Auto uploads UI - empty camera directory not shown, separate media types confusing

Just some feedback re. the UI for auto uploads in the beta version (ping @mario). I'm referring to the part of the auto-upload interface that features:

- An icon that can be a picture or a camera
- An outline cloud with a line through it that becomes a filled in blue cloud icon
- A preview of the media in the folder

For the most part this was a pretty intuitive interface for me, but the big "gotcha" was that it only shows up for already-populated directories and it's not obvious that it's only for one media type. So for example

- If you're setting it up on a new phone, it won't show the camera directory at all. It's only after you take a picture or video that you can enable auto-uploads, and then the existing files (that are *required* to make the UI visible!) won't be part of the auto-uploads. In an ideal world ( 🙄 ) there'd be a permanent setting that's just labelled "Your Camera Media" that always tracks the configured camera directory, even if it changes. There'd also be an option to "prime" the uploads with existing media. Again, I don't know if that's possible given Android permissions.

- This was the most confusing thing for me: at first I had pictures in my camera directory but no videos. In this situation, it's not at all clear that the little "photo" icon *only means photos will be synced!* Because there's nothing to compare it to! In other places in Android, the same icon can mean all camera media (eg. the gallery icon is usually just a stylised picture in a frame). So I enabled auto-uploads, but then videos didn't upload, and when I went back to the settings I realised what had happened. ...And then I had to sync the existing videos manually.

On the plus side, I *really* like the automatic sorting by year/month, and the automatic deletion, and I'll just reiterate that I've been using it pretty heavily for the last couple of weeks and I've never had a photo or video fail to upload eventually 👍

Vital stats: Nextcloud version 2.0.0RC2
Android: 7.1.2
OS: LineageOS 14.1
Phone: HTC One M9 (often called "himaul")

Camera storage dir is external SD card.