Modern multimedia content requires large screens, and there is often a need to display photos, a running movie, or a presentation directly on the TV, bypassing cables. Wireless signal transmission HDMI has become a standard available in virtually every smart device, eliminating the hassle of HDMI cables. The process of synchronizing the signal source and receiver may vary depending on your computer's operating system and the platform installed on your TV.
There are several basic protocols that provide stable communication between devices in a local network. Technologies Miracast, DLNA And AirPlay They work differently, giving users flexibility in choosing their connection method. In this article, we'll take a detailed look at how to set up screen sharing on various platforms, troubleshoot common issues, and explore the nuances of working on a home network.
Before proceeding with the settings, you need to make sure that your equipment is ready for use. Both devices must be connected to the same Wi-Fi network., otherwise they simply won't see each other in the list of available receivers. This is a fundamental requirement, and ignoring it is the cause of most connection problems.
⚠️ Note: If your router operates in two bands (2.4 GHz and 5 GHz), make sure that your computer and TV are connected to the same frequency, as some older routers may isolate devices on different bands from each other.
Preparing equipment and network
The first step is always to check hardware compatibility and network status. To enable wireless data transfer, your TV must support Smart TV technology or be connected to a set-top box, such as Apple TV, Android Box or ChromecastThe computer, in turn, must have a working Wi-Fi module or an Ethernet connection to the same local network.
Connection stability directly depends on the quality of the wireless network signal. If you plan to stream high-resolution video, such as 4K or Full HD, the channel bandwidth must be sufficient to transfer large amounts of data without buffering. It is recommended to use routers with the following standard: Wi-Fi 5 (802.11ac) or newer to minimize delays.
Check that device discovery is enabled on your TV. You'll often need to enable signal reception mode in the network or connection settings menu. Older models may require installing special software or updating the firmware to the latest version.
Stream from Windows via Miracast and Wi-Fi Direct
Windows 10 and 11 operating systems have built-in wireless display functionality based on the Miracast standard. This allows you to mirror your screen or extend your desktop without installing third-party drivers. The technology works directly between devices, creating a secure connection.
To start broadcasting, press the key combination Win + K on the keyboard. The "Connection" panel will appear on the right, where the system will begin searching for available displays within Wi-Fi range. If your TV supports Miracast, its name will appear in the list within a few seconds.
Select your device from the list and wait for confirmation on the TV screen. On some models Samsung, LG or Sony You may need to allow the connection by pressing the "Accept" button on the remote control. After this, the image from the computer monitor will appear on the large screen.
☑️ Checking the Miracast connection
If the system reports that the device is not found, check the projector settings. Go to Settings → System → Project to this PC and make sure the feature is enabled. It's also worth updating your graphics card and wireless adapter drivers, as older software versions may not support the necessary compression codecs.
⚠️ Please note: TV menu interfaces may vary from manufacturer to manufacturer. For the exact wireless connection function (Screen Share, Smart View, Mirroring), please refer to the user manual for your specific model.
Using DLNA to stream media
Unlike Miracast, which broadcasts the entire screen, the protocol DLNA It's designed for transferring specific files: videos, music, and photos. This method is ideal if you want to play a movie from your computer's hard drive on your TV while still being able to use your PC for other tasks.
To implement this method, you'll need a media server. Windows has this built-in feature called "Media Streaming." You can activate it through the Control Panel or the folder context menu. Simply right-click the video folder and select Stream to device.
On your TV, launch the client app, often called "Media," "Gallery," or "Smart Share." Select your computer from the list of sources. The folder structure will be preserved, and you'll be able to navigate through the files using the remote.
The advantage of DLNA is that video decoding is handled by the TV, not the computer. This reduces the load on the CPU and allows for high-quality playback even on less powerful laptops. However, playback controls (such as rewinding and pausing) may be less responsive than with local players.
Why can't the TV see the files?
If your TV can't display files in a certain format, it may not support that codec. In this case, installing a third-party player on your TV or converting the video may help.
AirPlay for macOS and Apple TV users
Computer owners MacBook And iMac have access to the Apple AirPlay ecosystem, which provides the highest transmission quality and minimal latency. For this technology to work, the TV must support AirPlay 2 (many modern models do). Samsung, Sony, Vizio) or be connected via a set-top box Apple TV.
Click the Control Center icon in the macOS menu bar or use the keyboard shortcut to open Control Center. Select Screen Mirroring and select your TV. If a code appears on the screen, enter it on your computer to pair.
AirPlay not only mirrors your screen but also outputs audio to external speakers or a subwoofer connected to your TV. Picture quality adapts dynamically based on your Wi-Fi connection speed, ensuring smooth playback even in the presence of interference.
Broadcast via Google Chrome browser and Chromecast
If you don't have a Smart TV, but you have a set-top box Chromecast or a TV with a built-in function Google CastYou can use the Google Chrome browser to cast any tab or the entire desktop. This is a universal method that 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 Broadcast... (Cast). In the window that opens, select the source: a browser tab, a file, or the entire screen.
This method is especially convenient for displaying web content, Google Slides presentations, or videos from websites that don't have a built-in Cast button. The browser encodes the video stream and sends it to the receiving device.
| Method | Best use | Delay | Quality |
|---|---|---|---|
| Miracast | Screen mirroring, presentations | Low | High |
| DLNA | Watching movies, photos | Absent | Original |
| AirPlay | Apple ecosystem | Minimum | Very high |
| Chrome Cast | Web content, tabs | Average | Depends on the network |
Solving connection and quality issues
Despite the simplicity of the technology, users may encounter issues with audio and video desynchronization, image artifacts, or connection interruptions. Most often, this is due to congestion on the Wi-Fi channel or a weak signal.
Try turning off other devices consuming bandwidth or moving the router closer to the viewing area. If the issue persists, check the power saving settings of your Wi-Fi adapter on your computer. The system may reduce transmission power to conserve energy, which can negatively impact streaming stability.
You can use the command line for diagnostics. Enter the command ping [TV IP address] (if known) or ping [router-IP-address]to check the stability of the response. High ping (>100 ms) or packet loss indicate network issues, not a faulty TV.
⚠️ Warning: Antivirus programs and Windows firewalls may block incoming connections for broadcast protocols. If the connection fails, temporarily disable protection or add an exception for the "Network" feature.
Can you play games over Wi-Fi?
Playing fast-paced shooters over wireless streaming is challenging due to input lag. For static or turn-based games, this method is perfectly adequate.
Frequently Asked Questions (FAQ)
Why does the video jerk or stutter when streaming?
This indicates low Wi-Fi channel throughput. Try