Methods, systems, and media for controlling audio of an hdmi audio system

A system for controlling audio of an HDMI audio system, the system comprising:

• a hardware processor that is programmed to:
• cause audio data to be presented by an HDMI audio system at a current system volume level of the HDMI audio system;
• receive a requested volume level from a second screen device;
• and
• control a system volume level of the HDMI audio system by:
• (a) determining the current system volume level of the HDMI audio system;
• (b) determining a change in volume based on a difference between the requested volume level and the current system volume level;
• (c) determining a direction in which to cause the system volume level to change;
• (d) sending a volume control message to the HDMI audio system using a consumer electronic control bus connected to the HDMI audio system, wherein the volume control message indicates whether to increase or decrease the system volume level based on the determined direction in which to cause the system volume to change;
• and
• (e) repeating (a)-(d) until the current system volume level reaches a predetermined value.

A non-transitory computer-readable medium containing computer executable instructions that, when executed by a processor, cause the processor to perform a method for controlling audio of an HDMI audio system, the method comprising:

• causing audio data to be presented by an HDMI audio system at a current system volume level of the HDMI audio system;
• receiving a requested volume level from a second screen device;
• controlling a system volume level of the HDMI audio system by:
• (a) determining the current system volume level of the HDMI audio system;
• (b) determining a change in volume based on a difference between the requested volume level and the current system volume level;
• (c) determining a direction in which to cause the system volume level to change;
• (d) sending a volume control message to the HDMI audio system using a consumer electronic control bus connected to the HDMI audio system, wherein the volume control message indicates whether to increase or decrease the system volume level based on the determined direction in which to cause the system volume to change;
• and
• (e) repeating (a)-(d) until the current system volume level reaches a predetermined value.