![]() It wasn’t until a later revision of the HDMI standard (HDMI 1.4) that this began to change. The only exception to this is HDMI Consumer Electronics Control (CEC) - a very low-bandwidth set of commands that could be sent in both directions along an HDMI cable so that a TV’s remote could control an AV receiver’s volume or the power button on an AV receiver’s remote could turn off a TV. ![]() Audio and video traveled from a source device to a TV (or projector) and never the other way around. When it was introduced, that digital superhighway was limited to a single direction of flow. Everything you need to know about HDMI 2.1īefore we get into HDMI ARC/eARC, let’s quickly recap what an HDMI connection does: It can send digital video and audio from one device to another using a single cable. ![]() And since the technology is incredibly useful and has the potential to significantly simplify your entertainment system in a myriad of ways, we’re going to explain it all, including its most recent evolution, known as “eARC”: Enhanced audio return channel. Fitbit Versa 3īut despite its nearly universal implementation, not everyone knows what ARC is or what it does.
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