A quick guide to getting this working in the UK (and probably other non-US areas). I only have films in US iTunes and UltraViolet - none in Amazon or Google Play so I can't comment on those. Hope this helps!
You will need: A US iTunes account (see
here) and a VPN or location selection service (I recommend TunnelBear - very easy to use and you get 500 MB free each month which is more than enough to set this up)
On a computer
- Open iTunes and ensure you are logged in to your US iTunes account
- launch your VPN/location service to make it look like you are in the US
- If you have UV titles (and don't have a VUDU account) go to www.vudu.com and create an account. Then link this account to your UV account to enable your UV titles to show up in VUDU
- Go to www.moviesanywhere.com and create an account - if you already have a Disney Movies Anywhere account I suggest you use the same e-mail address and the DMA account will be connected automatically (don't worry, you still get your free films)
- Connect your VUDU account to the MA account (it will take you to the VUDU site to confirm)
- Connect your iTunes account to the MA account (it will open iTunes to confirm - this is why you needed to be logged in to your US account in step 1)
- Your libraries will now merge - for me this took <5 minutes for 60-70 films - you should also find the free 5 films adde to your account if you linked two or more services to Movies Anywhere
If you want access on iPhone, iPad or Apple TV
- Ensure you are logged into the App/iTunes Store using your US account details (the option above 'aeroplane mode' in Settings on iPhone/iPad and Accounts in Settings on the Apple TV
- Open the App store and download the Movies Anywhere App (there is no geolocation requirement so no need for a VPN on your device)
- Once the App is installed open it - a code will be displayed on the screen (there is no geolocation requirement for running the app, but you will need your VPN/location service to link it to your account in the next step)
- Go to www.moviesanywhere.com/link and follow the instructions (you should still be connected to your VPN/location service)
- Once the code has been entered, the App should move forward to your library
- You can now disconnect your VPN/location service
Using the Apple TV as an example - the Movies app should now have iTunes versions (incl UHD HDR) of all your digital movies harvested from UV, iTunes (US) and DMA (and any other store you linked). If you need to set your App/iTunes account back to your UK one (e.g. iPhone or iPad) then the Movies app will contain any UK account films you have bought and the Movies Anywhere app will contain all you UV and US-bought iTunes films (probably not UHD/HDR though - I don't have the quipment to check). The Movies Anywhere app does not need any geolocation trickery once linked. I am in the UK and am quite happily accessing my films via both the Movies App (US iTunes account signed in) and the Movies Anywhere app on my AppleTV 4.