| 摘要 |
A transmission method for transmitting, over a communication network, a video signal pre-coded using hierarchical coding comprises the steps of periodically estimating (S41) the bandwidth (BW(t)) of the communication network over evaluation periods, and for a current evaluation period, selecting (S42) a set of hierarchical levels (Li(t)), compatible with the estimated bandwidth (BW(t)). It further comprises the steps (S43, S44) of estimating a change tendency of the bandwidth (BW); of determining (S50, S60) additional data of the video signal to transmit depending on the estimated change tendency of the bandwidth; and of transmitting (S51, S54, S55, S61, S64, S65) the data of the selected hierarchical levels and determined additional data during the current evaluation period. Use among others for transmitting a signal coded in accordance with the SVC standard.
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