You’re welcome. Dunno about a need to copy: You can bookmark topics or even individual posts on this platform (with Discourse’s internal bookmarking system), but if you’re not regularly active here then it probably makes more sense to do whatever you did. 
For whatever it’s worth, this is the specific topic that came to mind when I saw yours, starting around here:
I agree that a download facility built into Web View would be a welcome feature, and it’s one that’s been requested in this Wishlist:
You can visit that topic to Vote above the initial post and add your ideas and use cases to the comments to show your support.
If I really need video footage to preserve for some kind of “evidence” situation, I generally prefer to pull it straight from the card (which means ejecting and physically removing the microSD card from the camera; I have cards in my Wyze Cams), but I understand that’s not always practical, and then “stitching” the videos involves a little work, too, but there are freely-available tools that make that relatively easy.
Your emulator work-around seems like a good idea. I’m glad that got you what you needed! 