CPC Class H04N

This document describes an adaptive bitrate streaming method allowing streaming an audio video (AV) content to a client device using a multi content delivery network (CDN) approach. Each CDN stores multiple versions of a content that can be requested in the form of a succession of consecutive files using HTTP requests. The method is based on a use of an intermediate module, called diversity module, between an AV player of the client device and each CDN of a plurality of CDN. For each file of a version of a content requested by the AV player, the diversity module requests a manifest file to each CDN and estimates a bitrate of each CDN using reception performances of the manifest files. Each file is requested by the diversity module in the form of a succession of groups of segments structured according to a pattern comprising a predetermined number of segments. Each group comprises one set of segments for each CDN, each set comprising a number of segments intended to be requested to the CDN to which they correspond proportional to the bitrate of this CDN.

Methods and systems for monitoring a service provided over a packet-switched network, such as an Internet Protocol television (IPTV) service, an Internet access service, or a voice-over-Internet-Protocol (VoIP) telephony service. Various parameters related to the service (e.g., parameters indicative of packet loss, packet corruption, or other packet error) are determined and used to assess various aspects of the service and/or network over which the service is delivered, including a quality of experience (QoE) of subscribers.