File structure techniques for storing multiple bitrate content

摘要

A remote storage digital video recorder (RS-DVR) system is disclosed. The RS-DVR system includes a network interface to communicate data between the RS-DVR system and a subscriber system via a network, a file system module coupled to the network interface, an ingest agent coupled to the file system module to receive encoded media segments that represent media content files encoded at a plurality of different bitrates; and a storage architecture coupled to the file system to store the encoded media segments, resulting in stored media segments. The RS-DVR carries out a number of functions and operations to service multiple subscribers and associated subscriber systems, such as various storage device management operations, file structure techniques, assignment of recorded media to subscribers, file system indexing, and supporting shared and per-subscriber content rights.

主权项

1. A remote storage digital video recorder (RS-DVR) system comprising:
a network interface to communicate data between the RS-DVR system and a subscriber system via a network; a file system module coupled to the network interface; an ingest agent coupled to the file system module to receive encoded media segments that represent a media content file encoded at a plurality of different bitrates; and a storage architecture coupled to the file system to store the encoded media segments as a single logical file on behalf of the subscriber system and only accessible by that subscriber system, wherein:
the single logical file comprises a plurality of different sets of the encoded media segments;each set of the plurality of different sets comprises a group of a plurality of the encoded media segments having identical time indices and identical durations;each encoded media segment of the group is associated with a different bitrate of the plurality of different bitrates; anda beginning of data representing a respective encoded media segment of a respective group is located at a predefined increment of storage space of the storage architecture to enable the file system module to retrieve a requested encoded media segment for a desired bitrate by consulting a table that indicates a specified offset for the desired bitrate, the specified offset corresponding to the predefined increment of storage space for the requested encoded media segment.