| 摘要 |
For delivering an AV live content, time being divided into transmission periods, the AV live content being divided into chunks, a server device performs: obtaining at least one multicast reference stream (400) intended to transport one chunk (401) per transmission period; obtaining at least one multicast side stream (410) intended to transport, for each transmission period, a plurality of chunks (411, 412, 413) which at least comprises the same chunk (413) as in each multicast reference stream and at least one preceding chunk (411; 412); and synchronously transmitting each multicast reference stream and each multicast side stream along the transmission periods. A device willing to receive the AV live content performs: joining one said multicast side stream for obtaining at least one chunk transmitted in a first transmission period; and switching to one said multicast reference stream for obtaining subsequent chunks which are transmitted from a second transmission period following the first transmission period. |
