Captioner: AI Video Translator

Captioner is an AI video translator: it turns a video in a language you don't speak into one you can watch in your own. Pick a video from your phone, or paste a RedNote (Xiaohongshu) link — Captioner transcribes the speech, translates it, and plays the video back with captions in your language, plus an AI summary of what it says.

Any language in, any language out: Thai speech to English captions, English to Burmese, Chinese to Vietnamese — every direction works.

No account. No editing skills. Free translations every day.

HOW IT WORKS

1. Pick a video from your phone, or paste a RedNote link

2. Choose your language — 100+ supported

3. Watch with translated captions, or skim the AI summary first

WHAT YOU GET

• AI subtitles — accurate speech-to-text, automatically timed

• Translation across 100+ languages: Burmese, Thai, Vietnamese, Indonesian, Malay, Tagalog, Khmer, Lao, plus English, Chinese, Hindi, Japanese, Korean, Spanish and 90+ more

• Hardcoded captions? Covered. Captioner reads burned-in captions on screen and shows the translation right under them — the text other video translator apps can't touch

• AI summary — know what a video says before you watch it

• Library — translated videos stay saved on your device for rewatching

WORKS WITH

• Videos saved on your phone, from any app

• RedNote (Xiaohongshu) share links — copy in RedNote, paste in Captioner

• More platforms are coming — tell us which one you need: support@captioner.io

PERFECT FOR

• Watching foreign-language videos with subtitles in your language

• Understanding a video someone sent you, fast — read the summary first

• Translating videos for friends and family who speak another language

• Language learners who want real subtitles on real videos

FREE EVERY DAY

Captioner comes with free daily translations, no sign-up needed. It runs on the same engine as captioner.io, our AI subtitle generator and video translator on the web.

Your videos are processed securely and never shared.