Word-level timing
Each word appears as it is spoken, the caption style short-form viewers expect and feeds reward.
AI Caption Generator for Video
GPT-Video is an AI caption generator for video. It writes captions from your audio, word by word, and burns them into the exported 9:16 clip.
Workflow
How it works
Add your video
Upload a clip or use one produced inside GPT-Video. The audio is transcribed with speech recognition.
Review the transcript
Captions are generated word by word with precise timings. Fix a name or a term once and the captions update everywhere.
Style and render
Pick the caption look, and the animated text is rendered into the exported vertical video — no separate subtitle file to manage.
Why it matters
What you get
Sound-off friendly
Many people watch short video with the sound off. Burned-in captions keep your clip understandable from the first second.
Part of the pipeline
Clips from the AI clip generator, stream highlights and story formats all pass through the same captioning engine automatically.
Editable before export
Correct the transcript, change the style, or ask the Editor Assistant to restyle the captions in plain language.
FAQ
What are AI captions?
AI captions, also called AI-generated captions, are subtitles that software writes from the audio of a video. GPT-Video writes them word by word, lets you correct the text, and burns them into the exported 9:16 video.
How do I add captions to a video?
Upload the video to GPT-Video. It transcribes the audio, lets you correct the transcript, and renders animated captions into the exported 9:16 video. You pick the caption style, and there is no subtitle file to manage.
How accurate is the AI caption generator?
It transcribes the speech word by word with timings. Accuracy depends on how clear the audio is, so review the transcript and fix any names or terms before you render.
Are the captions animated?
Yes. Captions appear word by word in sync with the audio, and you choose the caption style before you render the vertical video for TikTok, Reels or Shorts.
Do I get a subtitle file or burned-in captions?
GPT-Video burns the captions into the exported video, so they look the same on every platform and there is no separate subtitle file to upload.
Can I change the caption style?
Yes. Pick a caption look before you render, and change it later by editing the style or describing the change to the Editor Assistant in chat. Every change can be undone.
Is captioning automatic for generated clips?
Yes. Clips produced by the clip generator and the viral formats come out captioned by default, and you can still correct or restyle the captions before you export.
Related
Start today
Create an account and use AI Caption Generator for Video when GPT-Video opens.
Plans from $19 a month. Cancel any day, keep the month.