Time synchronization method for multi-point recording, server and system

The invention discloses a time synchronization method for multi-point recording, a recording server and a content delivery network, and relates to the technical field of communication. The method includes: the recording server receives an RTP data packet sent by a head-end system; the recording server obtains HLS slice information carried by the RTP data packet; and the recording server records aload of the RTP data packet as media data in the HLS protocol format according to the HLS slice information. According to the method, the recording server and the content delivery network, the consistency of generated data recorded by different recording servers can be guaranteed, the consistency of the generated data of the different recording servers is realized, the live broadcasting and time shifting services can be carried through RTP multicast and HLS unicast, the network cost can be reduced, the node performance resource consumption is reduced, and the watching experience of users is enhanced. 本发明公开了种用于多点录制的时间同