AI caption and subtitle generator that adds captions to videos in seconds with no watermark
AI ad break detection for finished video
Stage
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Founded
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Based in
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Pricing model
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Paid
Pricing
Free: 30 minutes of captions per month, 1080p MP4 export up to 3 minutes, 8 caption styles, SRT/VTT/TXT downloads up to 30 minutes, free translation into 100+ languages. Pro: $6.99/month (limited-time price, normally $9.99) or $59/year, unlimited captions on videos up to 90 minutes, all 22 caption s
From $0.70 / €0.70 per hour of video. The rate depends on monthly volume, and the price per hour falls as volume grows.
Key features
Automatic speech transcription in 100 languages with automatic language detection
SRT, VTT and TXT subtitle file downloads
Free translation into 100+ languages
Copy caption style from screenshot functionality
Bilingual captions showing two languages simultaneously on Pro
Video processing entirely in browser with audio-only server transmission for privacy
Word-level timing synchronization for precise caption timing
Scene change and dark frame detection
Speech and silence analysis for natural breaks
SCTE-35, HLS, and VMAP marker output
Subtitles in SRT and WebVTT with 22-language translation
Confidence scoring for every break
S3, FTP, and HTTP integration for large libraries
HTTP API for file submission and results collection
Customizable break rules and presets by program length
Support for MP4, MOV, ProRes, and IMF package formats
What makes it different
Fastest among 10 tested caption tools, 6.7× faster than CapCut and 4.7× faster than VEED
Highest accuracy with 5.7% word error rate in October 2026 accuracy test of 8 caption tools
Video stays entirely private with only audio sent for transcription
Analyzes the actual video content rather than relying on title or genre
Provides confidence scores and detailed reasoning for every break to enable editorial review