Method for time-stamping a data stream organised in successive packets, in an SFN network with DVB-T2 architecture, characterised in that it comprises, for at least one packet of said data stream, a time-stamping step comprising the following sub-steps and delivering at least one time-stamped packet: ▪ determination of at least one piece of time information; ▪ addition, to said packet, of at least one time-stamp field comprising at least said time information, said time-stamp field comprising two parts, a first part representing seconds and a second part representing nanoseconds; said determination step comprising the following sub-steps: - when said packet is a packet of the type "T2-MI DVB-T2 Timestamp" or "MPEG-TS T2-MIP": ∘ obtaining a first piece of time information, called integer time information, from the "second_since_2000" field and representing seconds, and a second piece of time information, called decimal time information, from the value of the "subseconds" field converted into nanoseconds, ∘ initialisation of said first and second parts of said time-stamp field respectively with said integer and decimal information obtained, - and, for the packets following the first time-stamped packet with said initialised time-stamp field: ∘ determination of the duration of said packet, from a determined size of said packet and from a determined rate of said given stream; ∘ updating of said parts of said time-stamp field as a function of said determined duration of said packet and of said integer and decimal time information previously obtained at a prior determination stage for a packet distinct from said packet of the type "T2-MI DVB-T2 Timestamp" or "MPEG-TS T2-MIP". ▪ determination of at least one piece of time information; ▪ addition, to said packet, of at least one time-stamp field comprising at least said time information, said time-stamp field comprising two parts, a first part representing seconds and a second part representing nanoseconds; - when said packet is a packet of the type "T2-MI DVB-T2 Timestamp" or "MPEG-TS T2-MIP": ∘ obtaining a first piece of time information, called integer time information, from the "second_since_2000" field and representing seconds, and a second piece of time information, called decimal time information, from the value of the "subseconds" field converted into nanoseconds, ∘ initialisation of said first and second parts of said time-stamp field respectively with said integer and decimal information obtained, ∘ obtaining a first piece of time information, called integer time information, from the "second_since_2000" field and representing seconds, and a second piece of time information, called decimal time information, from the value of the "subseconds" field converted into nanoseconds, ∘ initialisation of said first and second parts of said time-stamp field respectively with said integer and decimal information obtained, - and, for the packets following the first time-stamped packet with said initialised time-stamp field: ∘ determination of the duration of said packet, from a determined size of said packet and from a determined rate of said given stream; ∘ updating of said parts of said time-stamp field as a function of said determined duration of said packet and of said integer and decimal time information previously obtained at a prior determination stage for a packet distinct from said packet of the type "T2-MI DVB-T2 Timestamp" or "MPEG-TS T2-MIP". ∘ determination of the duration of said packet, from a determined size of said packet and from a determined rate of said given stream; ∘ updating of said parts of said time-stamp field as a function of said determined duration of said packet and of said integer and decimal time information previously obtained at a prior determination stage for a packet distinct from said packet of the type "T2-MI DVB-T2 Timestamp" or "MPEG-TS T2-MIP".