Can Apple TV control the volume on a television or sound system?

Apple TV indeed has the capability to control the volume on a television or sound system. This functionality is achieved through the use of HDMI-CEC (Consumer Electronics Control), which allows users to command the volume when connected via HDMI to a compatible device. Additionally, the Apple TV's remote features IR (infrared) technology to communicate with TVs and sound systems that do not support HDMI-CEC, granting it further versatility in controlling volume across a range of devices. In the event that automatic setup does not work, users have the option to manually program their Apple TV remote to recognize and manipulate their specific TV or sound system’s volume controls, ensuring seamless integration into their home entertainment setup.