.
Voice cloning and 40+ languages
Clone a narrator voice from a 30-second reference, or pick from native voices in 40+ languages. Localised short-form out-performs translated-subtitle-only across every region we've measured.
Batch variant generation
Generate 10 hook × 3 body × 2 CTA combinations in a single job. Ship them into a paid-social creative test the same afternoon.
Social scheduling
Codec, bitrate, and aspect ratio hit every target spec — TikTok, YouTube, X/Twitter, Facebook, Instagram. No re-encode, no "format not supported" error at upload.
Free to start. Scale when your feed scales.
Render short-form videos on the free tier without a credit card. Upgrade when you need 60 variants a month, 4K export, and bulk ad testing.
Free
$0/month
- 3 videos / month, watermark-free preview
- Native 9:16 vertical, TikTok/Reels/Shorts presets
- Hook-first AI script engine + word-level captions
- Trending audio library, no credit card required
Pro
$69/month
- 60 watermark-free renders per month
- 4K export, voice cloning, UGC avatars
- Bulk variant generation (10 hooks × 3 bodies × 2 CTAs)
- Cross-post to TikTok, Meta, YouTube, X, and Instagram
Pricing last verified 2026-04-17. Free tier: 3 videos / month, watermark-free preview.
Ship your next TikTok, Reel, or Short in four minutes.
Native 9:16 vertical, hook-heavy, trending-audio ready — the short-form canvas your feed has been waiting for.
No credit card required.
Keep going
Running paid media on top of organic short-form? The AI video ad generator layers hook-first script variants, UTM-aware CTAs, and creative-testing batches onto the same vertical canvas — so a winning organic hook can be promoted to paid without another production cycle.
If your feed leans on creator-voice UGC reads, the UGC video generator is the format that owns paid-social click-through in 2026. Same short-form engine, different actor library — selfie-cam framing, handheld-look B-roll, product-in-hand angles.
Need concept fuel? Our TikTok ad ideas for 2026 round-up ships 40 hook-first concepts that worked in the last 90 days — with the script, the B-roll notes, and the platform preset to clone each one.
AI short-form video generator — FAQ
An AI short-form video generator turns a prompt, product link, or long video into a finished vertical clip sized for TikTok, Instagram Reels, and YouTube Shorts. ShortGenius handles the hook, script, voiceover, captions, cuts, and trending audio in one pass so you skip the storyboard, the editor, and the round-trip export.
Try ShortGenius free
Ship three AI short-form videos this week on the free plan. No credit card, no forced watermark on preview, and a canvas designed for vertical feeds from the first frame.
No credit card required.