SRT Subtitle Generator
for Mac — 100% Offline
Drop any video file into Vosuba. Get a perfectly timed SRT file in seconds — powered by OpenAI Whisper, running locally on your Mac. No cloud upload, no per-minute fees, no watermark.
How to generate SRT files with Vosuba
Import your video or audio
Drag and drop any file — MP4, MOV, MKV, AVI, MP3, WAV, or M4A. Vosuba handles the format conversion automatically via FFmpeg.
Run AI transcription
Click Transcribe. OpenAI's Whisper model runs locally on your Apple Silicon chip — no internet required, no data leaves your machine. Supports 99 languages.
Edit in the timeline
Review and refine every segment in the built-in editor. Fix misheard words, adjust timing, split or merge segments. Changes are reflected in real-time on the video preview.
Export SRT (or VTT / ASS)
Click Export and choose your format. The file is immediately ready to upload to YouTube Studio, import into Premiere Pro, or distribute alongside your video.
Export formats
Vosuba exports all three major subtitle formats from a single project.
SRT (SubRip Text)
The universal standard. Works with YouTube, Vimeo, Facebook, Premiere Pro, Final Cut Pro, and virtually every video player and platform.
VTT (WebVTT)
The web-native format. Used by HTML5 video players, web-based LMS platforms, and streaming services. Supports styling hints and positioning.
ASS (Advanced SSA)
The professional format. Full typographic control — fonts, colours, positioning, and effects. Imports natively into DaVinci Resolve and Aegisub.
Works with your tools
SRT and VTT files from Vosuba import directly into:
Free vs paid
SRT generation is free and unlimited. Paid tiers unlock visual styling and advanced features.
Free
Unlimited AI transcription. SRT, VTT, ASS export. Edit in timeline. No watermark on text files. No account needed.
Creator — $49
All Whisper models. Styled visual captions with 10 presets. Burn subtitles into video. Sound detection (SDH). WCAG compliance dashboard.
Pro — $99
Everything in Creator + AI voiceover (26 neural voices), voice cloning, batch processing, and priority support.
Frequently asked questions
What is an SRT file?
SRT (SubRip Text) is the most widely supported subtitle format. It stores timed text segments with sequence numbers, timestamps, and caption text. SRT files can be uploaded to YouTube, Vimeo, and most social media platforms, or imported into video editors like Premiere Pro and DaVinci Resolve.
Is Vosuba's SRT generator really free?
Yes. The free tier of Vosuba includes unlimited AI transcription and SRT export — no watermark on text files, no per-minute fees, no account required. The paid tiers (Creator $49, Pro $99) add styled visual captions, burn-in, voiceover, and batch processing.
What video formats does the SRT generator support?
Vosuba accepts MP4, MOV, MKV, AVI, WEBM, and most other video and audio formats via FFmpeg. You can also import standalone audio files (MP3, WAV, M4A) to generate subtitle files from podcasts or voice recordings.
Can I generate SRT files for YouTube?
Yes. Vosuba exports standard .srt files that are directly compatible with YouTube Studio's subtitle upload feature. You can also export VTT files for web players or ASS files for professional editors like DaVinci Resolve and Final Cut Pro.
Generate your first SRT file in under a minute
Download Vosuba free. Drop a video. Export the subtitle file. No cloud, no account, no fees.