You can enable a video to be available offline by allowing the viewer to download the content from your store, to do this follow the instructions below.
First, you will need to create a new program, and upload your videos, then you can enable downloading.
Enable offline viewing for the Web -
Offline viewing for OTT Apps iOS & Android -
By default, iOS & Android include secure offline viewing, so once you order & we launch your apps, they already include offline viewing.