Baitu TV app is specially designed for Android TV box, all movie source are keep updating by developer, it was really convenient for people who love to watch movie. Actually movie sources are not consider very huge but mostly are available in high definition quality. It also supported Chinese subtitles, Baitu TV app did have live TV channel feature but it only for premium version, means you have to pay for that live channel. Thus, i’m just using it for watching movie or drama.
If your android version was below than 4.4, it might have compatible issue. Anyhow, you guys might just give a try first.