After the holidays, I wanted to display photos and videos on my connected TV to watch them with the family. I didn't find an app on Fdroid!?, so I started to build my own app to cast media through the DLNA protocol (photos, videos or even audio) (https://en.m.wikipedia.org/wiki/DLNA) I wanted to add Chromecast support but it is a pain and might not deserve this time. The app works as expected with connected TV. I did it with react-native to also target iOS. I might publish it in the coming weeks.