Modern Smart TVs have computing power comparable to mid-range laptops, which allows them to be used not only for watching broadcast television, but also as a full-fledged large monitorWireless Wi-Fi connection eliminates the need to run long HDMI cables across the room, preserving the aesthetics of the interior. This solution is ideal for presentations, watching movies from a PC hard drive, or even working with documents on a large screen.
However, despite its convenience, the technology has its own nuances associated with signal delay and video stream compression quality. Unlike a wired connection, a wireless connection requires a stable router and properly configured network protocols. In this article, we'll examine all available image streaming methods, compare their effectiveness, and help you choose the best option for your operating system and TV model.
There are several main standards for transmitting multimedia, each of which has its own advantages. Miracast protocol provides full screen mirroring with minimal latency, while DLNA only allows you to stream media content. Understanding the differences between these technologies will help you avoid frustration when trying to run demanding games or fast-paced videos over the network.
Wireless image transmission technologies: Miracast, DLNA and AirPlay
Before you begin setting things up, it's important to understand the terminology, as manufacturers often use different names for the same functions. Miracast — is a standard developed by the Wi-Fi Alliance that enables the transmission of video and sound in real time, creating a direct connection between devices. This technology is often referred to as Screen Mirroring, Smart View or Wireless monitor in the TV menu.
Unlike him, DLNA (Digital Living Network Alliance) works differently: it doesn't broadcast the entire screen, but rather streams files (videos, photos, music) from your computer to your TV. The computer acts as a server, and the TV acts as a renderer. This means you can't open a browser on your PC and see its content on the big screen using DLNA alone, but you can easily play a movie from a folder.
For ecosystem users Apple the main standard is AirPlay 2This protocol provides high-quality transmission and low latency, but requires appropriate support on the TV (often found in recent Samsung, LG, and Sony models) or the use of an Apple TV set-top box. Windows 10 and 11 also support AirPlay through third-party utilities, although native support is limited.
Preparing the network infrastructure for stable operation
Wireless image quality directly depends on your local network bandwidth. To transmit video in the following resolution: 1920×1080 with frequency 60 Hz A stable channel is required. If your router only operates within the range 2.4 GHz, you may experience artifacts, stuttering, and audio desynchronization. It is recommended to use dual-band routers with support 5 GHz.
⚠️ Note: If your computer and TV are connected to different frequency bands (one to 2.4 GHz, the other to 5 GHz) or to different guest networks, device discovery may not be possible. Make sure both devices are on the same subnet.
It's also important to consider the distance between the devices and the router. Walls, especially load-bearing ones, significantly weaken the signal. For best results, both devices should be within line-of-sight of the router or have a strong signal. Ideally, if the router allows it, you should dedicate a separate channel for multimedia traffic to ensure background downloads on other devices don't interrupt the streaming experience.
Check your Windows firewall settings. Often, the operating system's built-in firewall blocks incoming connections, considering them potentially dangerous. Make sure your current network is marked as Private, and not Public, as in the public profile, many discovery services are disabled by default.
Setting up a connection in Windows 10 and 11 via Miracast
Windows operating systems have built-in support for wireless displays, making the connection process extremely simple. You won't need to install any additional software if your devices meet the requirements. First, make sure your TV is receiving a signal. The remote control often has a dedicated button or an option in the app menu, which may be called Screen Share, Wireless Display or Projector.
On your computer, press the key combination Win + KThe "Connection" panel will open on the right. The system will begin searching for available wireless displays within range. When your TV's name appears in the list, click it. A connection confirmation prompt may appear on the TV screen; confirm this with your remote.
Once paired, you'll be able to select a mode. Windows offers three options: screen mirroring (copy), extended (second desktop), and using only the second screen (the primary monitor goes dark). Extended mode is most convenient for working with documents, while duplicate mode is best for viewing photos.
☑️ Check before connection
If the connection is successful but the image appears blurry, check your resolution settings. Go to Settings → System → Display and select the wireless monitor. Set the recommended resolution, which is usually 1920×1080 or 3840×2160 For 4K TVs. You can also adjust the screen orientation and text scaling if the fonts become too small.
Using DLNA to stream media files
If your goal isn't to control your computer, but rather to watch movies or listen to music stored on your hard drive, then DLNA is a more energy-efficient solution. In Windows, this feature is called "Streaming Media." To activate it, open Control Panel and go to Network and Internet and select "Streaming media".
In the window that opens, click "Enable media streaming." The system will display a list of devices on the network. Find your TV and ensure that the "Allowed" box is checked next to it. After this, the contents of your default folders (Videos, Music, Pictures) will be available to the TV via the built-in media player.
For more flexible management, it is recommended to use third-party servers such as Plex or JellyfinThey not only stream the file, but can also transcode video on the fly if the TV doesn't support the container format, and automatically download movie covers and descriptions, creating a beautiful media library.
| Parameter | Miracast (Broadcast) | DLNA (Media) |
|---|---|---|
| Transmission type | Full screen in real time | Files only (videos, photos) |
| Delay | Yes (depending on network) | Minimum at start |
| Control | Full PC control | Play/Pause only |
| Background | The PC screen is active | You can minimize windows |
Why doesn't DLNA show some video formats?
The DLNA standard transmits files as is. If your TV can't decode the MKV format with the HEVC codec, it simply won't open the file. Servers like Plex solve this problem by encodering the video on the fly.
Solving latency and image quality issues
One of the main complaints users have when using a TV as a monitor is input lag—the delay between mouse actions and on-screen response. This is critical for fast-paced games, but less noticeable when working with text. To minimize this effect, switch your TV to the "Input Lag" mode. Game Mode (Game mode) via image settings. This disables unnecessary image post-processing.
A common issue is audio and video desynchronization. The audio may lag behind the actors' lips or the on-screen action. In Windows settings, right-click the speaker icon and select "Sounds" or "Sound Settings." Find your wireless display, open its properties, and try changing the audio format or disabling any additional effects that may buffer the stream.
⚠️ Note: Smart TV interfaces (Tizen, webOS, Android TV) are regularly updated by manufacturers. The layout of menu items may change. If you don't find the feature you're looking for, check the official documentation for your specific model on the manufacturer's website.
If the image is frequently choppy or the quality is degraded, try lowering the output resolution. Switching from 4K on 1080p This can dramatically improve image smoothness on unstable networks. It's also worth closing background programs on your PC that consume bandwidth, such as torrents or cloud syncing apps.
Alternative solutions and third-party software
Built-in Windows and Smart TV tools don't always work perfectly, especially if the devices are from different manufacturers. In such cases, specialized programs come to the rescue. One of the market leaders is LetsView or ApowerMirrorThey require client installation on both the PC and the TV (if the platform allows it, such as Android TV), but provide a more stable connection.
For video card users Nvidia There is a feature called Nvidia GameStream (though it is being phased out in favor of Nvidia Cloud) that allows you to stream games to devices that support it. Shield TVThis provides the best picture quality and minimal latency, virtually indistinguishable from a wired connection, but requires compatible equipment.
Another option is to use browser-based solutions. Some modern TVs have built-in browsers that can be used to access services like Scrcpy (for Android) or the web version of TeamViewer, although these are more exotic methods for specific tasks than an everyday solution.
If your TV is not Smart, but has an HDMI input, you can purchase a special adapter, for example, Microsoft Wireless Display Adapter or any other Miracast-enabled device. It connects to the HDMI port and is powered by USB, creating a signal receiving point that your computer will see as a regular wireless monitor.
Why doesn't my computer see my TV in the list of wireless displays?
Most often, the problem lies in the network settings. Make sure both devices are connected to the same network (not a guest network) and the network type in Windows is set to "Private." You may also need to update your Wi-Fi adapter drivers.
Is it possible to play shooters via Wi-Fi on a TV?
Technically possible, but highly discouraged. Even under ideal conditions, latency is 30-50ms, which is excessive for competitive shooters. For more casual, story-driven games, it's perfectly acceptable.
How do I turn off the sound on my computer if it's coming through my TV?
Click the volume icon in the Windows system tray, select the audio output device, and switch it back to your computer speakers or connected headphones. Video streaming does not necessarily require audio.
Does a wireless monitor affect internet speed?
Yes, because the video stream takes up a significant portion of the Wi-Fi channel. If you're streaming 4K video, other devices on the network may not have enough bandwidth to work comfortably.