Sun Microsystems 2.1 manual Fast Ethernet Addressing, Thomson Electronics Encapsulation

7.4.2MPEG-2 Program Stream Packet Encapsulation

The MPEG-2 Program Stream is not defined to have any fixed packet size by the MPEG-2 standard. The server delivers UDP packets with payload containing MPEG data of size corresponding to seven MPEG-2 transport packets or 1316 bytes for the program stream encapsulation. This encapsulation uses the same Ethernet packet size as is used for the MPEG-2 Transport Stream.

7.4.3MPEG-1 System Stream Packet Encapsulation

The MPEG-1 System Stream is not defined to have any fixed packet size by the MPEG-1 standard. The server delivers UDP packets with payload containing MPEG data of size corresponding to seven MPEG-2 transport packets or 1316 bytes for the program stream encapsulation. This encapsulation uses the same Ethernet packet size as is used for the MPEG-2 Transport Stream.

7.4.4Thomson Electronics Encapsulation

The encapsulation supported here consists of multiple TCE MPEG packets as payload of UDP over IP, which provides a connectionless transport mechanism. The number of TCE MPEG packets for every UDP payload is eleven, which is the maximum number of 130-byte TCE transport packets that fits in the largest allowable Ethernet packet of 1500 bytes.

7.5Fast Ethernet Addressing

The server delivers video data to a specified IP hostname and UDP port number. Therefore, the data endpoint address is described by the concatenation of an IP hostname and UDP port.

You specify the destination address with the MSMC API’s msmSetConnect() function. You fill in an instance of the MsmConnect structure before calling msmSetConnect(). This structure contains an destTiAddr field, which holds a string. This field determines the destination address to which the server delivers data. The address is a string of the following format:

host=<IP hostname>,udpport=<UDPport num>

Chapter 7 Server Output Data Format 7-7