Modern multimedia systems allow you to transform your living room into a full-fledged cinema, using the capabilities of your personal computer. Image broadcast From a monitor to a large screen, eliminating the need to run long HDMI cables across the room. This is especially useful for those who prefer to watch movies, play games, or give presentations in comfort while maintaining the mobility of their devices.
Wireless data transmission technologies such as Miracast And DLNA, have become the de facto standard in the ecosystem LG webOSHowever, despite its apparent simplicity, the setup process may involve a number of technical nuances depending on the operating system and driver version. Understanding how these protocols work will help you avoid common errors and ensure a stable display.
In this article, we'll take a detailed look at all available connection methods, from built-in Windows features to specialized software. You'll learn how to set up local network for maximum transfer speeds and why the quality of your Wi-Fi router is critical to eliminating lag. Get ready to dive into the world of wireless multimedia.
Technical requirements and equipment preparation
Before you begin setup, you need to make sure your equipment meets the minimum requirements for wireless video streaming. Support for the standard is key. Wi-Fi Direct or Miracast From your computer's adapter. Most modern laptops and desktop PCs released after 2015 already have built-in support for this technology.
Televisions LG Smart TV TVs running webOS 3.0 and higher have a built-in signal reception module. It's important that both devices are on the same subnet. This means both the computer and TV must be connected to the same router. Using guest networks or different frequency bands (2.4 GHz and 5 GHz) with client isolation may result in the devices simply not being able to see each other.
⚠️ Note: If your router is configured to automatically switch clients between 2.4 GHz and 5 GHz frequencies, this may cause connection interruptions during streaming. For stable operation, we recommend forcing both devices to connect to the 5 GHz network if the distance to the router allows.
Check that your wireless adapter drivers are up-to-date. Manufacturers often release updates that improve connection stability and add support for new video compression codecs. Go to Device Manager and ensure that the network adapter is working properly, without any exclamation marks.
Setting up the built-in Connect feature in Windows 10 and 11
Windows 10 and 11 operating systems natively support Miracast technology, making the connection process extremely simple for the user. You won't need to install any additional software if your devices are relatively new. The process is completely transparent and doesn't require extensive networking knowledge.
First, activate the signal reception mode on your TV. LGIn the application menu, find the "Screen Share" app. On some models, it may simply be called "Miracast." Once launched, a "waiting for connection" message will appear on the screen. Now, proceed to your computer settings.
Press the key combination Win + K on the keyboard. The "Connect" panel will open on the right, where the system will begin searching for available wireless displays. If the TV is in standby mode, it should appear in the list within a few seconds. Click on the name of your LG TV.
- 📺 Make sure the Screen Share app is running on your TV.
- 💻 Press Win + K on your computer keyboard to search for devices.
- 🔗 Select your TV from the list of available devices that appears.
- ✅ Accept the connection request on your TV remote if a notification appears.
Once paired successfully, your computer screen will be mirrored. If there is no image or the screen is black, check the projection settings by clicking Win + PHere you can choose the "Duplicate", "Extend" or "Second screen only" mode. extensions allows you to use your TV as a second monitor, moving program windows with your mouse.
☑️ Check before connection
Using the LG TV Plus app and DLNA
An alternative way to transmit content is to use technology DLNA (Digital Living Network Alliance). This method is ideal for playing media files (videos, photos, music), but is not designed for real-time desktop mirroring. For file management and streaming, the company LG developed an official application LG TV Plus, available for mobile devices and PCs.
To use DLNA using standard Windows tools, you don't need any third-party programs. Open File Explorer, find the video file, right-click it, and select "Cast to device." Select your TV from the list. However, the built-in player's functionality may be limited by codec formats.
Application LG TV Plus Offers a more flexible interface. It allows you to not only stream photos and videos from your computer to the screen, but also use your smartphone or PC as a remote control. This is convenient when the standard keyboard doesn't reach the TV and you're too lazy to find the original remote.
| Parameter | Miracast (Broadcast) | DLNA (Media) | LG TV Plus |
|---|---|---|---|
| Content type | Full screen in real time | Files (video, photo) | Files and Management |
| Delay | Minimum (depending on Wi-Fi) | Absent | Absent |
| Sound | Broadcast on TV | Broadcast on TV | Broadcast on TV |
| Using a PC | It is possible to work in parallel | You can turn off the PC | Active software required |
It's worth noting that when using DLNA, the computer acts as a server. This means it must be turned on and not sleep during playback. Configure your power plan so that hard drives and Wi-Fi adapters are not turned off to save power.
Why doesn't DLNA show some video formats?
Built-in TV players often don't support modern compression codecs like HEVC (H.265) or DTS audio tracks. In such cases, the TV simply won't recognize the file or will display a format error. The solution is to use screen sharing (Miracast), which uses the computer's powerful processor to handle the decoding and sends a pre-processed video stream to the TV.
Third-party programs for advanced broadcasting
Windows standard tools and functions Smart TV don't always provide ideal performance, especially when gaming or viewing heavy 4K content. In such cases, specialized utilities that optimize data flow and reduce input lag come to the rescue.
One of the most popular programs is Let'sView or AirParrotThey offer a more stable connection and additional features, such as screen recording or drawing on the display. Installing such software requires a client on both the PC and, in some cases, the TV (via the LG Content Store).
Another powerful tool is PlexIt's a media server that organizes your movie and TV show library into a beautiful interface with posters and descriptions. Plex is installed on your computer as a server and on your TV. LG The client application is downloaded. This is the best way to create a home theater with a collection of files.
⚠️ Please note: Free versions of streaming software often have session time or image quality limitations. Furthermore, installing unknown software from untrusted sources can pose security risks to your local network.
When choosing a third-party solution, pay attention to the processor load. Some programs use software video encoding, which can cause lag on low-end computers. Hardware acceleration via a video card is preferable, but requires proper configuration.
Solving lag and image quality issues
Wireless video transmission is extremely sensitive to the quality of the radio channel. If you notice artifacts, a squared-off image, or audio desync, the problem lies in airwave congestion or a weak signal. The first step is to check the Wi-Fi signal strength on both devices.
A common cause of problems is using the 2.4 GHz band, which is heavily polluted by neighboring routers, microwaves, and Bluetooth devices. Switching to 5 GHz It provides cleaner air and the high throughput needed for Full HD and 4K streams. However, 5 GHz has a shorter range and is less effective at penetrating walls.
If reconfiguring the network is not possible, try lowering the resolution of the displayed image. In Windows display settings (Settings → System → Display) Reduce the resolution to 1280x720. This will reduce the load on the network and may eliminate stuttering. Disabling hardware acceleration in the browser also helps if the problem only occurs when watching online videos.
- 📶 Move closer to the router or use a Wi-Fi repeater to strengthen the signal.
- ⚙️ Update the firmware of your router and LG TV through the settings menu.
- 🔄 Restart your router to clear accumulated cache errors.
- 🚫 Disable the VPN on your computer as it may block local device discovery.
It's important to understand that a wireless connection may not be suitable for fast-paced shooters or competitive games due to the inherent latency. In such cases, it's better to use an HDMI cable and reserve wireless technology for movies, photos, and presentations.
Frequently Asked Questions (FAQ)
Is it possible to screen mirror if my TV and router only support 2.4 GHz?
Yes, you can. Miracast technology also works on the 2.4 GHz frequency. However, image quality may be lower (maximum 720p or unstable 1080p), and latency may be higher. This is fine for viewing photos or static presentations, but high-resolution videos may experience choppiness.
Why doesn't my computer see my LG TV in the list of devices?
Most likely, the devices are connected to different networks (for example, one to a guest network and the other to the main network) or the access point isolation feature is enabled on the router. Also, make sure the Screen Share app is running on the TV and is waiting for a connection.
Is sound transmitted to the TV when mirroring the screen?
Yes, the sound should switch to the TV by default. If there's no sound, check the playback settings in Windows: click the speaker icon in the system tray and select your TV from the list of output devices (usually listed as the TV model or LG webOS model).
Does screencasting affect internet speed?
Technically, Miracast (screen mirroring) doesn't use the internet, as the connection is direct between devices over the local network. However, the Wi-Fi channel is busy transmitting the video stream, so internet speeds on other devices on the network may decrease due to competition for airtime.