Abstract: An audio-visual live content delivery system includes a client having access to a provider network via a gateway, an audio-visual live content delivering equipment comprising a multicaster for transmitting audio-visual live contents in multicast form via the provider network, a de-multicaster being able to perform a conversion in unicast form of audio-visual live contents received in multicast form from the multicaster, and a controller managing routing of requests to get audio-visual live contents. The client performs a discovery procedure aiming at receiving information on potential presence and availability of the de-multicaster. When the client intends receiving a targeted audio-visual live content, the client sends to the controller a request providing indication of presence and availability, or not, of the de-multicaster. Then the controller decides how redirecting the client to fulfill the request, according at least to the indication of presence and availability, or not, of the de-multicaster.

Abstract: A local area network includes plural content delivery network CDN receiver devices so as to enable player-equipped terminals in the local area network to receive audio and/or video contents. The disclosed method includes: obtaining capacity information from the CDN receiver devices; selecting, according to the capacity information, at least one CDN receiver device for a session of delivering an audio and/or video content to the player; when the session ends, the selected at least one CDN receiver device holds in place, during a predefined time duration, processing resources for a potential upcoming session; when another session starts before expiry of the predefined time duration, the processing resources hold in place are used for the new session. And when another session starts after expiry of the predefined time duration, reselection of at least one CDN receiver device, according to updated capacity information, is performed.

Abstract: For delivering an audio-visual content to a client device, an interconnecting device interconnecting a first network to a second network, the client device being connected to the second network, an equipment adapted to provide the audio-visual content being connected to the first network, said equipment performs: receiving, from the client device, a first request for receiving the audio-visual content; transmitting a redirecting message to the client device, said redirecting message redirecting the client device toward an agent implemented in the interconnecting device. Furthermore, said agent performs: receiving, from the client device, a second request for receiving the audio-visual content; acting as a relay between said equipment and the client device.

Abstract: An audio-visual live content delivery system includes a client having access to a provider network via a gateway, an audio-visual live content delivering equipment comprising a multicaster for transmitting audio-visual live contents in multicast form via the provider network, a de-multicaster being able to perform a conversion in unicast form of audio-visual live contents received in multicast form from the multicaster, and a controller managing routing of requests to get audio-visual live contents. The client performs a discovery procedure aiming at receiving information on potential presence and availability of the de-multicaster. When the client intends receiving a targeted audio-visual live content, the client sends to the controller a request providing indication of presence and availability, or not, of the de-multicaster. Then the controller decides how redirecting the client to fulfill the request, according at least to the indication of presence and availability, or not, of the de-multicaster.

Abstract: For delivering an AV live content, time being divided into transmission periods, the AV live content being divided into chunks, a server performs: obtaining at least one multicast reference stream intended to transport one chunk per transmission period; obtaining at least one multicast side stream intended to transport, for each transmission period, a plurality of chunks which at least includes the same chunk as in each multicast reference stream and at least one preceding chunk; and synchronously transmitting each multicast reference stream and each multicast side stream along the transmission periods. A device willing to receive the AV live content performs: joining one multicast side stream for obtaining at least one chunk transmitted in a first transmission period; and switching to one multicast reference stream for obtaining subsequent chunks which are transmitted from a second transmission period following the first transmission period.

Abstract: For delivering an AV live content, time being divided into transmission periods, the AV live content being divided into chunks, a server performs: obtaining at least one multicast reference stream intended to transport one chunk per transmission period; obtaining at least one multicast side stream intended to transport, for each transmission period, a plurality of chunks which at least includes the same chunk as in each multicast reference stream and at least one preceding chunk; and synchronously transmitting each multicast reference stream and each multicast side stream along the transmission periods. A device willing to receive the AV live content performs: joining one multicast side stream for obtaining at least one chunk transmitted in a first transmission period; and switching to one multicast reference stream for obtaining subsequent chunks which are transmitted from a second transmission period following the first transmission period.

Abstract: For delivering an audio-visual content to a client device, an interconnecting device interconnecting a first network to a second network, the client device being connected to the second network, an equipment adapted to provide the audio-visual content being connected to the first network, said equipment performs: receiving, from the client device, a first request for receiving the audio-visual content; transmitting a redirecting message to the client device, said redirecting message redirecting the client device toward an agent implemented in the interconnecting device. Furthermore, said agent performs: receiving, from the client device, a second request for receiving the audio-visual content; acting as a relay between said equipment and the client device.