I'm using Huffduffer for a while and it's really good, since I can create a podcast feed from any available audio on the web and it extracts audio from several (video) platforms and stores it for a month.
> Huffduffer takes the pain out of podcasting found sounds.
> Huffduffer takes the pain out of podcasting found sounds.
https://huffduffer.com/about
The website is a bit dated but overall it works well with a bookmarklet.