How to populate user generated content for app when launching

I'm building an app that allows users to generate photo/video content and display it to their followers. Media will have maximum of 24 hours visibility, after that, it will get deleted from server. Max of 5 media is allowed to stay forever per user. Question is: what should I show to initial users when launching app as I've nothing to show? Should I use dummy data when launching and later delete it? I'm looking for solution besides empty state concept.