Method and device for energy reduction adjustment using an adaptive streaming network

A method comprising:

• encoding a video from an obtained visual content;
• decoding the encoded video;
• for a one or more target energy reduction rates,
• generating an attenuation map representation based on the decoded video;
• generating an attenuation map track comprising parameters related to the attenuation map;
• generating adaptation set information signaling the attenuation map track;
• and
• generating a manifest file representative of the obtained visual content comprising information related to the encoded video, representative of the use of one or more attenuation maps and representative of the attenuation map track.

A device for reducing energy consumption during an adaptive video streaming session comprising a processor configured to:

• obtain, from a manifest file associated with the adaptive video streaming session, information identifying one or more attenuation map representations, the information comprising one or more attributes defining an attenuation map display model, an attenuation use type, and an attenuation combination type, and information representative of the presence of an attenuation map track;
• obtain an initialization segment of the attenuation map track comprising the one or more attenuation map representation;
• select one or more attenuation map representations of the one or more attenuation map representation based on a target energy reduction rate;
• request temporal segments of a video representation and temporal segments of the one or more attenuation map representations;
• decode picture from obtained temporal segments of the video representation
• decode the one or more attenuation map representations;
• combine the decoded one or more attenuation representation with the decoded picture in accordance with the attenuation map display model, the attenuation use type, and the attenuation combination type to obtain an attenuated picture;
• and
• provide the attenuated picture.