Decoder, system and method for decoding multimedia data at the level of a terminal by managing the energy available for decoding comprising a decoder of the multimedia data, characterized in that said decoder comprises at least one low-consumption decoding chain comprising an activation module suitable for activating a first low-consumption decoding chain or loop filter and a low-consumption interpolation chain as a function of at least one parameter representative of constraints of user energy and/or of the mobile terminal and of one or more metadata Md associated with a decoding complexity and/or with a decoding energy.