Serial Data Transport Interface

SDTI stands for Serial Data Transport Interface. The SDTI Standard according to the SMPTE 305M standard describes the transmission of compressed digital video data using the SDI data stream. In this case, an existing SDI infrastructure can be used.

Background

Digital video data require a lot of memory, which is why used in most cases for storing a video compression. If stored compressed digital video is transmitted via SDI, it must at the source ( setter ) be decompressed ( SDI transmits unkomprimert ) and for storage in the Valley (Recorder) again be compressed. This combination of de-and recompression of lossy data compression leads to loss of quality.

SDTI avoids these Rekompressionen because the digital video data is transmitted in the original compression ( native). Thus, the transfer process is lossless. By the known compression of video data is possible with the SDTI faster than real-time transfer such as SDI. The factor for the faster transfer of results from the existing SDI bit rate and the bit rate of the transmitted digital compressed video signal.

SDTI was created to standardize the various proprietary interfaces of the system manufacturer to the native compressed video transmission. An SDTI transmission is only possible between two components which use the same compression (codec).

Similar techniques

When dubbing from digital video ( such B) transferred from a DV camcorder to a computer via FireWire as SDTI compressed digital video data.

SDTI -CP ( Serial Data Transport Interface - content package ) is used for the transmission of I-frame based MPEG-2 digital video streams at specific brand used.