Method for retrieving, by a client terminal, a content part of a multimedia content, a cache being arranged along the transmission path between the client terminal and a server, several representations of said content part being available,comprising: A/ sending a request for a first representation of said content part belonging to a set of allowable representations selected among said available representations of the content part; B/ in case said first representation is not cached, receiving a response message from said cache indicating that the first representation is not cached; and wherein, upon receipt of a response message, steps A/ and B/ are successively repeated with an alternative representation of said content part, different from the first representation, until one requested alternative representation has been received by the client terminal from said cache or until all allowable representations of the set have been requested.