Create An App for Streaming Videos

I need an app that will allow me to - Create new 'streams' that clients will display on their smart TVs (FireTV). - Each Stream is given a 6 digit UID code - Streams can play YouTube videos, text slides, image slides that we add IN ORDER. - Streams can have an optional bottom ticker that shows the current time/temperature. The back-end allows us to manage the stream. (see attachments) The front end allows the user to punch in their access code and then the stream will play and loop.