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How do I change the resolution of my TV when using HDMI input?

The maximum resolution your TV can display is determined by its HDMI version, with HDMI 2.1 supporting up to 8K resolution at 60Hz.

The display settings menu on your TV may be hidden under different categories, such as "Display Settings", "Picture Settings", or "HDMI Settings", depending on the brand and model of your TV.

The "HDMI Scaling" slider on some TVs, like Samsung, can adjust the screen size to fit the entire screen or fill the entire screen, even if the resolution is not optimal.

Most modern TVs have multiple HDMI ports, and each port may have different settings or capabilities, such as 4K resolution at 60Hz on one port, and 1080p on another.

Your TV's aspect ratio can be adjusted separately from the resolution, with common options including 16:9, 4:3, and Letterbox.

Some TVs, like Samsung, have a "-fit to screen" option that can automatically adjust the resolution and aspect ratio to fit the TV screen.

The refresh rate of your TV, measured in Hz, affects the smoothness of motion on the screen, with higher refresh rates (e.g., 120Hz) providing a smoother experience.

The resolution and refresh rate of your output device, such as a computer, can affect the quality of the image on your TV.

Some GPUs, like AMD's Radeon RX 6000 series, have advanced display options that can resolve HDMI scaling problems and improve image quality.

The physical distance between the HDMI device and the TV can affect the signal quality and resolution, with longer cables potentially degrading the signal.

The type of HDMI cable used can also affect the resolution and quality of the image, with high-speed HDMI cables supporting higher resolutions and refresh rates.

Some TVs have a "Game Mode" or "PC Mode" that can optimize the display settings for gaming or computer use, respectively.

The DisplayPort interface, commonly used on computers, can support higher resolutions and refresh rates than HDMI, making it a better option for some applications.

The output resolution of your device, such as a computer, may need to match the supported resolution of the TV to ensure optimal image quality.

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