Envivio and Comtech EF Data announced a Digital Satellite News Gathering (DSNG) solution based on Comtech EF Data's IP satellite modems with Turbo Product Coding (TPC) and Envivio's MPEG-4 platform. The companies claim its solution would cut the cost of satellite transmissions by 50 percent.
The combination of MPEG-4 video coding and Turbo Forward Error Correction coding enables broadcasters to transmit at half the bandwidth of the MPEG-2/DVB-S systems they are currently using. On the uplink side of the transmission chain, the Envivio LB-4100 real-time MPEG-4 encoder interfaces directly to the Comtech EF Data CDM-IP 300L modulator via an IP interface. On the downlink side, the CDM-IP 300L demodulator receives the IP stream from the satellite and interfaces with one of Envivio's MPEG-4 decoders.
The system can be used for live encoding or offline encoding with store and forward to the receive site. The encoder can be set up to automatically save the session as an MPEG-4 file.