Descript's correcting text functionality is there to help you fix transcription errors. After making a transcript correction, Descript will quickly re-scan the region to sync your corrected text to the corresponding script audio. To ensure your script media and transcript realign properly, you can only adjust a max of 100 characters at once.
If you try to add or delete more than 100 characters at once, you will see the following alert pop up:
"You can add or delete a ma of 100 characters at a time"