Modern. 4K-TVs like Xiaomi Mi TV 4S, The matrix has impressive potential, but factory settings are often far from ideal. Manufacturers default to brightness and saturation in modes designed to highlight the device in the store window, but at home this leads to unnatural colors and excessive sharpness. HDR-content and make a picture of cinematic.
4S owners often face the need to manually adjust settings to get rid of digital noise in dark scenes or, conversely, from the “soap” in dynamic games. The setup process does not require professional equipment, but requires an understanding of what each parameter in the Android TV menu is responsible for. In this article, we will break down the finer settings that are rarely discussed in standard instructions.
Before making any changes, you need to choose the right signal source. Xiaomi PatchWall’s built-in apps or streaming services can handle video in different ways, so basic calibration is better done on reference content in high resolution, which will ensure that the settings are versatile for most scenarios of use of your media center.
Choosing the optimal image mode
The first step should always be to choose a basic profile. In the Settings menu → Image you will find several preset scripts, such as Standard, Bright, Cinema and Sport. For watching movies and TV shows, the most accurate color reproduction is usually provided by the Movie or Movie mode, which tries to adhere to the standards of directorial idea.
Bright or Vivid is often the default mode, but it artificially upsizes blue and green, making the picture unnatural and eye-wasting for long-term viewing. If you use a TV for gaming, switch to Game or Game mode, which minimizes input delay (Input Lag), sacrificing some post-processing algorithms for response speed.
It's important to understand that the mode you choose is the foundation for all subsequent settings. The changes you make to contrast or hue settings will apply to the active profile. So if you're watching mainly YouTube and Netflix, set up the Standard profile, and if you're playing on consoles, create a separate configuration for the game mode.
⚠️ Note: Do not use Bright mode in a darkened room, as high brightness and cold color temperature can cause rapid eye fatigue and headache.
Basic adjustment of brightness and contrast
Brightness and contrast are critical for the correct display of dynamic range. Contrast is responsible for the difference between the lightest and darkest areas of the frame. On Xiaomi 4S HDR-enabled TVs, it is better not to twist this parameter 100%, so as not to lose detail in light areas, such as clouds or highlights.
Brightness (sometimes referred to as "Backlight" or "Lighting") regulates the intensity of the glow of the matrix itself. SDR-content (ordinary TV) in a dark room will be comfortable value 40-50%, then HDR-This parameter automatically rises to a maximum. HDR-The mode can deprive the image of its main advantage - the depth of light.
You should also look at the Local Dimming option, if available in your firmware version, which allows the TV to independently control the brightness of different areas of the screen, making black truly deep rather than gray. However, on budget models, aggressive local dimming can cause halo artifacts around bright objects on a dark background.
💡
To check for the black setting, look up the Black Level Test online or turn on the dark scene in the movie. You should distinguish between shades of black, not see a solid black spot.
The optimal values depend on the lighting in your room. In the daytime with the bright sun outside, it makes sense to raise the backlight to beat the glare, and in the evening, these values should be lowered. There is no universal recipe, but the middle ground is usually in the middle of the scale.
Color rendering and shade setting
Color temperature is a parameter that determines how much an image will be “warm” (yellowish) or “cold” (bluish). The standard value for the film industry is 6500K, which corresponds to the “Warm” or “Warm” mode in the Xiaomi TV settings. Many users habitually choose “Cold” mode, considering it to be more crisp, but in fact it distorts the color of the skin and nature.
Saturation is responsible for the intensity of colors. Too high saturation makes the picture look like a cartoon, where the faces of the actors turn orange and the grass turns unnaturally poisonous green. It is recommended to keep this parameter at 50-55% to keep the image natural without losing its vivacity.
Tint regulates the balance between green and purple. In modern digital signals, this parameter rarely requires correction, since the source of the signal already transmits the correct data. However, if you connect old consoles through a composite input (via an adapter), tweaking the shade may be necessary to eliminate the greenish or purple plaque in the image.
| Parameter | Recommended value | Impact on the picture |
|---|---|---|
| Color temperature | Warm/Warm | Makes white natural, removes blue |
| Saturation | 50-55% | Determines the depth and liveliness of flowers |
| Tint (Tint) | 50% (Middle) | Balance of green and purple |
| Color coverage | Auto/Native | Expands the gamut for HDR content |
Why does white appear yellow?
Improved detailing and noise elimination
Noise Reduction algorithms are designed to remove digital “junk” that is often seen in dark scenes or when watching low-quality cable TV. On Xiaomi 4S TVs with diagonals of 43 and 65 inches, compression artifacts can be noticeable, so a light degree of noise cancellation (Low) is acceptable for analog TV.
To view Blu-ray discs or 4K-Noise reduction is better turned off or minimized. Aggressive processing eats away at small details, blurring the textures of skin and tissues. This phenomenon is often called the wax face effect».
Sharpness is another insidious parameter, and factory value is often overstated, creating light halos around objects. 4K-Content can be easily reduced to 10-20% before 0%. This will make the image softer, but detailed, without digital artifacts.
⚠️ Attention: High level of field does not add real details to the picture, but only creates the illusion of clarity due to contrasting boundaries, which worsens the overall perception of the image.
The special feature, "MPEG noise reduction," is specific to compressed video, and if you see squares in gradients (like the sky), turning on this filter can help, but be aware of the risk of losing detail.
Settings for Gaming and Dynamic Content
For PlayStation 5, Xbox Series X or high-end PCs, late entry is critical. To activate mode with minimal lag, you not only need to select a Game profile, but also make sure that all heavy image processing algorithms are disabled. In some versions of MIUI for TV, this happens automatically when you detect the console.
The matrix refresh rate in Xiaomi 4S is 60Hz, which is the standard for most TVs in this class. However, it is important to properly configure the output of the image from the console. In the settings of the console itself, make sure that the resolution is 2160p and, if supported, HDR mode is selected.
☑️ Checklist settings for games
If you use the TV as a PC monitor, make sure that the graphics card settings are RGB or YCbCr 4:4:4 color format, rather than compressed formats like 4:2:0, otherwise the text will be unreadable due to color subsampling.
💡
For games, the priority is response speed, so all image enhancement functions (smoothing, noise reduction) should be turned off, even to the detriment of picture quality in statics.
Advanced settings and color calibration
The advanced settings menu of Xiaomi 4S often hides gamma and color gamma options. Gamma determines how the average tones are displayed. The standard value for dark rooms is gamma 2.2, and for brightly lit rooms is 2.0. Changing this parameter affects the overall “heaviness” of the picture.
Dynamical Contrast tries to automatically adjust brightness based on the content of the frame. While the idea sounds good, in practice it often causes brightness to jump in the middle of the scene: in a dark episode, the screen suddenly becomes brighter, and in a light episode, it dims. For quality content, this feature is better to turn off.
Color Gamut is best left in Auto or Native mode. Forced coverage on content that has not been shot in a wide color space will lead to oversaturation and color distortion. HDR10 Or Dolby Vision.
If you feel that the colors are still “wrong,” you can try resetting the image to the factory settings and start calibrating again using the reference video. Sometimes a software glitch in the firmware can incorrectly apply saved profiles.
⚠️ Note: Do not change the values in the engineering menu (if you have access to it) if you do not understand the purpose of each parameter.