Here’s a page on Archive.org for creating search queries without output of a variety of formats for raw data or even feeds: https://archive.org/advancedsearch.php#raw
The search should include at least videos posted from the IndieWeb account: https://archive.org/details/@indieweb
It might be worth having it pick up anything with the tags or common keywords like IndieWeb, IndieWebCamp, Webmention, Micropub, etc., but this may also require some moderation or oversight.
Good idea!