A method and corresponding equipment (11) for encoding different types
of
objects of a multimedia data stream so as to provide improved overall quality (Q),
according to relationships (11b) between quality (Qi)
and encoding size/transmission rate (Ri) for each object, and according
to penalties (11c) for removing objects from the multimedia data
stream. A multimedia data stream is provided in which the quality of the different
objects tends to be similar according to rules provided by the invention for assigning
a value of quality to each of the different kinds of objects of the multimedia stream.
