Method for optimizing the throughput of multimedia contents accessible by at least one user terminal, corresponding computer program product and management device

A non-transitory computer-readable medium comprising instructions stored thereon to implement a method, when said instructions are executed by a processor of a device for optimizing bit rate, wherein the method comprises:

• optimizing bit rate of multimedia contents accessible by a plurality of user terminals connected to a radiocommunications network cell, said multimedia contents being stored in the form of a plurality of independent chunks on at least one multimedia contents server associated with at least one contents provider, wherein said optimizing bit rate comprises the following steps:
• receiving at least one request to obtain at least one file representing at least one available quality corresponding to a bit rate for at least one chunk of at least one of said multimedia contents, called a multimedia description file, said request being sent by at least one user terminal of said plurality of user terminals to access said at least one multimedia content;
• obtaining said at least one multimedia description file;
• modifying said at least one multimedia description file on the basis of at least one piece of information representing a quality of delivery of said at least one multimedia content to the at least one user terminal, called information on quality of delivery,
• said modification comprising a sub-step of elimination, for at least one chunk of said at least one multimedia content, of at least one available quality corresponding to a bit rate higher than a preliminarily obtained average bit rate Qav, said sub-step of elimination being implemented when a maximum bit rate Qimax borne by said at least one user terminal is higher than said average bit rate Qav,
• said at least one eliminated available quality corresponding to a bit rate higher than said average bit rate Qav to which a margin Qdiff is added, this margin Qdiff being decremented at a subsequent implementation of said step of elimination,
• said modification delivering at least one modified multimedia description file;
• and
• transmitting said at least one modified multimedia description file to said at least one user terminal in response to said at least one request.

A device for optimizing bit rate of multimedia contents accessible by a plurality of user terminals connected to a radiocommunications network cell, said multimedia contents being stored in the form of a plurality of independent chunks on at least one multimedia contents server associated with at least one contents provider, wherein said device for optimizing the bit rate comprises:

• a reprogrammable computing machine or a dedicated computing machine configured to:
• receive at least one request to obtain at least one file representing at least one available quality corresponding to a bit rate for at least one chunk of at least one of said multimedia contents, called a multimedia description file, said request being sent by at least one user terminal of said plurality of user terminals to access said at least one multimedia content;
• obtain said at least one multimedia description file;
• modify said at least one multimedia description file on the basis of at least one piece of information representing a quality of delivery of said at least one multimedia content, to the at least one user terminal, called a piece of information on quality of delivery,
• said modification comprising a sub-step of elimination, for at least one chunk of said at least one multimedia content, of at least one available quality corresponding to a bit rate higher than a preliminarily obtained average bit rate Qav, said sub-step of elimination being implemented when a maximum bit rate Qimax borne by said at least one user terminal is higher than said average bit rate Qav,
• said at least one eliminated available quality corresponding to a bit rate higher than said average bit rate Qav to which a margin Qdiff is added, said margin Qdiff being decremented at a subsequent implementation of said elimination,
• said modification delivering at least one modified multimedia description file;
• and
• transmit said at least one modified multimedia description file to said at least one user terminal in response to said at least one request.