"Identify high-bandwidth ports: Check your TV's HDMI labels for terms like "4K 120Hz," "8K," or "HDMI 2.1." If you don't see any, they're likely standard HDMI 2.0. When in doubt, check your user manual. HDMI 2.1 ports support higher resolutions and frame rates, so plug devices such as your PS5 or gaming PC into these, and you'll unlock advanced features like VRR."
"Use the ARC/eARC port for audio: If you have a soundbar or home theater receiver, plug it into the HDMI port labeled "ARC" or "eARC." I always use the eARC port on my TVs at home when connecting soundbars. That's because eARC is the newer, higher-bandwidth version and supports uncompressed, high-bitrate audio like Dolby Atmos, DTS:X, and other lossless form"
Choosing the proper HDMI port and cable and adjusting TV settings can noticeably improve picture and sound quality. High-bandwidth HDMI 2.1 ports enable higher resolutions and frame rates and unlock features like VRR for gaming consoles and PCs. Ports labeled ARC or eARC should host soundbars or receivers to support high-bitrate, uncompressed audio formats such as Dolby Atmos and DTS:X. Identifying port capabilities requires checking HDMI labels or the user manual. Routine checks of ports, cable quality, and correct port assignments can prevent HDMI issues and boost overall performance.
Read at ZDNET
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