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AI Subtitle Generator — Create SRT & VTT Captions

Auto-generate accurate subtitles from your video or audio in 99+ languages. Export SRT, VTT, or burned-in captions. Free tier included.

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How to use AI Subtitle Generator — Create SRT & VTT Captions in 3 steps

  1. 1

    Upload video or audio

    Drop any video (MP4, MOV, AVI) or audio file (MP3, WAV, M4A). URL pasting from YouTube and TikTok also supported.

  2. 2

    Generate captions

    AI produces word-level captions with timestamps, automatic line breaks, and speaker labels if requested.

  3. 3

    Export or burn in

    Download SRT for YouTube, VTT for HTML5 video, or burn captions directly into your MP4 for social platforms.

Why choose AI Subtitle Generator — Create SRT & VTT Captions

  • SRT, VTT, and burned-in

    Export standard SRT/VTT or hardcode captions into an MP4 for TikTok, Instagram, and Shorts.

  • 99+ languages

    Caption in any of 99+ supported languages, with accurate punctuation and diacritics.

  • Inline caption editor

    Fix timing, split/merge lines, and correct spelling in the browser before exporting.

  • Translate captions

    One-click translation to English, Spanish, Japanese, Portuguese, and more after generation.

  • Time-aligned output

    Every line stays in sync with speech — manual timing adjustments are rarely needed.

Who uses AI Subtitle Generator — Create SRT & VTT Captions

  • Social video creators

    Boost retention on TikTok, Reels, and Shorts — 85% of social video plays with sound off.

  • YouTubers

    Add high-quality closed captions to improve SEO, accessibility, and international reach.

  • Educators

    Make lectures accessible with WCAG-compliant captions for deaf and hard-of-hearing students.

  • Marketers

    Caption product demos and webinars to improve comprehension and time-on-page across audiences.

Built for creators worldwide

Built for creators, journalists, students, and researchers worldwide.

Frequently asked questions

What output formats are supported?
SRT (universally supported), VTT (HTML5 web video standard), TXT (plain text), and MP4 with hardcoded captions (for TikTok/Instagram/Shorts).
How accurate are the auto-generated captions?
Typically 85-99% for clear speech in supported languages. Background music, accents, or overlapping speech reduce accuracy — use the inline editor to polish.
Can I translate captions to other languages?
Yes. After generating captions in the source language, one click translates them to 60+ target languages.
What video and audio formats do you accept?
Video: MP4, MOV, AVI, MKV, WebM, FLV, WMV. Audio: MP3, WAV, M4A, FLAC, OGG, AAC.
Is there a free plan?
Yes — sign in for 30 free caption-minutes per month. Anonymous use allows up to 5 minutes per file.
Will the captions burn into my video permanently?
Only if you choose the burn-in export option. SRT and VTT files stay separate from your video so you can edit or toggle them.

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