What it does
Upload a video and CaptionFX creates time-aligned captions. You can correct text, adjust timing, bleep or cut selected words, choose a caption style and export a captioned MP4.
AI video caption generator
Generate captions, then edit them like a video timeline.
CaptionFX turns speech in a video into timed captions you can review, restyle and export as a new MP4. The captions stay editable until you burn them into the final video.
Why creators use it
Most auto-caption tools stop at a transcript. CaptionFX keeps the captions connected to the video, so edits happen where the words appear on screen and the final download is ready to post.
Output format
The user-facing output is a video file with open captions burned into the frames. Caption files are only temporary export data, not the main deliverable.
Questions people ask
Does CaptionFX export a captioned video?
Yes. The final download is an MP4 with captions burned into the video frames.
Can I edit captions before exporting?
Yes. Captions remain editable in the browser until you export the final video.
Can I preview before paying?
A new account can create one project, edit captions and preview it with a watermark before paying for the clean export.