Modern technology allows you to completely eliminate unnecessary cables, turning watching movies or presentations into a comfortable experience. Sharing your laptop screen with a larger display wirelessly is a standard feature available in most operating systems. You don't need to worry about HDMI cables if both devices support the standard. DLNA, Miracast or AirPlay.
The setup process may vary depending on your TV manufacturer and computer operating system. In this article, we'll cover all available connection methods in detail, from built-in Windows tools to third-party apps for macOS. You'll learn how to set up synchronization in just a few minutes and troubleshoot common audio or image lag issues.
To get started, make sure your laptop and TV are connected to the same Wi-Fi network. This is critical for device detection. If your router supports the 5 GHz band, it's best to use it for maximum data transfer speeds and minimal lag.
Basic technologies for wireless video transmission
Before setting up, it's important to understand the differences between streaming technologies, as they offer different quality and functionality. The most common standard is Miracast, which allows for real-time screen mirroring with minimal latency. This technology is built into most modern TVs and the Windows operating system.
Apple device owners use the protocol AirPlay, which ensures stable transmission of high-quality video and audio. This technology is often used for Android devices and Google TV. Google Cast (Chromecast built-in), which allows you to broadcast the contents of browser tabs or the entire desktop. There is also a standard DLNA, which is focused on transmitting media content (video files, photos), rather than the full screen.
The choice of method depends on your needs: Miracast is best for gaming or work, while DLNA is better for watching downloaded movies. It's important to note that some older TV models may not support hardware video encoding, which will result in a choppy picture.
Connecting a Windows 10/11 laptop to a TV
Windows 10 and 11 operating systems have a built-in projection feature that doesn't require any additional software. To get started, open the Action Center by pressing the key combination. Win + A, and select the button Project (or Connect). The system will begin searching for available wireless displays on your network.
If your TV doesn't appear in the list, check its settings. The remote control often has a dedicated button for selecting a source or launching Screen Mirroring. This option may be called "Screen Casting," "Smart View," "Wireless Display," or "Miracast" in the TV menu.
After selecting your TV from the list, you may see a connection confirmation prompt on your computer. Accept this prompt using the remote control. Once paired successfully, you'll see the Windows desktop on the big screen. You can change the operating mode by pressing Win + P and selecting "Second screen only" or "Extend".
⚠️ Note: If you're using a corporate Wi-Fi network with client isolation enabled, your computer and TV may not be able to see each other even when connected to the same router. In this case, you'll need to use a guest network or personal hotspot.
Streaming from macOS to Smart TV (AirPlay and more)
MacBook users can use the native AirPlay feature if their TV supports this protocol (for example, recent Samsung, LG, Sony models, or Apple TV). To start casting, click the icon Control center in the menu bar and select Screen mirroringSelect your TV from the list of devices.
In some cases, you may be asked to enter a code displayed on the TV screen to confirm the connection is secure. This is a standard security measure to prevent unauthorized access. Once connected, you can select the resolution and frame rate in the display settings.
If your TV doesn't support AirPlay 2, you can use third-party reactor apps that emulate an AirPlay receiver. Popular solutions include AirServer or Reflector, installed on a PC connected to the TV, or using built-in browsers with Cast support to stream tabs.
If the laptop is located far from the access point, image artifacts may occur. In such cases, it is recommended to move the computer closer to the router or use the 5 GHz band.
Using browsers and DLNA to view media
If your goal isn't to mirror your desktop, but to view movies or photos stored on your laptop, it's more convenient to use DLNA technology or built-in browser features. Google Chrome and Microsoft Edge both offer a "Cast" feature that lets you send a tab or the entire screen to a Chromecast-enabled TV.
To activate, click on the three dots in the upper right corner of the browser, select Broadcast (or Save and share → Cast). The system will prompt you to select a source: the current tab, the entire screen, or an audio file. This is a great way to show a presentation or video from a website.
DLNA servers allow you to stream local files without opening a browser. In Windows, this feature is called "Stream Media." Simply right-click on a video file, select Transfer to device and specify your TV. The TV will automatically decode the file, offloading the laptop's processor.
| Method | Best suited for | Latency | Quality |
|---|---|---|---|
| Miracast / WiDi | Games, work, presentations | Low / Medium | High (Full HD/4K) |
| AirPlay 2 | Apple users, photos, videos | Low | Very high |
| Google Cast | Web content, YouTube, Netflix | Average | Depends on the network |
| DLNA | Watching downloaded movies | None (buffering) | Original file |
Sound adjustments and eliminating delays
A common issue with wireless connections is audio and video desynchronization or a missing audio stream. By default, Windows may continue to output audio through your laptop's speakers. To fix this, click the speaker icon in the system tray, select the output device, and select your TV or wireless audio device.
Input lag can be disruptive in fast-paced games. To minimize this effect, enable Game Mode on your TV, which disables unnecessary image post-processing. Also, make sure your laptop isn't running any bandwidth-consuming background tasks, such as torrents or updates.
If the audio is choppy or crackling, try lowering the audio bitrate in the playback device settings. Restarting the router can sometimes help, as an overflowing router buffer can cause data packets to leak. You can prioritize traffic for your laptop in your router settings (QoS).
⚠️ Please note: TV menu interfaces and operating systems are constantly being updated. Item names may differ from those described in the instructions. Always consult the manufacturer's official documentation for your specific model if you cannot find the option you need.
Troubleshooting and Frequently Asked Questions
If you can't connect, run some basic diagnostics. Make sure Wi-Fi is enabled on both devices and they are in a strong reception area. Check if your router is set to "Guest Network" mode, which isolates the devices from each other. You should also update your laptop's wireless adapter drivers.
Sometimes resetting network settings helps. On Windows, you can do this via Settings → Network & Internet → Network resetOn your TV, try disabling the "Fast Startup" feature and performing a full reboot, rather than simply putting it into sleep mode.
In complex cases where standard methods fail, you can use third-party software, such as Let's View or ApowerMirror. These programs establish a direct connection, bypassing some protocol limitations, but may require installing a client app on both the TV (if its OS supports it) and the computer.
Why doesn't the TV detect the laptop even though Wi-Fi is on?
The most common problem is that the devices are connected to different frequency bands (2.4 GHz and 5 GHz), which the router doesn't combine into a single network, or client isolation is enabled. It's also possible that the receiver app (Screen Share) isn't running on the TV.
Is it possible to broadcast an image if there is no internet, only a local network?
Yes, Miracast and DLNA technologies don't require internet access; a local network is sufficient. However, initial Smart TV setup and downloading drivers or receiver apps may require internet access.
Does screencasting affect internet speed?
When using Miracast or AirPlay, traffic flows within the local network and doesn't consume your ISP's internet bandwidth. However, if you're streaming online video (like YouTube via a browser), your bandwidth is used twice: for downloading to your laptop and for streaming to your TV.