How to stream images from your computer to your TV via Wi-Fi

Modern multimedia capabilities make it easy to transform your living room into a home theater, eliminating unnecessary cables. Sharing video content, photos, or your desktop from your personal computer to a big-screen TV is now a matter of clicks. No complex equipment is required; all you need is a stable wireless network and compatible devices.

The basis for streaming is a local network, which must include both the laptop and Smart TV. There are several standard protocols, such as Miracast, DLNA, or AirPlay, each with its own features and applications. The choice of a specific method depends on your computer's operating system and TV brand.

In this article, we'll take a detailed look at all the current connection methods, troubleshoot common errors, and help you set up a high-quality picture. You'll learn how to set up wireless display in Windows, use Apple features and stream media through media servers.

Wireless video streaming technologies: Miracast, DLNA, and AirPlay

Before you begin setting things up, it's important to understand the differences between the main protocols, as they serve different purposes. Miracast Allows you to fully mirror your computer screen, meaning everything that's happening on your PC monitor, including the mouse cursor and open windows, will be visible on your TV. This technology is built into most modern Samsung, LG, Philips, and Sony TVs, and is also supported by Windows 10 and 11.

Unlike screen mirroring, the technology DLNA (Digital Living Network Alliance) is designed for streaming specific files. You won't see a desktop, but you can launch a video file or photo slideshow, and the TV will play it using its own decoder. This reduces the load on the computer's processor and often ensures smoother playback of heavy content.

Apple devices use a proprietary protocol. AirPlay, which ensures the highest transmission quality and minimal latency. While there are third-party applications that emulate this protocol for Windows PCs, it only works natively in the macOS ecosystem. Understanding these differences will help you choose the best method for your situation.

⚠️ Note: Protocols may be referred to differently in your TV menu. For example, Samsung uses "Screen Mirroring," LG uses "Smart Share," and Sony uses "Screen Mirroring."

It's important to note that for Miracast to work, your graphics card and Wi-Fi adapter must support Wi-Fi Direct technology. If your laptop is more than 10 years old, the feature may not be supported by the hardware, even if the operating system supports it.

Preparing equipment and network for synchronization

The success of the connection directly depends on the configuration of your home network. The most important rule: the computer and TV must be connected to the same routerIf you have a dual-band router broadcasting 2.4 GHz and 5 GHz networks, it's best to have both devices in the same frequency band, although modern routers can often route traffic between bands.

Check that network discovery is enabled on your TV. Smart TV settings often include an option to allow external devices to connect. Without this option enabled, your computer simply won't see the display in the list of available devices.

It's also worth making sure that "Guest Network" mode or AP client isolation aren't enabled on your computer if you're using a corporate or complex home network. These settings prevent devices from seeing each other on the local network.

Setting up screen mirroring in Windows 10 and 11

Microsoft operating systems have built-in support for wireless displays, making the process extremely simple. You don't need to install any third-party software if your TV supports the Miracast standard. First, make sure the "Screen Mirroring" app or a similar one is running on your TV and waiting for a connection.

On your computer keyboard, press the key combination Win + KThe "Connect" panel will open on the right, where it will search for available devices. When your TV's name appears in the list, click it. If a connection request appears on the TV screen, confirm it with the remote.

After successful pairing, you can control the operating mode through the menu ProjectThe following options are available:

• 🖥️ Computer screen only — the image remains on the monitor, the TV goes out.
• 🔄 Recurring — the picture from the PC is completely copied to the TV.
• 📺 Expand — the TV becomes a second monitor, you can drag windows onto it.
• 📺 Second screen only — the PC monitor goes dark, the image is only on the TV.

⚠️ Note: When using Extend mode, the mouse cursor may move unintuitively if the physical arrangement of your monitors does not match your system settings. Adjust the display order in Settings → System → Display.

If the system reports "Wireless display is not supported on this PC," check for Wi-Fi adapter drivers. Updating your graphics card drivers can sometimes help, as video encoding is often handled by the graphics processor.

What should I do if the search doesn't find the TV?

Make sure Client Isolation isn't enabled on your router. Try temporarily disabling your antivirus or Windows Firewall. In rare cases, restarting the Wi-Fi Direct Helper service in the Windows Services Manager (services.msc) may help.

Using built-in Smart TV apps

TV manufacturers often develop their own utilities to simplify connection. For example, Samsung offers the "Smart View" app, which can be installed on a PC from the Microsoft Store. It not only allows you to mirror your screen but also easily stream photos and videos from your gallery.

For LG TVs, you can use the LG TV Plus app or Smart Share. In the LG TV menu, go to the "Connection Menu" section and select "Connect to a mobile device." Your computer will find the TV available for projection.

Sony Bravia users can use the "Screen mirroring" feature in their TV's network settings. In Windows 10/11, this device will be detected as a wireless monitor. If automatic connection fails, you can try entering the PIN displayed on the TV screen into the appropriate field on your computer.

Using native apps often provides better connection stability, as they're optimized for the specific TV hardware. However, they may require account registration or profile creation.

Broadcast via Google Chrome browser and Chromecast

If your TV runs Android TV or has built-in Chromecast support, the easiest way is to use the Google Chrome browser. This method is universal and works on Windows, macOS, and Linux.

Open the Chrome browser on your computer. Click the three dots in the upper-right corner of the menu and select "Save and Share" (or just the three dots), then "Cast..." A list of available devices will appear in the window that opens.

By default, the browser offers to broadcast the current tab. However, by clicking the "Sources" button, you can choose:

• 🌐 Broadcast tab — shows the contents of one browser tab.
• 💻 Broadcast your screen - duplicates the entire computer desktop with sound.
• 📁 Stream file - allows you to select a video file on your hard drive for playback on TV.

This method is convenient because it doesn't require network configuration in Windows, but it can result in slightly higher mouse cursor latency compared to native Miracast. For watching videos, this is ideal, as the image quality is often higher.

⚠️ Note: When streaming a tab with audio, the sound may be delayed. For movies and YouTube, it's best to use the built-in "Stream" button directly in the video player interface on the website.

Organizing a media library via a DLNA server

If your goal isn't to share your desktop, but to watch movies stored on your computer, DLNA technology is the most effective. It allows the TV to view your computer's folders as network drives.

Windows 10 and 11 have a built-in media server, but it's hidden. To enable it, go to Settings → Apps → Media Playback. Or search for "Media Streaming Settings." In the window that opens, click "Turn on Media Streaming."

Then you need to share the folder with movies:

1. Right-click on the video folder.
2. Select "Show advanced options" (if you have Windows 11) → "Give access to" → "Individual people" or "Advanced settings".
3. In the folder properties, on the "Sharing" tab, click "Sharing" and add the user "Everyone" with read permissions.

After this, your computer will appear in the TV's Input menu or the Media Player app. Once you open it, you'll see your shared folders. The TV decodes the video itself, so the load on your PC will be minimal.

Solving lag and image quality issues

A common wireless connection issue is audio and video desynchronization or image stuttering. This is usually due to Wi-Fi congestion or a weak signal. If your router is located far away, try moving it closer to the viewing area or using a Wi-Fi repeater.

It's also worth checking whether other devices on the network are using the same bandwidth for downloading large amounts of data (torrents, game downloads). High-definition video streaming requires a stable speed of at least 20-30 Mbps.

If you're using a laptop, make sure it's not in power-saving mode. In Windows power settings, select the "High Performance" plan. This will prevent the Wi-Fi module from reducing power to save energy.

Why is the picture on my TV cut off at the edges?

This is a scaling issue. On your TV remote, find the "P.Size" or "Aspect Ratio" button, or go to the picture settings. Change the mode to "Just Scan," "Original," or "Fit to Screen." On your computer, you can also reduce scaling to 100% in the display settings.

Is it possible to transmit sound to external speakers through a TV?

Yes, if you use Miracast, the audio is transmitted along with the video. In Windows, when the connection is established, a new playback device will appear in the system tray (near the clock). Select it to output audio through your TV speakers or a connected audio system.

How to disable the connection?

The easiest way is to press a combination Win + K and select "Disconnect." Alternatively, you can simply turn off the TV or disable Wi-Fi on your computer. The connection doesn't require a complicated disconnection procedure.

Does my computer support Miracast?

Open command prompt (cmd) and enter the command:

netsh wlan show driver

Look for the line "Hosted network supported." If it says "Yes," then it's likely supported. You can check more precisely using the Connections app (Win+K)—if the panel opens, then it's supported.