For application of DVB Over IP

one important issue is about how to transmit compressed variable bit rate(VBR) MPEG-2 transport stream video.Transmitting compressed VBR video with traditional constant bit-rate(CBR)service requires a large buffer at the end.Another new transmission schemes called PCR-assist CBR which reduces the buffer requirement at the cost of higher transmission rate and low stability.To balance the transfer rate and the need for buffer in receiver

this paper presents an improved algorithm of transmitting transport streams called IPCBR which is based on PCBR.Experiments show that compared with traditional constant bit-rate service

the algorithm reduces the buffer requirement

provides high stability and high use of bandwidth as well as overcomes the problem of packet loss.Besides

the algorithm focuses on DVB over IP

so it has high practicability and also is valuable for developing new operation of Internet TV.