Flutter Mini OTT apps should support both live streaming and on-demand playback of content. Live TV channels can be streamed in real-time, allowing users to watch their favorite shows and events as they happen. On-demand content, such as movies and videos, should be available for playback at any time. Advanced playback features like pause, rewind, and fast forward, as well as the ability to create playlists or save favorites, can improve the user experience and engagement.