original_query: What is the purpose of the Serial Digital Interface (SDI)?
query: What is the purpose of the Serial Digital Interface (SDI)?
answer: The Serial Digital Interface (SDI) transmits uncompressed, unencrypted digital video signals (optionally including embedded audio and time code) within television facilities; it can also be used for packetized data.  It connects equipment like recorders, monitors, PCs, and vision mixers.