Hi @luckner,
The MIT license applies to the React Native wrapper open-source project (which uses the native, non-MIT-licensed Android and iOS player SDKs for playback under the hood). This is the same for most public Github repositories Bitmovin provides, like the Player UI, player sample repositories for Android, iOS, Web and Roku, or 3rd party integrations like Conviva or Yospace.
All these projects are MIT-licensed and can be used and changed as needed free of charge, but all of them require active player licenses to use the Bitmovin Player.
If you just use Playback, you don’t have to use or pay for Encoding, and vice versa.