Can you download the videos to mp4 or is it some proprietary DRM thing that only plays on YouTube? If not that just sounds like a worse version of yt-dlp
Definitely the latter. On the iOS app you choose videos to download, and I believe they only work for 30 days without Internet access. I use yt-dlp for videos I want to archive, but I use the YouTube app downloads for one-off stuff like loading up my iPad before a flight.
I've stopped recommending this (except for in-person to friends) because it's so valuable, and I'm seriously worried about it getting stomped by YouTube.
