Method and system for splicing advertisement, splicer, and head end device

A system for splicing an advertisement, comprising a head end device and a splicer, wherein:

• the head end device is configured to:
• perform real-time transport protocol encapsulation processing on coded video, to obtain at least one of a real-time transport protocol packet and a real-time transport protocol control protocol packet;
• and carry splice information in the obtained real-time transport protocol packet or real-time transport protocol control protocol packet, and send the real-time transport protocol packet or real-time transport protocol control protocol packet to the splicer, so that the splicer splices a received targeted advertisement into an advertisement avail of video data according to the splice information in the received real-time transport protocol packet or real-time transport protocol control protocol packet;
• and
• the splicer is configured to:
• receive the real-time transport protocol packet or real-time transport protocol control protocol packet that carries the splice information;
• and splice the received targeted advertisement into the advertisement avail of the video data according to the splice information in the real-time transport protocol packet or real-time transport protocol control protocol packet.