Until analogue systems completely disappear, there are numerous applications, where analogue PAL signals need to be converted to digital data streams. In order to avoid excessively high data rates, in the course of the conversion applying some kind of compression procedure (MPEG-2, MPEG-4 etc.) becomes necessary. The device receives composite video signals at its BNC sockets, asymmetrical or symmetrical audio signals at its RCA or XLR sockets, and after digitizing and compressing them it delivers MPEG-2 single-program transport streams at its IP or ASI outputs.
It is available in duo version (two independent encoder units in one frame) and in quad version (four independent encoder units in one frame).
The MPEG-2 compression can be performed to fixed data rate or to data rate varying with the picture content. The kind of compression and its parameters can be programmed by the user. In the practice data rates between 3 and 4 Mbit/s yield excellent picture quality. The sound channel input signal will be converted by a dual channel encoder performing MPEG-1 layer I/II compression. The sampling frequency is programmable, and the output data rate can be set between 32 and 448 kbit/s.