THEOplayer is a commercial, high-performance HTML5 video player for web, iOS, Android, and smart TVs. Unlike open-source players (Video.js, Plyr), THEOplayer includes a built-in Content Protection Module that allows legal, offline downloads for premium content (e.g., Netflix-style apps). Key Feature: Offline Download Manager THEOplayer does not allow you to download arbitrary videos from any website. Instead, it provides an SDK for developers to implement secure offline playback of DRM-protected content (Widevine, FairPlay, PlayReady).