Media Client Secondary Content Insertion via Multicast
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Solution Overview
Problem
Traditional television broadcast systems face inefficiencies in inserting commercials and secondary media items into primary programming streams, particularly in terms of storage requirements and timely delivery, as they often rely on pre-downloading entire catalogs of secondary media items and may experience network traffic spikes during simultaneous requests.
Innovation Solution
A computer-implemented method where a media client identifies primary programming timeslots, requests and stores secondary media items from a multicast stream before an insertion signal, allowing for efficient switching between primary and secondary media streams, thereby reducing storage needs and optimizing network traffic by using a dedicated secondary media stream for delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the media client pre-downloads entire catalogs of secondary media items, then the media client can ensure timely playback during secondary programming timeslots, but the memory requirements on the media client increase significantly
Solution Approach 1:
The media client performs preliminary actions by requesting and receiving information about upcoming secondary programming timeslots and their associated secondary media items before the actual playback time. The client pre-loads only the specific secondary media items that will be needed soon, rather than downloading entire catalogs, thus balancing timely playback with reduced memory usage.
Solution Approach 2:
The system extracts only the necessary secondary media items from the complete catalog based on the scheduled programming information. The media client identifies and retrieves only those specific items that will be played during upcoming secondary programming timeslots, separating the needed content from the unnecessary bulk of the catalog.
2Adaptability or versatility
If multiple media clients simultaneously request secondary media items from the server, then the system can serve multiple clients, but network traffic spikes occur during simultaneous requests
Solution Approach 1:
Media clients perform preliminary requests for secondary media items during idle periods (such as during primary programming playback) rather than waiting until the last moment. This distributes the network load over time, preventing simultaneous requests and associated traffic spikes while still ensuring content is ready for timely playback.
Solution Approach 2:
The system implements periodic action by having media clients request secondary media items at scheduled intervals based on the programming schedule, rather than all at once. The server also responds to these distributed requests periodically, smoothing out network traffic patterns and avoiding concentrated bursts of data transfer.
Data Source
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AI summary
This document describes systems, methods, devices, and other techniques for determining media items to insert in a media stream. A first media client can play a primary media stream that is multicast to various media clients including the first media client and other media clients. The first media client identifies a start of a primary programming timeslot in the primary media stream, and in response, obtains and stores a secondary media item. After storing the secondary media item at the first media client, the first media client detects an insertion signal in the primary media stream that indicates a secondary programming timeslot is about to begin in the primary media stream. The first media client can then play the secondary media item in place of the primary media stream during the secondary programming timeslot.