Modern TVs like the Xiaomi Mi TV 4S 55 have impressive display performance, but the right initial configuration is required to unlock their full potential. Many users find that when they buy a device with advanced dynamic range, they don’t see any difference in picture quality compared to a regular TV. This is because HDR (High Dynamic Range) often doesn’t activate automatically or requires certain HDMI ports to be manually enabled.
In this article, we will discuss in detail how to turn on HDR on a Xiaomi Mi TV 4S 55 so you can enjoy bright colors and deep black shades. The setup process can seem confusing due to the features of the Android TV shell and the specifics of the IPS panel installed in this model. Understanding the technical nuances will avoid common errors when connecting external devices.
Before you jump to the settings menu, you need to make sure your content does support advanced dynamic range technology. 4K- Blu-ray player, game console or streaming service, TV will broadcast the image in standard mode SDR. We will look at all the stages: from checking the cable to fine-tuning the color rendering.
Verification of compatibility and requirements for the signal source
The first step towards quality image is hardware verification. The Xiaomi Mi TV 4S 55 supports HDR10 and HLG standards, but does not support Dolby Vision, which is important to consider when choosing content. If you are trying to play a file with a Dolby Vision tag, the TV will either show an error or convert the image to a standard HDR10, which can lead to incorrect color reproduction.
A critical element of the chain is HDMI-cable, for transmission 4K-signal HDR High-frequency staffing requires a standard cable HDMI 2.0 or higher, labeled "High Speed" or "Premium High Speed" HDMI 1.4 may miss the signal 4K, but only at 30 Hz and without support HDR, What makes the picture dull and jittery.
Also, pay attention to the source of the signal. Built-in TV apps like YouTube or Netflix automatically detect the display capabilities, but external devices (consoles, consoles) require manual adjustment. Make sure that the connected gadget also activates HDR mode in the video settings and selects the RGB or YCbCr color space 4:4:4.
⚠️ Attention: Use of cheap HDMI-unshielded cables may cause periodic signal loss or screen blinking when attempting to activate HDR.
There is a common misconception that any 4K-Content is automatically HDR. In fact, these are two different technologies: the resolution is responsible for the number of pixels, and HDR — And the quality of the light and the color in each pix, so even when you plug in. 4K-prefixes, if the settings of the console itself are not displayed HDR, The TV will work in normal mode.
📊 What signal source do you use most often?
Built-in Smart TV apps
Game console (PS5/Xbox)
TV-prefix Box/Apple TV)
computer or laptop
Satellite receiver
The most common reason why HDR It doesn’t work for Xiaomi Mi. TV 4S 55, is in the input port settings. By default, the TV can limit bandwidth. HDMI-To unlock the full power of the interface, you need to manually switch port modes.
To do this, you'll need a remote control, you'll need a standard navigation button to navigate the menu, and it's important to get into the system settings, not the specific application settings.
- 🎮 Click the "Menu" button or go to the user profile in the upper right corner of the screen.
- ⚙️ Select the Settings section (cog icon) and go to the General subsection.
- 🔌 Find the Entrances. HDMI or HDMI 2.0 Format.
- ✅ Select the desired port (for example, HDMI 1) and change the format from "1.4" to "2.0".
Once the format is changed to 2.0, the TV can (for a few seconds) lose its signal and emit a characteristic mode-switching sound, which is normal behavior, indicating that the video controller has rebooted to the new data transmission standard. HDR-Content appears to appear in the logo HDR, So the procedure was successful.
Setting up the image and screen modes
After the technical activation of the ports, you need to optimize the software settings of the image. IPS, model 4S 55, has its own features, such as wide viewing angles, but less deep black compared to the VA-So, fine-tuning helps to offset these physical limitations.
In the image menu (Settings) → Images are recommended to select a preset mode optimized for movies or games. Often, Mode "Movie" or "Standard" already contains calibration close to the Rec. 2020 standards used in mastering. HDR-Don't immediately increase the brightness and contrast to the maximum, which can lead to lights and loss of detail in light areas.
| Parameter | Recommended value | Description of the impact |
|---|
| Brightness (Backlight) | 80-100% | Determines the backlight power of the matrix, critical for HDR |
| Contrast | 90-95% | It is the difference between the brightest and the darkest. |
| Color temperature | Warm/Warm | Provides natural color reproduction close to DCI-P3 |
| Dynamic contrast | Off/Off | In HDR mode, this setting must be disabled. |
| Local blackout | Automobile | Controls backlight zones (if supported by algorithms) |
| Noise suppression | Min/Low | Excessive noise reduction eats details in the shadows |
You should pay special attention to the "dynamic contrast" or "dynamic contrast." SDR-It can be useful, but when it is played HDR-The television itself controls the brightness of each frame based on metadata, and the interference of the TV's software algorithms in this process often leads to artifacts and unnatural images.
Why not put maximum brightness?
Setting 100% brightness in a well-lit room can cause rapid eye fatigue, but it can be difficult to see the lights. HDR-content in the dark is necessary to display specular highlights).> Connecting new generation game consoles such as PlayStation 5 or Xbox Series X requires special attention to settings. 4K at 120 Hz, supported VRR (Variable Refresh Rate, but Xiaomi Mi TV 4S 55 has a 60Hz panel, which means you'll get an image. 4K HDR 60Hz, which still looks great. In the console settings, you need to explicitly state that the connected display supports the device. HDR. Often, automatic detection is not working correctly, especially if the TV is in sleep or source switching mode. On Xbox, for example, you should go the way: Settings → General. → Television and display parameters → Video modes and make sure that the ticks are opposite "Allow" 4K","Allow HDR10" and "Allow Auto" HDR". It's important for PC gamers to check the settings of the video card. NVIDIA or AMD It is necessary to set the depth of color on 10 bit 12 bit, if the cable capacity permits, because 8-The bit signal cannot fully display gradients HDR free of bandages (posterization). 🖥️ Make sure that on Windows 10/11 In the section "Screen settings" the function "Use" is enabled HDR". 🎮 In the game settings, select the "Quality" or "Fidelity" graphics mode, which usually prioritizes resolution and HDR above FPS. 🔌 If a receiver or soundbar is used, they must also support passthrough. HDR, Otherwise, they can "short" the signal to SDR. ⚠️ Note: When connecting a PC through HDMI Make sure that the full range is used RGB (0-255), not limited (16-235), If you don't, black will look gray, and it's worth noting that some games and apps on consoles have their own internal settings. HDR. After inclusion HDR In the system, it is often suggested to calibrate the image with special screens, where you need to combine logos with the background. It is not recommended to neglect this stage, since this sets a white point and a black dot for your room. HDR Popular streaming platforms such as Netflix, Amazon Prime Video and YouTube have their own playback requirements HDR. For Xiaomi Mi. TV 4S 55 Android-powered TV It is important that the application has the necessary certificate or works without restrictions (in the case of third-party builds). In the YouTube app HDR It is automatically activated if the content is marked with an icon"HDR". However, if you use third-party clients such as SmartTubeNext (recommended for removing ads), you need to go to the app settings (Settings). → Video → HDR) and select "Always On" or "Automatic" mode to avoid manual switching. Netflix requires a Premium subscription to access the premium. 4K HDR In addition, the Netflix profile settings (playback settings) must select the High Quality option, and the app itself may display a logo when the video starts"4K" or "Dolby Vision" (which converts), indicating successful activation. 💡For streaming. HDR Internet speed is critical: a stable connection of at least 25 Mbps is recommended to avoid a decrease in picture quality in dynamics. Color rendering problems in apps are often solved by clearing the cache. If the colors look faded or oversaturated, try removing app updates and installing it again through the Google Play Store. This will reset the internal decoder settings that may have gone wrong after updating the TV firmware.Diagnostics of problems and common errors Even with all the instructions, users may encounter problems. The most common of these is a black screen or a message saying, "No format is supported." This almost always indicates that the cable is not in compliance with the requirements of the cable. HDMI 2.0 or that the TV port is not switched to high bandwidth mode. Another common problem is faded colors. If the image looks gray and pale, it's a sign that the TV is receiving SDR-signal, but trying to pull it on HDR-curved. Check the TV's display (usually called by the "Info" button or long press"OK" on the remote: there should be an indicator on"HDR10" or"HLG". 🔄 Try switching the cable to another. HDMI-port, preferably HDMI 2 or 3, as they often take precedence in the board architecture. 🔋 Perform a full power cycle: turn off the TV with a button on the case, pull the cord from the socket for 1 minute, then turn on again. 📡 Check for system updates in the Settings section → On TV. → System updates. If nothing works, there may be a software failure in the image processing module, and in extreme cases, you can reset to factory settings, but this will delete all installed applications and accounts. Before that, you should try to reset only the image settings in the corresponding menu. ⚠️ Warning: Resetting to factory settings will delete all Google account data and installed apps. Use this method only if other diagnostic methods have not helped. FAQ: Frequently Asked Questions Does Xiaomi Mi Support? TV 4S 55 Dolby Vision? No, this model only supports standards. HDR10 and HLG. Dolby Vision is proprietary technology and requires licensing that was not applied in this TV series.Dolby Vision content will be played in mode HDR10. Why on the switch? HDR Does the screen get dimmer? Can this happen if the settings on the image are "Eco mode" or "Light sensor." The TV tries to save energy by reducing the brightness of the backlight. Turn off the energy saving in the settings menu for full operation. HDR. Can I include? HDR through USB-flash-port? Yes, built-in Mi Video media player or third-party apps like VLC And Kodi is capable of decoding. HDR-file (MKV, MP4) s USB-The main thing is that the file contains metadata. HDR10. Does inclusion affect HDR - The TV's lifespan? HDR This means that the maximum brightness of the backlight is expected, which theoretically increases the load on the light. LED-However, modern cooling systems and burnout protection algorithms (especially for static interface elements) minimize this risk. HDR Press the button "Menu" or "Settings" on the remote control as you play the video. The overlay that appears in the corner of the screen should show the logo. HDR, HDR10 or HLG. If there is no logo, the signal is transmitted to SDR.