You can automatically save broadcasts with less than 12 hours on the Youtube platform. It applies to all types of streams, including those conducted using a webcam or mobile device. You can also convert them from https://www.lolwot.com/youtube-to-mp3-converters/ after that. Btw, you should also keep backups on your computer. In addition, you can create clips with the best moments during the live broadcast. Unfortunately, broadcasts that last longer than 12 hours cannot be saved. I hope you will be able to find out the proper software.

You should try to find the software on the internet. You can also try to search for video guides on the YouTube channel itself.