The NBA app is available on Roku versions 9.x or greater in the following countries:
Argentina, Australia (via Telstra TV), Brazil, Canada, Chile, Colombia, Costa Rica, El Salvador, France, Germany, Guatemala, Honduras, Ireland, Mexico, Nicaragua, Panama, Peru, United Kingdom, United States
Select NBA League Pass subscriptions are available for purchase on Roku in Brazil, Canada, Germany, Mexico, the United Kingdom and the United States
The NBA Roku app supports video quality of 1080p/60fps. Video playback may be impacted by your Roku device, version and model. Please see here for Roku models and specifications