A real-time mosaic generator that is an IP in/out audio/video unit aimed at generating a user configurable mosaic page. It can be used for channel browsing in live EPG or for monitoring applications. The unit ingests up to 64 live or file video input feeds and displays them as many video thumbnails assembled into one single video output. Thumbnailsí sizes and positions can be set independently over a user-defined background. The composited scene is delivered in IP or OTT TV formats, in HD or SD resolution, multiplexed with the associated audio feeds. Provides monitoring functionalities, such as cycling or alarms, for head-end operation rooms.