I remember I wanted to start publishing audio podcasts, but for that I had to reformat the content in video format into mp3s. It's not that hard really, but you need to know exactly how and what to use to do it. I found here https://setapp.com/how-to/convert-youtube-to-mp3 a really cool way and method of such conversion, also very fast and without loss of quality. I hope I was able to help.