Auto Captions for Video, Burned In and Synced to the Voiceover
Vidup adds auto captions to your video and burns them in, timed word for word to the AI voiceover. Your short reads clearly with the sound off, and the captions reframe cleanly for 9:16, 1:1, and 16:9.
Preview. Sign up to render yours.
In short
Auto captions for video are subtitles generated and timed automatically, then burned into the frame so they play everywhere without a separate file. Vidup times captions word for word to the AI voiceover it generates, styles them for readability, and positions them safely inside each aspect ratio. Because most social video is watched muted, burned-in captions keep your message landing with the sound off. The captions export inside finished 9:16, 1:1, and 16:9 shorts with no watermark, all in one pass on a flat plan with no credits or render meter.
What you get
Auto captions, built for creators, marketers, and small teams
Burned in, not a sidecar
Captions are rendered into the video itself, so they show on TikTok, Reels, and feed without uploading a separate SRT.
Timed to the voiceover
Vidup syncs captions word for word to the narration, so on-screen text matches what is spoken.
Built for muted viewing
Most social video plays with sound off, so burned-in captions keep your point landing either way.
Safe in every size
Captions reposition cleanly for 9:16, 1:1, and 16:9 so they stay readable and clear of platform UI.
How it works
From source to finished video in four steps
Add your content
Paste a script, blog, or URL. Vidup generates the AI voiceover from it.
Vidup writes captions
It transcribes the voiceover and times each caption word for word to the narration.
Style and place
Vidup styles the captions for readability and positions them safely inside each aspect ratio.
Export burned in
Download watermark-free 9:16, 1:1, and 16:9 videos with captions rendered in. Flat plan, no credits.
Make your first video
Turn a script, blog, or URL into a finished short with voiceover, captions, footage, and music, auto-sized for every platform. Flat plan, no credits, no watermark.