Modern multimedia content Requires large screens for full viewing, and files are often stored on a PC or laptop's hard drive rather than in the cloud. Streaming video from a computer to a TV LG Smart TV Wi-Fi solves this problem without unnecessary wires, turning the living room into a personal cinema. Wireless connectivity provides freedom of movement and a beautiful appearance, eliminating the need to run HDMI cables across the room.
Wireless data transmission technologies in the ecosystem LG implemented through several standards, each of which has its own characteristics. Miracast Allows full screen mirroring, DLNA works with media libraries, and proprietary apps expand functionality. The choice of a specific method depends on your computer's operating system, TV firmware version, and local network quality.
In this article, we'll take a detailed look at all available image output methods, troubleshoot common connection errors, and set up stable high-definition data transmission. You don't need to be an engineer to establish a connection between devices; simply follow the step-by-step instructions and understand the basic principles of home theater operation. local network.
⚠️ Important: Make sure your router supports the 5 GHz standard to transmit high-resolution video without lag. Older routers may not be able to handle 4K streaming.
Requirements for equipment and network configuration
Before you begin syncing your devices, you need to make sure the basic settings are correct. Computer and TV LG must be connected to the same wireless network. If you're using a guest network or the 2.4 GHz band for one device and the 5 GHz band for another, automatic detection may not work due to client isolation at the router level.
Power Wi-Fi signal Plays a critical role in the stability of the video stream. To view video in Full HD or 4K resolution, it is recommended that the signal level on both devices be at least -65 dBm. A weak signal will result in artifacts, buffering, or a complete connection loss at the most inopportune moment.
The computer's operating system also imposes its own limitations. Windows 10 and 11 have built-in wireless projection tools, while macOS requires third-party software or AirPlay 2 support, which is available on some models. LG 2019 and newer. Check that your PC's wireless adapter drivers are up-to-date.
☑️ Checking connection readiness
Some antivirus programs and firewalls may block incoming connections to detect devices. If your computer can't detect your TV, temporarily disable the protection or add an exception for the service. Media StreamingThis is a common problem in corporate or highly configured home networks.
Using Screen Share (Miracast) on Windows
The fastest way to display an image is to use the built-in Miracast technology, which is known as "Projection" in Windows. TVs LG Support this protocol natively, so no additional software installation is required. This method is ideal for presentations, photo viewing, or sharing browser content.
To get started, press the key combination Win + K on your computer's keyboard. A "Connection" panel will appear on the right side of the screen, where the system will begin searching for available displays. Make sure the app is running on your TV. Screen Share (or "Broadcast" in newer versions of webOS).
- 📺 Press the "Input" button on the remote and select "Screen Share" or find the corresponding application in the LG menu.
- 💻 On your PC, select your TV LG from the list of available devices.
- 🔒 A connection request may appear on the TV screen - confirm it using the remote control.
Once paired successfully, the image from your computer monitor will appear on the large screen. You can change the operating mode via the menu. Projection: Duplicate your screen, extend your desktop, or display only on the second screen. Extend mode is useful if you want to work on your PC while watching a movie on your TV.
What to do if the PC does not see the TV?
Make sure the Screen Share app is running on your TV, not just HDMI mode. Also, check that your device isn't hidden in Windows' visibility settings.
Streaming via the LG TV Plus app
Official app LG TV Plus (formerly known as LG SmartView) offers advanced control and streaming capabilities. It not only allows you to mirror your screen, but also use your smartphone or tablet as a remote control, as well as stream media files from your computer if you have the appropriate desktop version installed or use an emulator.
The main advantage of this method is support for a more stable codec and playback controls. You can pause, rewind, or adjust the volume directly from the keyboard. The app automatically converts formats that your TV doesn't support out of the box.
The connection process begins with device registration. Launch the app on your computer, and it will scan the network. Device name should match what's displayed in your TV settings. If you're using Windows, make sure "Windows Media Components" is enabled in the system features.
In the program interface, select the "Media" tab and select the folder where your video is stored. The app will sort files by type and allow you to create a playlist. This is especially convenient for watching TV series, where you want to automatically skip to the next episode.
Streaming media via DLNA and Windows Media Player
Protocol DLNA (Digital Living Network Alliance) is a standard for sharing multimedia content over a home network. Unlike Miracast, it doesn't mirror the screen, but rather transmits the media file itself, which is then decoded by the TV. This reduces the load on the computer's processor and saves battery life.
In Windows, the feature is built into "Streaming Media Settings." To activate it, open Control Panel → Network and Internet → Network and Sharing CenterSelect "Streaming Media Settings" and enable this option. Find your device in the list of devices. LG Smart TV and set the status to "Allowed".
Now you can send any video file on your computer to your TV with a simple right-click. Select "Cast to device" from the context menu and select your TV. The video will open in the standard Windows player, controlled by your TV remote.
| Protocol | Image quality | Delay | PC battery consumption |
|---|---|---|---|
| Miracast | High (depending on signal) | Low | High |
| DLNA | Original (lossless) | Absent | Short |
| Chromecast | High | Average | Average |
DLNA's main limitation is format support. If your video file is encoded in a rare codec, the TV may display an "Unsupported format" error. In this case, you'll need to use software media servers, such as Plex or Kodi, which broadcast content with on-the-fly recoding.
Broadcasting from the Google Chrome browser
Browser Google Chrome has a built-in casting function that works via the Chromecast protocol. Many modern TVs LG have built-in Chromecast support, or you can use an external set-top box. This method is ideal for watching online video from sites that don't have their own TV app.
Open your computer's browser and click the three dots in the upper right corner. Select "Cast..." The browser will prompt you to select a source: a tab, the entire screen, or a file. Once you select a source, your TV will appear in the list.
If your TV does not appear in the list, check if the feature is enabled. Google Cast In the TV settings. On some LG models, it can be activated separately in the "Connections" or "Advanced Settings" section. Also, make sure your antivirus software isn't blocking your browser's local connections.
The advantage of this method is its versatility: you can stream video from any website, even if it's DRM-protected (for example, Netflix or YouTube), and the quality will automatically adapt to your internet speed. However, playback controls (pause, rewind) are often only available from a computer, not a remote control.
Solving problems with lag and image quality
The most common problem with wireless streaming is audio and video desynchronization or choppy video. This is usually due to Wi-Fi congestion. If you have a lot of neighboring routers on your network, they may be causing interference. Try changing the broadcast channel in your router settings to a less congested one (e.g., 1, 6, or 11 for 2.4 GHz).
Your computer's screen resolution may not match your TV's native resolution, resulting in stretching or black borders around the edges. Go to Screen parameters in Windows and select the recommended resolution (usually 1920x1080 or 3840x2160). Also check the aspect ratio settings on your TV (the "Aspect Ratio" button on the remote).
- 📉 Reduce quality: In Windows broadcast settings, you can reduce the image quality to improve smoothness.
- 🔄 Reboot: A complete reboot of the router and TV (by unplugging it from the power outlet for 10 seconds) solves 80% of problems.
- 🔌 Cable connection: For initial setup or software updates, it is better to use a direct connection.
If there's no sound, check your default playback device. Click the speaker icon in the Windows tray and select your TV. LG as an audio output device. Sometimes the system defaults to using the laptop's speakers.
⚠️ Note: The webOS interface and menu item names may vary depending on the firmware version of your LG TV. Up-to-date instructions are always available in the "Help" section on your TV.
Frequently Asked Questions (FAQ)
Why doesn't my LG TV see my computer in the list of devices?
The most common issue is that the devices are connected to different networks (for example, one to a guest network and the other to the main network) or that one device is using the 5 GHz band and the other is using 2.4 GHz, with client isolation enabled. Also, check if network discovery is enabled in Windows.
Is it possible to stream video from a Mac to an LG TV without an Apple TV box?
Yes, if your LG TV supports AirPlay 2 (2019 models and newer). Otherwise, use third-party AirPlay receiver apps for webOS or stream via the Chrome browser if your TV supports Chromecast.
How to reduce latency when playing games on TV via Wi-Fi?
Wireless streaming always introduces latency. For gaming, it's best to use an HDMI cable. If this isn't possible, use a router with Wi-Fi 6 support, place your PC closer to the router, and disconnect other devices from the network to free up bandwidth.
There's only a picture, but no sound. What's wrong?
Most likely, the audio output isn't switched in Windows. Click the speaker icon in the lower-right corner of the screen, click the name of the current playback device, and select your LG TV from the list.