I'm assuming you're referring to the popular online tool "Gettune CC Top" or similar services that offer free online tools for YouTube video optimization, specifically for getting the top or highest quality closed captions (CC) for YouTube videos.
: Use the "Download" button to save the MP3 directly to your device for offline listening. Top Features of the Platform get tune cc top
Reuse, remix, and use commercially as long as you credit the creator. I'm assuming you're referring to the popular online