ASI Recording

Asynchronous Serial Interface, or ASI, is streaming data format which often carries an MPEG Transport Stream (MPEG-TS).
An ASI signal can carry one or multiple SD, HD or audio programs that are already compressed, not like an uncompressed SD-SDI (270Mbs) or HD-SDI (1.45Gbs). An ASI signal can be at varying transmission speeds and is completely dependent on the user's setup requirements.
Generally, the ASI signal is the final product of video compression, either MPEG2 or MPEG4, ready for transmission to a transmitter or microwave system or other device. There are two transmission formats commonly used by the ASI interface: the 188 byte format and the 204 byte format. The 188 byte format is the more common ASI transport stream. When optional Reed-Solomon error correction data is included the packet can stretch an extra 16 bytes to 204 bytes total.

Using Logdepot for ASI Recording
LogDepot is capable of recording transport streams over ASI directly.
It supports both MPTS (Multi Program Transport Stream) and SPTS (Single Program Transport Stream). LogDepot can capture the full ASI stream without processing, for analyzing purposes, or it can demultiplex the ASI stream into single program streams and store them in original format and in a proxy format for easy browsing. In the latter situation ASI acts as a very efficient interface for mutliple audio and video (SD and HD) streams.