Modern users often strive to create a single multimedia ecosystem where all devices work synchronously. Connecting a laptop to a TV allows you to display an image on a large screen or broadcast audio files through high-quality Smart TV acoustics. However, many owners of technology mistakenly believe that Bluetooth is a universal solution for transmitting high-definition video.
In fact, Xiaomi Mi TV and other models of the brand support Bluetooth protocols primarily for peripherals and audio systems. The transmission of video streaming over this channel is technically limited by bandwidth, making it impossible to fully screen mirror without the use of third-party codecs or specific use cases.
In this article, we will discuss in detail how to set up a connection between your computer and your TV, what limitations the technology has, and how to bypass the standard limits of an Android TV or PatchWall system.
Bluetooth Technical Limitations for Data Transfer
Before setting up, you need to understand the architecture of wireless interfaces. Bluetooth was designed to replace short cables for peripherals, not for heavy video content. The bandwidth of even the latest versions (5.0, 5.2) is far below the requirements for video broadcast in Full HD or 4K resolution.
Xiaomi TVs use Bluetooth modules mainly to connect gamepads, keyboards, mice and, most importantly for our theme, wireless headphones or sound panels. Trying to transmit an image through this channel will either lead to no signal or extremely low quality images with a huge delay.
But there is a scenario where the connection is justified, where the TV is used as an external audio system, where the laptop is the source of sound and the TV is broadcasting it through its speakers, which is convenient if the laptop's built-in speakers are damaged or not good enough to watch a movie.
⚠️ Note: Do not try to find the screen Translate feature via the Bluetooth menu on Xiaomi TV. This option does not exist in the standard interface, since the protocol does not support real-time video streaming with a sufficient frame rate.
To understand the differences in data rates, consider the comparative technology table:
| Technology | Maximum speed | Typical use | Support for video |
|---|---|---|---|
| Bluetooth 5.0 | up to 2 Mbps | Audio, files, peripherals | No (audio only) |
| Wi-Fi Direct | up to 250 Mbps | Screen broadcast (Miracast) | Yes (HD/4K) |
| HDMI (cable) | up to 48 Gbps | Gaming streaming, 4K content | Yes (maximum quality) |
| DLNA | Depends on the router. | Memory media files | Yes (local files) |
So, the Bluetooth on Xiaomi TVs is designed solely for audio streaming and control, but not video output.This is a critical nuance that saves time for users looking for non-existent features.
Why is video slowing down on Bluetooth?
Preparation of devices for pairing
To get started, you need to make sure that both devices are ready to interact. On the side of the Xiaomi TV, you need to activate visibility mode. To do this, go to the main menu and select Settings, then find Add Accessories or Bluetooth.
On a laptop running Windows 10/11, you also need to have the appropriate module on. Check for drivers and make sure the adapter is not in sleep mode. Often users forget that some laptop models have a physical switch or a function key (such as F2 or F12) to enable wireless interfaces.
☑️ Checking connection readiness
It is important to place devices no more than 5-7 meters apart during initial pairing. Walls and metal objects can cause interference, especially if the protocol version below 4.0 is used. Make sure that the maximum number of devices is not connected to the TV (usually the limit is 2-3 active audio connections).
If you plan to use your laptop as a sound source, check the volume level on both devices beforehand. Sometimes, once connected, the volume levels become desynchronized, and the sound can be quiet even at maximum settings on the computer.
Step-by-step: pairing laptop and TV
You can split the setup process into several logical steps. You first need to start searching for devices on your TV. On the remote, click the menu button, select the gear icon, and go to the Remotes and Accessories (or Bluetooth) section. Select the Add Accessory option.
Now, on your laptop. On Windows, press the Win + I key combination to open the settings. Go to Devices (or Bluetooth and devices in Windows 11) and turn on the Bluetooth switch. The system will automatically search for available gadgets.
The list of devices found should show the name of your TV, such as Mi TV 4A or Android-01. Click on it to start the mating procedure. The TV screen may ask you to confirm pairing with or without the code. Use the remote to confirm the action.
- 📺 On Xiaomi TV, open your Bluetooth settings and start searching.
- 💻 On your laptop, turn on the adapter and find your TV name in the list.
- 🔗 Click "Connect" and confirm the request on the TV screen.
- 🔊 After a successful connection, the status "Connected: music, voice" will appear in the list of devices".
Once paired successfully, the system can automatically switch the output to the TV, if this does not happen, you will need to manually adjust the playback devices, sometimes you need to repeat the procedure 2-3 times if the connection has passed with an authorization error.
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Successful pairing means devices can see each other, but additional customization may be required in Windows to work the sound.
Set up audio output via Bluetooth
The most common Bluetooth scenario between PCs and TVs is audio transmission, and even if the video is broadcast over cable or Wi-Fi, the sound can be output separately to the TV's acoustics, which requires Windows to change the default playback device.
Right-click on the speaker icon in the tray (near the clock) and select Sounds or Open Sound. In the window that opens, find the drop-down list of output devices. It should display your Xiaomi TV. Select it to redirect the entire audio stream of the system.
If you use your browser to watch movies, check the settings inside the player itself. Some websites or apps (e.g. VLC, PotPlayer) have their own audio output settings that can override system settings. Make sure that the player settings also select a Bluetooth Audio device.
⚠️ Note: Bluetooth audio can cause latency relative to the image, which is normal for this protocol, but can be annoying when viewing dynamic scenes.
To improve sound quality, you can experiment with codecs. If your laptop and TV support aptX or LDAC codec, the transmission quality will be higher and the latency is lower. However, by default, devices often use a basic SBC codec, which provides compatibility, but not perfect quality.
Alternative ways of broadcasting images
Since we found that you can't send video over Bluetooth, consider working alternatives. The most effective wireless method is Miracast (in Windows, it's called "projection"), which uses Wi-Fi Direct and allows you to stream images in high quality without the latency that is typical of Bluetooth.
To connect via Miracast on a Xiaomi TV, make sure the wireless display feature is enabled. Often it is active by default. On a laptop, press Win + K. The system will find available displays. Select your Xiaomi TV from the list and the desktop image will appear on the big screen.
Another popular option is to use the built-in Mi Remote app or the Cast feature in Google Chrome. Open the browser menu, select Translate and find your TV, which is ideal for displaying browser tabs or YouTube videos, as it uses streaming data over a local network.
- 📡 Use Miracast (Win)+K) for full screen duplication without wires.
- 🌐 Chrome’s “Translate” feature is convenient for displaying web content.
- 🔌 Cable HDMI It is the best choice for games and 4K-compression-free.
- 📱 Mi Home app allows you to manage content, but does not always support streaming from PC.
If none of the wireless methods work consistently due to ether load, there is always the classic wired option. HDMI cable ensures no compression artifacts and delays, which is critical for gamers.
Solving frequent connection problems and errors
Despite the simplicity of the technology, users can face difficulties. One of the common problems is that the TV is not visible in the list of devices on the laptop. In this case, try rebooting the Bluetooth module on both devices, sometimes it helps to completely turn off the TV from the socket for 10-15 seconds to reset the detection service cache.
Another common situation is that the device is connected, but there is no sound. Check if Windows has selected the default output device again for the built-in speakers. It is also worth checking the volume mixer: sometimes a particular application (such as a browser) can be "muffled" in the system mixer while the system sounds are running.
If the connection is constantly broken, perhaps the problem is interference from the router or other Bluetooth gadgets. Try to move the laptop away from the router or switch Wi-Fi to 5 GHz, freeing up the 2.4 GHz band for Bluetooth, as they work in the same frequency spectrum.
⚠️ Note: Bluetooth drivers on laptops are frequently updated.If problems started after a Windows update, try rolling back the driver or installing the latest version from the laptop manufacturer's website rather than through the update center.
In rare cases, Xiaomi PatchWall TVs may need to clean the list of paired devices. Go to Bluetooth settings, select previously connected gadgets, and click "Forget" or "Delete" and then pair again.
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If the sound is interrupted, try to reduce the load on the Wi-Fi network or get closer to the router, as Bluetooth and Wi-Fi can conflict when the signal is weak.