How to Fix Wrong Words in Auto Captions

To fix wrong words in auto captions, open the caption editor before you publish, tap or click the wrong word, and type the right one; every major tool lets you do this before export. The words most often wrong are names, brand terms, slang, numbers and anything said over music, so check those first.

Why auto captions get words wrong

Speech-to-text models guess the most likely word from the sound. They do well on clear, common English and worse when:

• The word is rare or new. Names, product names, usernames and slang aren't in the model's usual vocabulary.
• There is music or background noise. Speech under a loud track is the most common cause of garbled captions.
• People talk over each other. One test of Whisper large-v3 measured about 93% accuracy on single-speaker segments of a panel recording and about 82% where people overlapped.
• There are long silences. Some models invent words in silent stretches. Capsubs runs a voice-activity check that drops words detected where nobody is speaking.
• The accent or language is less represented in training data. Accuracy varies a lot by language; Whisper's own model card warns about this.

Fix words in each app

In Capsubs

1. In the upload screen, turn on Check words before burning in.
2. Capsubs transcribes the video and stops; the video shows as "ready to check" in your list.
3. Click Check captions: every word is shown in order. Click a word to fix it; clear a word to remove it. Timing stays the same.
4. Click Burn in captions. Your corrected text is rendered into the video.

You are only charged once, whether or not you edit.

Get fewer errors in the first place

1. Record clean audio. A clip-on or phone-close microphone helps more than any software setting.
2. Keep music low under speech. Add the music track after captioning, or lower it during talking.
3. Avoid talking over each other in interviews; leave a beat between speakers.
4. Say names clearly the first time, and keep a list of the words your tool gets wrong so you know where to look.
5. Pick the right language in tools that ask (TikTok's "Select video language", CapCut's language setting).

What to check before you post

• Names of people, brands and places
• Numbers, prices and dates
• Negatives ("can" vs "can't" flips the meaning)
• Words said over music
• The first and last line, where audio is often clipped

FAQ

Can I fix captions after posting? For burned-in captions, no: you would need to re-export and re-post. YouTube caption tracks and TikTok auto-generated captions can be edited after posting.

How accurate are auto captions? On clean English speech, modern models get most words right, but accuracy drops with noise, accents and overlapping voices. See how accurate are auto captions?

Why do captions show words nobody said? Some speech models "hallucinate" words during silence or music. Trim long silent sections, or use a tool that filters non-speech.