4K HDMI encoders connect an HDMI source to the encoder, then use an Ethernet network connection to send the encoded video through a compatible gigabit switch to networked receivers or decoders. Many systems can use existing Category cable, including Cat 5e, while Cat 6a or fiber may suit projects with specific bandwidth, distance, or infrastructure requirements.

Verify that the 4K HDMI encoder supports the source’s resolution and timing, including 4K at 60 Hz, 4:4:4 color, and the required HDR formats such as HDR10, HDR10+, HLG, or Dolby Vision. Confirm the encoder and connected devices support the source’s copy-protection level, including HDCP 2.2 or HDCP 2.3, and check that the full signal path maintains compatibility.

Single-channel 4K HDMI encoders handle one HDMI source per unit, making them well suited for systems that need individual source placement, wallplate installation, or gradual expansion. Dual-channel encoders handle two independent HDMI sources in one enclosure, which can increase source density and help conserve rack space in centralized equipment locations.

Look for 4K HDMI encoders with audio extraction, embedded audio support, and downmixing from multichannel formats to stereo when a system feeds both surround and two-channel zones. For system control, consider models that support IR, RS-232, CEC, or IP pass-through, with USB support available when the installation requires keyboard, video, and mouse functionality.