Create Gallery using pics from security IP cams

FYI: I’m presently building a new site and new to WordPress. Here’s the old site: https://www.timcraig.com/webcam/security.htm I use php scripts to do what I want for viewing jpgs but would like to update to a newer, more efficient functioning page.

Now I’m building a new site using WordPress. I just installed Nextgen but don’t know how to use it yet. So I’m willing to try any plugin. Here’s the problem:

1. I have 4 IP cams, each sending jpgs of any motion directly to it’s own folder on my site. I want 4 different galleries (one for each cam) to be created whenever I decide to look at the pics

2. Since these are security cameras, I would like the gallery sorted by date and time with the newest showing first.

3. There will eventually be thousands of pictures in each folder and I’d like to delete any jpgs from the folder after 30 days.

I know there have to be people out there trying this same thing. So thanks in advance for your help!