AI Subtitle Generator
Generate professional subtitles in minutes. Supports 98+ Languages — plus translation.
Why Choose CantoSub AI？
Optimized for multilingual accuracy and flexible export formats.
Understands slang, accents & language-switching
Handles slang, mixed-language speech, and reduces mistranslations. One-click conversion to written language.
Custom Vocabulary Database
Create custom vocabulary databases for brand names, proper nouns, and industry terms to improve recognition accuracy.
Multiple Export Formats, compatible with mainstream editing software
Export to .srt, .fcpxml, .txt formats. Compatible with Premiere Pro, Final Cut Pro, CapCut, and DaVinci Resolve.
CantoSub AI 2.0™
Advanced AI with contextual understanding for superior subtitle accuracy and speed.
Smart Captioning Experience Upgrade
Multilingual Speech-to-Text
Converts speech to natural written language.
LLM Translation More Accurate
Advanced AI translation with contextual accuracy.
Smart Sentence Segmentation
Automatically segments subtitles for optimal readability.
Start Generating Professional Subtitles Now
New users get a 30-minute free trial. No credit card required. Experience our AI subtitle service today!
Liminal AI - New AI Video Production Platform
Introducing our new AI video production platform with advanced creation tools.
Long-to-Short Video Converter
AI automatically edits long videos into popular short videos
AI Voice Translation
Smart voice dubbing and multi-language translation
Auto Editing
AI automatically edits into professional-grade videos
Frequently Asked Questions
We answer your most common questions.
What video formats are supported?
We support all major video formats (MP4, MOV, AVI, WMV, etc.) and audio formats (MP3, WAV, M4A, etc.).
How accurate are the subtitles?
We use the latest AI models, achieving high accuracy across major languages. For specialized terms, custom vocabulary can enhance precision.
How is usage calculated?
Usage is calculated by video duration. For example, a 30-minute video will use 30 minutes of your quota. Unused quota resets at the end of the month.
Can I try it out?
New users receive a 30-minute free trial upon registration to experience our service quality.
How can I improve accuracy?
For best results, use high-quality audio files. Minimize background noise, music, and silent segments.
Our Partners
Quality Companies We Collaborate With
Cloudbreakr
DotAI
