Abstract: Embodiments of the present invention provide a method, apparatus and system for the control and optimization of playout devices such as displays and speakers. In various embodiments of the present invention, high definition multimedia interface (HDMI) applications are provided for communication between a control device and a content playout device for controlling the playout functionality of the content playout device using HDMI communication means and vendor specific commands. That is, associated control signals are provided for controlling or optimizing display and speaker settings for providing a desired viewing and listening experience. The concepts of the present invention provide for remote command of display functions and, in addition, for remote monitoring of display status and settings. In addition, applications are provided that lock out or limit the functionality of display and speaker controls from user inputs or settings.