I just started using Jellyfin this week on a NVIDIA Shield Pro (2019). I am running the 0.11.5 version of the AndroidTV app. I connected my HDHomeRun CONNECT QUATRO and am able to load channels successfully in both my web browser and regular Android app on my phone.
However on my NVIDIA Shield, whenever I try to “tune” to a channel, I just get the spinning indicator in the center of the screen and the video never starts playing. Forgive me if this is a known issue, but I didn’t seem to find it on the issues list on GitHub. Please let me know if you would like to me to provide more details/logs/etc, I’d be happy to help. Thanks!