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Auto-Generate Subtitles & Captions

Upload a video and get SRT or VTT subtitles automatically. AI-powered subtitle generation in 100+ languages with 98%+ accuracy. Translate subtitles to 99 languages.

Generate Subtitles Free →

1. Upload Your Video

Upload a video file (MP4, MKV, MOV, WebM) or paste a YouTube, Vimeo, or any video URL.

2. AI Generates Subtitles

Our AI transcribes the audio and creates perfectly timed subtitles with speaker labels.

3. Download SRT or VTT

Export subtitles as SRT or VTT. Upload to YouTube, Vimeo, or burn into your video.

Subtitle Generation Features

SRT & VTT Export

Download subtitles in SRT or WebVTT format. Compatible with YouTube, Vimeo, WordPress, and all major video players.

Translate to 99 Languages

Automatically translate your subtitles into 99 languages. Reach global audiences with multilingual captions.

Paste Any URL

Paste a YouTube, TikTok, Vimeo, or any video URL. We extract existing captions or transcribe the audio.

Perfect Timing

AI-generated timestamps sync subtitles precisely with speech. No manual timing adjustments needed.

Supported Video Formats

MP4 MKV MOV WebM AVI MP3 WAV M4A

Generate Subtitles From Any Platform

YouTube
TikTok
Vimeo
Instagram
Facebook
All platforms →

Generate subtitles for your videos

Ṣí Ìṣàmúlò-ètò →

Àwọn Àtòjọ-ẹ̀yàn

subtitle generation runs in your browser: paste a URL, upload a file, or record from your mic. STT.ai picks the AI model and returns the transcript in under 5 minutes. Export as TXT, SRT, VTT, DOCX, JSON, or PDF.

Yes — every visitor gets 600 free minutes/month on STT.ai, usable for subtitle generation the same as any other workflow. Paid plans starting at $5/month unlock longer files, private transcripts, and priority queueing.

subtitle generation runs on the same AI models as the rest of STT.ai — our best models reach 95-97% accuracy on clean speech (3-5% Word Error Rate on benchmarks). Switch models on the fly if the first pass is below your target.

subtitle generation can run on any of STT.ai's 10+ models — STT.ai Enhanced (most accurate), Whisper Large V3 (99 languages), NVIDIA Canary (#1 WER on supported langs), Whisper Turbo (fast), Moonshine (lightweight), and more.

Yes. Every transcript exports as SRT or VTT — works with YouTube, Vimeo, TikTok, VLC, and every major video player. The burn-subtitles tool overlays them onto video as hardsubs.

Yes. Speaker diarization automatically labels each voice (Speaker 1, Speaker 2, ...) and you can rename them in the built-in editor. Works across all models and languages.

Most subtitle generation jobs finish in under 5 minutes. A 1-hour audio file typically completes in 2-3 minutes with our fastest models. Speed depends on chosen model and current GPU load.

subtitle generation accepts 20+ formats — MP3, WAV, M4A, FLAC, OGG, MP4, MKV, MOV, WebM, AVI, and more. Output to TXT, SRT, VTT, DOCX, JSON, or PDF.

Yes. Audio files submitted to subtitle generation are processed and deleted by default. Pro plans add client-side encryption — even if STT.ai's database is breached, your transcripts are unreadable without your key. Data is never used for model training without explicit opt-in.

Yes. STT.ai offers a REST API with Python and Node.js SDKs, plus an MCP server for Claude and Cursor — all usable for subtitle generation workflows. Free API tier includes 100 minutes/month.

Yes. Every transcript opens in the built-in editor where you can correct words, rename speakers, adjust timestamps, and add notes. All changes save automatically.

Every transcript gets a unique shareable URL. Export to DOCX or PDF for email. Pro plans add password-protected and permanent links — useful for client work.

STT.ai handles 1,300+ platforms including YouTube, Vimeo, TikTok, SoundCloud, Zoom, Google Meet, podcast hosts, and more. URL transcription works with publicly-available content only — DRM-protected sources can't be transcribed.