Dolby Vision not working on Android ExoPlayer

[tmsrxzar]

VLC worked in the past, and now it doesn't. I don't know what changed. I've seen other people report the same problem recently

found an unresolved issue from the past that sort of describes this https://github.com/jellyfin/jellyfin-android/issues/195

was a bit more than i was prepared to read but you could have a look