Turn Long Videos into Viral Shorts with AI
Upload any long-form video and our AI automatically finds the most engaging moments, reframes to 9:16, adds styled subtitles, and delivers ready-to-publish Shorts, Reels, and TikToks.
How It Works
End-to-end pipeline from upload to publish-ready vertical videos
Smart Upload & Validation
Drag & drop large videos (up to 500MB). Automatic format validation, metadata extraction, and corruption detection.
- MP4, MOV, MKV, WebM support
- ffprobe metadata extraction
- Duration, resolution, codec detection
AI Transcription with Timestamps
Powered by faster-whisper for accurate, word-level timestamps. Supports 99+ languages with auto-detection.
- Word-level timestamps
- Language auto-detection (id, en + more)
- Sentence & segment boundaries
Multi-Signal Moment Detection
Not random cuts. AI scores moments on hook strength, information density, emotion, curiosity gaps, completeness, and niche relevance.
- Hook, info, emotion, curiosity scoring
- Niche-specific profiles (30+ niches)
- Scene detection + silence boundaries
Vertical 9:16 Reframing
Auto crop to 1080x1920 with center, face-aware, and speaker-aware strategies. Perfect for Shorts, Reels, TikTok.
- 1080x1920 output (configurable)
- Center / face-aware crop modes
- Split-screen podcast layout
Burned-In Styled Subtitles
ASS-powered subtitle rendering with 5 presets. Word-level highlighting, karaoke effects, creator styles.
- Clean, Bold, Karaoke, Minimal, Creator
- Word-level highlight sync
- Font, color, position customization
Real-Time Progress & History
Live stage-by-stage progress (transcription → moments → rendering). Full project history with search, filters, and re-render.
- Stage-level progress tracking
- Project history & statistics
- One-click re-render & download
The Complete Pipeline
Every stage runs for real - no fake progress bars
Upload
Video file received & validated
Metadata
ffprobe extracts duration, resolution, codec
Audio
FFmpeg extracts 16kHz mono WAV
Transcribe
faster-whisper generates word timestamps
Segments
Sentences & boundaries from transcript
Scenes
PySceneDetect finds visual cuts
Moments
Multi-signal AI scoring & ranking
Clips
Best moments selected & boundaries optimized
Reframe
9:16 crop (center/face-aware)
Subtitles
ASS generation & style application
Render
FFmpeg composites final MP4
Ready
Preview & download in browser
Ready to Create Your First Short?
Upload a video, pick your settings, and let AI do the rest. Free to start, no credit card required.
Start Free