I considered it but it didn't support the fields I needed like magnet links, and eventually audio and podcast info like track number etc. So creating my own spec seemd like the best option. Plus I really wanted bitvid to only support magnet link and webtorrent webRTC media content.

There are and will be tons of nostr video clients that point to a http link somewhere and nip-71 is perfect for that purpose, but I felt like webRTC required a special place due to the necessity of seeding.

And the same applies to the torrent nip. I can remember the number. But it had similar issues just on the bittorrent side rather than Webtorrent, which is what I am using.