Streaming is available on both iOS, Apple TV, and macOS however connections to cloud services can only be made on iOS and macOS. Once a connection has been made, this will sync to other devices via iCloud.
Adding a Cloud Share
Step 1. Tap the Settings (gear) icon in the lower right corner, and select Add Files.
Step 2. Locate the Cloud Services section, and select Add Service.
Step 3. Select the cloud service you wish to use from the Protocol list. Then follow the prompts to log in and connect your account.
Step 4. (optional) Once connected, you can choose to add one or more favorites for direct access to the folders you use the most. Simply tap the star icon to add a folder as a favorite.
Adding at least one favorite is required in order to access videos on Apple TV.