Sounds like an easy enough thing but have not found a way.
Objective is to cycle through an album of photos stored on USB plugin to the TV.
Issue number 1: TV does not automatically resize photo to full screen.
Issue number 2: The inbuild album function does not do slideshow.
Without resorting to connecting a PC/Laptop or cast from phone, was hoping to download an app.
Issue number 3: TV runs Tizen, and they have closed Tizen app store last year.
Any suggestions that I may have overlooked?
Chromecast screensaver -> photos on your phone is one way to achieve what you ware trying do.