Modern leisure is hard to imagine without multimedia entertainment, and there's often a need to stream PC content to a larger display. Wired connections like HDMI provide stability, but are inconvenient due to limited cable length and the need to run wires across the room. Wireless technologies have advanced to the point where they allow for high-quality video streaming without lag, turning the living room into a true cinema.
There are several basic ways to connect a computer to a TV via Wi-Fi from a computer, each with its own features and usage scenarios. The method you choose depends on your device's operating system, TV model, and your intended use: whether it's watching movies, giving presentations, or playing games. In this article, we'll cover all the current methods in detail, from built-in Windows features to third-party apps.
Before you begin setup, make sure both devices are on the same local network. This fundamental requirement For most data transfer protocols. If the router broadcasts on both 2.4 GHz and 5 GHz frequencies, it's advisable for both devices to be connected to the same frequency to ensure maximum data packet exchange speed.
Wireless image transmission technologies
Understanding the operating principles of various protocols will help you choose the most suitable option for your situation. Currently, three main standards predominate, each tailored to specific needs. Miracast Allows you to mirror your screen in real time, creating a direct connection between devices.
Technology DLNA (Digital Living Network Alliance) is primarily focused on transmitting media content: photos, music, and video files. Unlike mirroring, the TV acts as a renderer, decoding the stream sent by the computer's media server. This reduces the load on the PC's processor, as it doesn't re-encode the video stream, but only transmits the files.
The third popular method is using a protocol Google Cast or built-in browser functions Google ChromeThis method is universal and works on virtually any Smart TV with a browser or corresponding app installed. It's especially convenient for displaying the contents of browser tabs or streaming services.
⚠️ Note: When using Miracast, image quality and smoothness depend on the Wi-Fi module's power and the airwaves' congestion. This method may not be suitable for high-motion games due to input lag.
Preparing equipment and network
Before you begin software configuration, you need to ensure your physical infrastructure is ready. Your router must support Wi-Fi standards no lower than 802.11n, and for transmitting 4K content, the presence of a module is highly recommended 802.11ac or axOlder routers may simply not be able to handle high-bitrate streams.
Check that your computer's wireless adapter drivers are up-to-date. Users often skip this step, relying on the standard Windows drivers, which may not support some projection features. Go to device Manager and make sure the network adapter is working properly.
It's also worth paying attention to the placement of the devices. If there are several load-bearing walls or metal structures between the router and the TV, the signal may weaken. In such cases, use Wi-Fi repeater or switching to a wired connection of the TV via a LAN cable can significantly improve the stability of the connection.
☑️ Network readiness check
Using Projection in Windows 10 and 11
The easiest way to connect to your TV via Wi-Fi from your computer is built right into the Microsoft operating system. The "Project" feature is based on Miracast technology and doesn't require any additional software if your TV supports Wi-Fi Direct.
To get started, press the key combination Win + K on the keyboard. The "Connection" panel will open on the right, where the system will begin searching for available wireless displays. If the TV is in connection standby mode (often you need to select a signal source) Screen Share or Miracast in the TV menu), it will appear in the list.
After selecting a device, a connection confirmation prompt may appear on the TV screen, which you'll need to confirm with the remote control. Windows will offer several operating modes:
- 🖥️ Recurring: the image from the PC monitor is duplicated on the TV.
- 🔲 Expand: The TV becomes a second monitor, allowing you to drag windows around.
- 📺 Second screen only: the image on the computer monitor goes out and is displayed only on the TV.
⚠️ Note: The menu interface may vary depending on the TV manufacturer. On Samsung devices, the feature may be called "Screen Casting," while on LG devices, it may be called "Screen Share." Make sure this feature is enabled in your TV's network settings.
It is important to note that for this feature to work, the video card and Wi-Fi adapter must support the technology. Wi-Fi DirectIf nothing is found when searching for devices, check the adapter properties in Device Manager and ensure that virtual access point support is enabled in the driver properties.
Setting up a DLNA media server to view files
If your goal isn't to mirror your desktop, but to view movies or photo galleries stored on your hard drive, DLNA technology is the optimal choice. It allows your TV to view your computer's folders as network resources. In Windows, this feature is available through "Streaming Media Settings."
To activate the transfer, go to Control Panel → Network and Internet → Network and Sharing Center → Streaming media settingsHere, you need to enable streaming and select the devices allowed to access the content. After that, a streaming icon will appear next to the folders in File Explorer.
On your TV, you need to open the app responsible for viewing media from external devices. It may be called Media player, Smart Share, AllShare or simply "Sources." You'll see your computer's name in the list of available devices.
| Parameter | Description | Recommendation |
|---|---|---|
| Video format | Container and codecs | MP4, MKV (H.264/H.265) |
| Audio track | Sound type | AC3, AAC, PCM |
| Subtitles | Text format | SRT (external ones may not be readable) |
| Net | Channel speed | Minimum 50 Mbps for 4K |
The main advantage of DLNA is that the TV decodes the video itself, using its internal processing power. This frees up computer resources, allowing you to focus on other tasks or even turn off the monitor. However, rewinding and file selection are controlled by the TV remote, which isn't always convenient.
Why can't the TV see the files?
Often, the problem lies in the file format. Smart TVs' built-in players support a limited set of codecs. If the file doesn't play, try installing a third-party player on your TV, such as VLC or MX Player, which have their own codecs and aren't affected by system limitations.
Broadcasting via Google Chrome browser
Browser Google Chrome has a built-in Cast feature that lets you cast the contents of a tab or the entire desktop to devices with Chromecast support or built-in Google Cast. This method is versatile and often works where standard Windows projection fails.
Open your browser and click on the three dots in the upper right corner, then select Broadcast... (Cast). In the menu that opens, you'll see a list of available devices. By clicking the arrow next to the "Sources" button, you can choose what to cast: a tab, the entire screen, or a specific file.
This method is especially effective for watching online video from websites that block live streaming via system means. The browser acts as an intermediary, capturing the video stream and sending it to the TV. Image quality remains high, and latency is minimal.
Keep in mind that streaming an entire tab can consume a significant amount of RAM. If your system starts to slow down, close unnecessary applications. This method also requires a stable internet connection, as traffic may go through Google servers, although a direct connection is often established when on the same network.
⚠️ Please note: When streaming DRM-protected content (such as Netflix or Disney+ in high definition) in a browser tab, the quality may be reduced to HD due to copyright restrictions. For 4K viewing, it's best to use native apps on your TV.
Third-party programs for management and broadcasting
When built-in tools aren't enough or advanced functionality is required, third-party software comes to the rescue. Programs like HomeCast, AirServer or LetsView offer more flexible settings. They can emulate AirPlay reception on a PC or, conversely, send a signal to a TV using advanced codecs.
One of the popular utilities is MediaHuman or a built-in server in the player VLCVLC allows you to launch a DLNA server in a couple of clicks: just go to Tools → Settings → Interface and check the "Use media server" box. After this, all files opened in the player will be available on the TV.
macOS users who want to connect to a Windows PC or Android TV often need to install AirPlay receivers, as Apple uses its own proprietary protocol. In this case, a receiver app is installed on the TV, and the computer mirrors the screen as if it were an Apple TV.
- 🚀 Performance: Third-party software is often better optimized for specific tasks than general-purpose system solutions.
- ⚙️ Settings: the ability to manually set the bitrate, buffering and compression format.
- 📱 Cross-platform: the ability to link devices from different ecosystems (iOS and Android, Windows and Linux).
Troubleshooting and diagnostics
Despite technological advances, users often encounter connection issues. The most common is "Device not found." This almost always means that the computer and TV are on different subnets. Check if the "Guest Network" feature is enabled on the router for one of the devices, as this isolates clients from each other.
Another common issue is audio and video desynchronization or constant image flickering. This indicates insufficient bandwidth. Try disconnecting other devices from the Wi-Fi that are actively consuming data (torrents, downloads). Switching to a less congested Wi-Fi channel in the router settings may also help.
If you see a picture but no sound, check your playback devices in Windows. Click the speaker icon in the system tray and select your TV as the default output device. Sometimes HDMI audio drivers aren't installed automatically along with the graphics card drivers.
Why can't the TV see the computer via Wi-Fi?
Most often, the problem lies with your antivirus or Windows Firewall, which is blocking network discovery. Try temporarily disabling protection or adding the current network to the trusted list (a private network). Also, make sure the SSDP Discovery service is running in Windows.
Is it possible to play games over a wireless connection?
For quiet strategy or card games, yes. For fast-paced shooters or racing games, input lag of 50-100 ms will make gaming uncomfortable. In such cases, it's better to use an HDMI cable or technologies like NVIDIA GameStream, which are optimized for low latency.
How to improve picture quality during broadcasting?
Use a router that supports 5 GHz, place devices closer to the access point, and ensure that the TV output resolution matches its native resolution (e.g., 1920x1080 or 3840x2160) to avoid unnecessary scaling.
In conclusion, wirelessly connecting your computer to your TV opens up a wide range of multimedia options. Choosing the right method—whether it's Miracast for presentations, DLNA for movies, or Chrome Cast for web content—will allow you to enjoy digital entertainment with maximum convenience. Experiment with the settings to find the perfect balance between quality and performance for your specific hardware setup.