RIP. best of luck to OP ig. I know there are ways to do it, since I've seen ACNL free camera vids b4, but no idea what programs they used. Since it was a higher quality recording, that implies that it was an emu. I'll see if I can find the video?
Edit :
<- here was the video I was talking about. When I checked the comments, I saw one by a guy that apparently helped the creator with the mod to produce the video. He seems to not use an EMU, but if you want to try and get in contact with him, I found his twitter, which he seems to be active on.
https://twitter.com/rydoginator
His follower count is pretty low, so he has a high chance of responding if you get into contact with him, but he might not understand how to make it work with citra.