How to make captions for reels and edit a video like a document

What you need

• A video you shot yourself, up to 3 minutes (talk-to-camera clips, interviews and product demos work best)
• A free aiKit account
• Optional: your logo and brand colors in Brand Kit, so captions and text match your look

Steps

1. Bring in your clip

   Open Video Kit and press Choose clips, pick From Graphics Library, or drop the files anywhere on the screen. Editing starts right away in your browser while the footage copies to your account in the background. The first video sets the size: 9:16 for reels and short videos.

   Video Kit →

2. Let it write the captions

   As soon as the clip's sound is ready, the Words tab fills in on its own with every word and the moment it was said. Captions then appear a few words at a time, with the spoken word lit up. If people speak another language, set Spoken language and the words are written down again.

   Video Kit →

3. Pick a caption look and placement

   In Captions, choose a one-click look such as Bold pop, Karaoke, Boxed or Big word. It sets the font, colors, box and how words move together, and you can change any of them after. Make key words pop highlights numbers, prices and strong selling words.

   Video Kit →

4. Fix misheard words

   Read the Words tab once. To fix a word's spelling, double-click it (or select it and press Fix spelling), type the right word and press Enter. The sound doesn't change, only the caption.

   Video Kit →

5. Edit the video by deleting words

   To cut a sentence, click its first word, shift-click its last word and press Delete. The video cuts those words out and shares the pause around them so the cut sounds natural. Cut words stay struck through, and Bring back puts them back.

   Video Kit →

6. Remove pauses and ums

   Remove pauses and ums lists every long pause and every um or uh, each with a checkbox and its time. The top line says how many seconds it saves. Untick any you want to keep and press Cut. One Undo puts them all back.

   Video Kit →

7. Ask for the finishing touches, then export

   Type any change in Ask for any change, such as make it 30 seconds, bigger yellow captions at the top, or put the price on screen when I say it, and press Make the change. Anything not done is listed first. Then press Export and choose MP4 video, which plays on phones and every major social app.

   Video Kit →

Tips

• Many people watch short videos with the sound off, so captions carry the message. Keep each caption to a few words and make the spoken word stand out.
• Keep captions away from the very bottom and right edge of a 9:16 frame, where app buttons and post text cover the picture.
• Always read the captions before you post. Speech-to-text can mishear names, product names and unusual words.
• Cut the first few seconds hard. Remove the pause and the hello so the video opens on the most interesting line.
• Record in a quiet room with the phone close to you. Clean sound gives cleaner captions and fewer fixes.

Questions

Terms in this guide

How businesses use it

Checked against the product on 2026-10-31.