The browser route
Android TV, Google TV, Fire TV's Silk browser and most smart TV browsers open the site. Bookmark it, search with the remote or the microphone, open a title, set the country once, and press Watch now; the title opens in the service's TV app when it is installed, and plays at the tier the screen allows, 4K for the recent Indian releases on a 4K set.
The casting route
Faster: open the title on your phone, press Watch now, choose the service, and cast from the service's app. The phone becomes the remote and My List stays open on it.
Fire TV Stick
Open Silk, enter the address, bookmark it. Watch now opens the service's Fire TV app when it is on the stick; if not, the stick offers the install.
Chromecast, Apple TV and consoles
Chromecast with Google TV and Apple TV run the services as apps and take a cast or an AirPlay from the phone. PlayStation and Xbox run the services as apps too; note the title and the service, open the app on the console, start it there.
The dub on a television
The audio menu in the TV app carries the same tracks as the phone app, so the Hindi dub or the original is one press on the remote. The dual audio page explains switching.