Apparatus and method for digital stream conversion

A digital stream conversion method for outputting a digital stream having a packetized format at a rate which is slower than an input rate, comprising:

• a time stamp assignment step of assigning, as a time stamp for each packet in an inputted digital stream comprising a plurality of packets, an input time of the packet;
• a packet reduction step of deleting deletable packets from the inputted digital stream, wherein the deletable packets are packets which appear in the digital stream with a predetermined repetition pattern;
• a time stamp replacement step of, based on a proportion of the deletable packets in the digital stream, replacing the time stamps assigned to the packets which have not been deleted by the packet reduction step;
• and
• a packet output step of outputting the packets which have been processed by the time stamp replacement step, such that each packet is outputted at a time indicated by the time stamp assigned to the packet.

A program for causing a computer to execute a digital stream conversion method for outputting a digital stream having a packetized format at a rate which is slower than an input rate, the method comprising:

• a time stamp assignment step of assigning, as a time stamp for each packet in an inputted digital stream comprising a plurality of packets, an input time of the packet;
• a packet reduction step of deleting deletable packets from the inputted digital stream, wherein the deletable packets are packets which appear in the digital stream with a predetermined repetition pattern;
• a time stamp replacement step of, based on a proportion of the deletable packets in the digital stream, replacing the time stamps assigned to the packets which have not been deleted by the packet reduction step;
• and
• a packet output step of outputting the packets which have been processed by the time stamp replacement step, such that each packet is outputted at a time indicated by the time stamp assigned to the packet.

A computer-readable recording medium having recorded thereon a program for causing a computer to execute a digital stream conversion method for outputting a digital stream having a packetized format at a rate which is slower than an input rate, the method comprising:

• a time stamp assignment step of assigning, as a time stamp for each packet in an inputted digital stream comprising a plurality of packets, an input time of the packet;
• a packet reduction step of deleting deletable packets from the inputted digital stream, wherein the deletable packets are packets which appear in the digital stream with a predetermined repetition pattern;
• a time stamp replacement step of, based on a proportion of the deletable packets in the digital stream, replacing the time stamps assigned to the packets which have not been deleted by the packet reduction step;
• and
• a packet output step of outputting the packets which have been processed by the time stamp replacement step, such that each packet is outputted at a time indicated by the time stamp assigned to the packet.