Captionly
Add captions to your videos using local AI in your browser.
What is Captionly?
Free AI video caption generator that runs entirely in your browser. Auto-transcribe your video with Whisper AI, style the captions, and export as MP4, WebM, or SRT — no upload, no server, 100% private. Features - AI transcription with word-level timestamps - Live caption styling (font, color, size, position, background, etc.) - Edit captions without re-transcribing - Export burned-in captions or SRT subtitles
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