Fix auto captions without rebuilding the timing
Automatic captions are often good at timing and bad at the exact words — names, numbers, product terms, punctuation, and short phrases are common mistakes. If you already wrote the video script, correcting every caption by hand wastes the best part of auto-captioning: the timeline. This tool keeps that timeline and aligns the correct script back onto it.
A fast CapCut caption-correction workflow
- Generate auto captions in CapCut or your preferred video editor.
- Export the timed captions as an SRT file.
- Load that SRT here and paste the original, correct script.
- Run the aligner and review the confidence and changed-cue counts.
- Download the corrected SRT and import it back into your editor.
How script-to-SRT alignment works
Wyvek compares the words in the timed captions with the words in your script in sequence. Exact matches anchor the timeline; substitutions represent likely speech-recognition mistakes; and missing or extra words are attached to the nearest matching phrase. The result reuses the original SRT cue numbers and timestamps. For unusually long files, a lightweight proportional fallback is used so processing still stays entirely in your browser.
When this tool is the right fit
Use it when the recording follows a known script and the auto-caption timing is already useful. It is not a speech-to-text engine and it does not listen to your video, so it cannot repair timing that was wrong in the source SRT. If you want to clean general pasted text first, use the line break remover; if you need to compare two versions manually, try the text diff checker.
Next step: check subtitle readability and timing
After correcting the wording, run the file through the Subtitle Quality Checker & Optimizer. It checks CPS, line length, overlaps, timing, and safe line-wrap fixes without changing your corrected wording or timestamps.