Method for processing at least one multimedia stream relative to a real event, in the course of acquisition or acquired by a communication terminal, denoted the first stream, said method comprising the following steps: - dividing said first stream into a plurality of consecutive sequences on the basis of at least one transmission characteristic associated with each of said sequences, said division being triggered by the transmission of said first stream by said communication terminal, each of the sequences being associated with a transmission characteristic belonging to the group comprising: ∘ a transmission characteristic defining that the associated sequence is of private character; and ∘ a transmission characteristic defining that the associated sequence is of public character; for at least one of said sequences, called the given sequence, the transmission characteristic associated with said given sequence being defined automatically, taking into account at least one of the information items belonging to the group comprising: ∘ a characteristic of a means for acquiring said given sequence, which means is comprised in said communication terminal; ∘ a characteristic relative to the content of said given sequence; and ∘ a geo-location of said communication terminal and/or a site of occurrence of said event; - replacing, in said first stream, at least one portion of a first sequence that is associated with a predetermined transmission characteristic with at least one portion of a second sequence, which is identified on the basis of at least one transmission characteristic, of at least one second multimedia stream relative to said event, said second stream being distinct from said first stream, said at least one portion of said second sequence being of the same time range as said at least one portion of said first sequence, said at least one portion of said second sequence being selected depending on said predetermined transmission characteristic associated with said first sequence, generating an optimized multimedia stream, and in that it furthermore comprises a prior step of identifying said event, delivering information identifying said event comprising at least one temporal and geographic delineation of said event. - dividing said first stream into a plurality of consecutive sequences on the basis of at least one transmission characteristic associated with each of said sequences, said division being triggered by the transmission of said first stream by said communication terminal, each of the sequences being associated with a transmission characteristic belonging to the group comprising: ∘ a transmission characteristic defining that the associated sequence is of private character; and ∘ a transmission characteristic defining that the associated sequence is of public character; for at least one of said sequences, called the given sequence, the transmission characteristic associated with said given sequence being defined automatically, taking into account at least one of the information items belonging to the group comprising: ∘ a characteristic of a means for acquiring said given sequence, which means is comprised in said communication terminal; ∘ a characteristic relative to the content of said given sequence; and ∘ a geo-location of said communication terminal and/or a site of occurrence of said event; ∘ a transmission characteristic defining that the associated sequence is of private character; and ∘ a transmission characteristic defining that the associated sequence is of public character; ∘ a characteristic of a means for acquiring said given sequence, which means is comprised in said communication terminal; ∘ a characteristic relative to the content of said given sequence; and ∘ a geo-location of said communication terminal and/or a site of occurrence of said event; - replacing, in said first stream, at least one portion of a first sequence that is associated with a predetermined transmission characteristic with at least one portion of a second sequence, which is identified on the basis of at least one transmission characteristic, of at least one second multimedia stream relative to said event, said second stream being distinct from said first stream, said at least one portion of said second sequence being of the same time range as said at least one portion of said first sequence, said at least one portion of said second sequence being selected depending on said predetermined transmission characteristic associated with said first sequence, generating an optimized multimedia stream, and in that it furthermore comprises a prior step of identifying said event, delivering information identifying said event comprising at least one temporal and geographic delineation of said event.