Video Caption Generator
Last updated: June 1, 2026AIAuto-generate subtitles for any video.
Video Caption Generator is a free online tool to auto-generate subtitles for any video. It runs entirely in your browser, so your files never leave your device — nothing is uploaded. There's no sign-up, no watermark, and it works on any modern browser on desktop or mobile.
How to use Video Caption Generator
The Video Caption Generator automatically turns the speech in your video into accurate, time-synced subtitles. It extracts the audio privately in your browser, transcribes it with AI, and gives you an editable caption list you can fix in seconds before exporting a standard SRT or VTT file. It is built for creators who need captions for YouTube, Instagram Reels, TikTok and Shorts without paying for an editor.
Read the full guide: How to Add Subtitles to a Video (Auto, Free)
- 1Drop in your video (or audio) file — the audio is extracted right in your browser.
- 2The AI transcribes the speech and splits it into timed caption lines.
- 3Edit any wording, then download an SRT or VTT file to upload alongside your video.
Export SRT & VTT
Get industry-standard subtitle files that work with YouTube, Instagram, TikTok, Premiere, CapCut and every major editor.
Editable captions
Fix names, punctuation or timing in a clean inline editor before you export — no clunky timeline.
Audio stays on your device
The video never leaves your browser; only a small, compressed audio track is sent securely for transcription, and nothing is stored.
Video Caption Generator — frequently asked questions
Is the video caption generator free?
Yes. It is free to use with the credits new visitors receive — no watermark and no subscription. Each transcription uses a few credits.
What subtitle formats can I download?
You can export SRT and VTT subtitle files, plus a plain-text transcript. SRT and VTT upload directly to YouTube, Instagram, TikTok and video editors.
Is my video uploaded to a server?
Your video is never uploaded. The audio is extracted in your browser and only a small compressed audio clip is sent securely to the edge for transcription, where it is processed and not stored.
How long can the video be?
Because the audio is compressed in your browser first, clips up to around 25 minutes work well. For longer videos, trim them into shorter sections first.
What languages are supported?
The AI model transcribes dozens of languages automatically, detecting the spoken language from the audio.
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