This document specifies a command set used to control consumer electronic audio/video equipment. The command set builds upon an extensive body of standards work, underway and completed, as referenced in section 1. Serial Bus, an IEEE standard, is the digital interface used to transport commands from controllers to AV devices (targets) and to return responses to the controllers. The unit architectures of these AV devices are defined within the scope of the configuration ROM and CSR architecture standardized by ISO/IEC. The commands themselves are encapsulated within a generic Function Control Protocol (FCP) developed by the HD Digital VCR Conference and now proposed as an IEC standard. Similarly, the format of the isochronous data itself has been developed by the HD Digital VCR Conference. This specification concerns itself narrowly with the syntax and semantics of a general set of commands transmitted by controllers to AV devices and the resultant actions that occur at the AV device. The suite of AV/C documentation has been separated into this general AV/C specification document and separate documents for each type of subunit (VCR, Tuner, Disc, etc.). The reader is strongly encouraged to read this document in conjunction with the references given below, as well as with any AV/C-related documents which may be created in the future.