Original language first
Every title page states the original language up front, and every list can be filtered by it on the languages page, so you know whether you are opening a Japanese series, a Korean drama, a Filipino film or an American one before you press anything. The original title sits beside the English one on every card.
Anime: sub and dub
Most current anime is available both ways on the services that carry it. The subtitle track arrives with the simulcast; the English dub follows, usually a few weeks behind for a current season and immediately for an older one. Press Watch now, open the service, and the audio menu lists the tracks. Where a later season shows subtitles only, the dub is a season behind and follows. The anime guide has the rest.
K-dramas
Subtitles are part of the appeal, and every service on the Watch now list carries the translated track from the day an episode airs; English dubs exist for the biggest titles and are listed in the same menu. Turn subtitles on in the service's player and it remembers the choice.
Films from elsewhere
A Filipino film on a Philippine service carries Tagalog audio with English subtitles; a Korean film carries its original track and, on the larger services, an English dub. The audio menu names the tracks by language, and the title page here tells you the original one, so you can choose the original with subtitles or the dub and know which is which.
Dual audio
"Dual audio" comes from the days of downloaded files with two language tracks inside. On a service, every track the title has sits in the audio menu, so the dual-audio version is just the title with the menu open; switch mid-episode if you want, and the subtitles follow the track.
