DVB-ASI to IP Adapter

MPEG-2 Transport Stream (TS), containing AV content compressed by different algorithms (e.g. MPEG-2, MPEG-4, H.264 etc.) has to be often transmitted over long distance, while DVB-ASI physical layer supports distances only up to 300 m.

DVB-ASI to IP Adapter enables to transmit DVB-ASI / MPEG-2 TS via IP networks. At one end it converts DVB-ASI output interface into IP/Ethernet output and on another IP/Ethernet input into DVB-ASI output interface. This solution is independent from Video Compression so it can carry any AV streams in DVB-ASI MPEG-2 TS format via IP network.

MD DVB-IP Adapter significantly extends the distance and reduces communication costs. DVB-ASI to IP Adapter offers economical solution in various DVB network configurations (see Application examples).

DVB and IP networks differ from the synchronisation point-of-view. DVB has a strict requirements for precise PCR (programm clock reference) timing and low jitter, while IP networks have no such requirement. While encapsulation of TS packets into IP packets is simple task, regeneration of valid Transport Stream at another side from IP network is complicated process.

IP networks can loose packets more frequently, what, in case of transmitting packets of highly compressed Audio-Video signals, causes significant problems (in case of I frame losts for example). Due to the time delays it is impossible to deploy TCP/IP acknowledging mechanism to resend lost packets as they would not arrive in required time. In order to handle this problem FEC (Forward Error Correction) mechanism is employed to recover such packets losts.

MD DVB-ASI IP Adapter employs FEC according to Pro-MPEG Code of Practice #3 release 2 for transmitting Audio-Video signals via IP networks, what ensures interoperability with other vendors equipments.