How to turn on HDR on Xiaomi Mi TV 4A

Owners of budget models often wonder how to turn on HDR on the Xiaomi Mi TV 4A, as this feature significantly improves the color gamut and contrast of the picture. Xiaomi Mi TV 4A is equipped with support for the HDR10 standard, which allows you to display a wider dynamic range of brightness when viewing compatible content. However, automatic mode switching is not always correct, requiring manual user intervention in system settings.

Activation of the extended dynamic range is possible only under a number of technical conditions relating to both the TV itself and the signal source. HDR-content requires high data channel bandwidth, so use old cables HDMI This may result in the image being broadcast in the normal SDR In this article, we will discuss in detail the algorithm of actions for forcing the function to turn on and eliminating typical errors.

It should be noted that Android TV, on the basis of which the TV shell works, has its own features of recognizing video stream formats. Sometimes the system does not see HDR metadata automatically, and the user has to choose the mode of operation of the HDMI port.

Verification of format and technical requirements support

Before you start setting up, you need to make sure that your video source does support HDR10 data transfer. Xiaomi Mi TV 4A does not support Dolby Vision, so attempts to activate this format in the streaming service menu will be unsuccessful. The main standard for this line of TVs is HDR10, which provides 10-bit color depth.

An HDMI cable is a critical element of the circuit. High-resolution, dynamic range-enhanced signaling requires HDMI 2.0 or higher cables that support HDCP 2.2. If you use an older version 1.4 cable, the TV will not be able to physically retrieve the required amount of data and the image will remain in the standard range.

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Use HDMI cables labeled "High Speed" or "Premium High Speed" to ensure stable HDR transmission without artifacts.

You should also check the operating system version. Go to the settings menu and select About TV to see the current firmware version. Developers regularly release updates to improve compatibility with various media players and consoles.

• 📺 Make sure the content is marked with an icon HDR menu.
• 🔌 Check that the cable HDMI port-connected 4K.
• ⚙️ Update your TV firmware to the latest available version.

⚠️ Note: If you connect a game console or PC, make sure that the video output settings on the device are also forced on mode HDR, Otherwise, the TV will not receive the signal.

Configure HDMI ports to work with HDR

The most common reason for not having extended dynamic range is because of the input ports themselves. By default, ports can operate in compatibility mode that limits bandwidth. To activate full potential, you need to switch a particular port to HDMI 2.0 mode.

To do this, go to the main menu and select Settings. Follow Settings → Entry (or Ports). In the list that opens, you will see all available HDMI connectors. Select the port your device is connected to and change the format from "Auto" or "1.4" to "HDMI 2.0".

Once the setting is changed, the TV can briefly turn off the screen to reconfigure the video driver, which is normal for the system, and if the image is gone, try turning off and reconnect the HDMI cable without changing the port settings.

It's important to understand that once the port is switched to 2.0, the old devices may stop being identified, and if you plug in an ancient set-top box, you may have to reset the settings.

Activate HDR through the image menu

Once you have set up ports, you should check the global image settings. In some versions of PatchWall firmware or pure Android TV, you can prioritize certain modes. Open the Settings menu and go to Image.

You're interested in Image Mode here. Standard modes like Standard or Movie may not activate. HDR Try to choose Bright or Sport mode, as they often have more aggressive contrast settings that interact better with the other side of the game. HDR-content.

Note the Local Contrast option, if available in your model, and enabling it helps the matrix better display dark and light areas, which is the essence of HDR technology. However, over-increasing this parameter can lead to "noise" in the shadows.

• 🎨 Select the Bright Image Mode for testing.
• 🌓 Activate the Local Contrast Function.
• 🔇 Turn off all energy-saving screen modes.

Remember, the settings only apply to the current signal source, and if you switch to embedded applications, the settings may reset and have to be adjusted anew for each input.

Set up HDR in popular applications

Even with the right setup of the TV, the apps themselves can block HDR output. On YouTube, for example, you need to manually select video quality. Click on the gear in the player, select Quality, and make sure that HDR is marked next to the 2160p resolution.

Streaming services like Netflix or Amazon Prime Video are more complicated. Playing HDR on Xiaomi Mi TV 4A often requires a security certificate and premium subscription, and if an account does not support 4K HDR, the service will automatically downgrade to Full HD SDR.

For built-in Mi Video media player or third-party solutions like VLC or Kodi, it's important that the video file contains the correct metadata, if the file is damaged or lost. HDR-The TV will not be able to activate the mode, no matter how much you change the settings.

⚠️ Note: When viewing through a browser on a TV (Chrome) technology HDR Often does not work due to restrictions. DRM and lack of hardware acceleration in web versions of players.

It is recommended to use native apps from the Google Play Store, as they are better optimized for the Android TV operating system and have direct drivers to work with the TV decoder.

Solving black screen and flickering problems

Sometimes when you try to turn on HDR, you'll see a black screen or a constant flicker of the image, which indicates that the bandwidth of the cable or port is not enough to transmit the signal. Try replacing the HDMI cable with a better, certified 4K.

Another reason could be a permission conflict: Make sure the TV screen settings are set to 3840x2160 resolution and 60Hz. Some signal sources are trying to deliver 4K at 30Hz, which is not enough for full-fledged HDR.

If the problem persists, reset the image settings to factory values. Go to Settings → Image → Reset. This will remove any custom calibrations that may conflict with the new display mode.

• 🔄 Replace the cable. HDMI High Speed certified.
• ⚡ Check the refresh rate of the screen (should be 60 Hz).
• 🗑️ Perform a reset of image settings.

In rare cases, a complete reset of the TV to factory settings through the system menu helps, but this is an extreme measure that requires re-authorization in all accounts.

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Signal stability is more important than maximum settings: if the picture flickers, lower the source requirements or replace the cable before changing the TV settings.

Using external devices for HDR

The built-in capabilities of Xiaomi Mi TV 4A may be limited, so many users connect external media players such as Apple TV 4K, Nvidia Shield TV or PlayStation 4 Pro/Xbox One S game consoles.

When using an external console, the settings of the TV fade into the background, the main thing is the video output menu on the device itself. For example, on Xbox you need to go to Settings → Display & Sound → Video output and (check) opposite HDR and 4K.

The advantage of external devices is that they have more powerful processors that are better at upscale and tonal compression if the TV matrix can't display the full brightness of the source, which allows you to get a high-quality picture even on budget panels.

Using an external console is the most reliable way to ensure HDR performance, as you minimize the impact of software bugs on the TV operating system.