Modern technologies make it possible to transform any Smart TV into a powerful multimedia center capable of displaying content from computers, smartphones, and tablets without the need for unnecessary cables. Streaming images from a web browser to a large screen is one of the most popular home network usage scenarios, allowing you to watch movies, present work projects, or share photos with the whole family. Wireless connection Not only does it eliminate the need to run long HDMI cables across the room, but it also provides sufficient bandwidth to transmit high-definition video.
When transferring data over a local network, two main devices are involved: the signal source (your laptop or phone) and the receiver (your TV). For successful synchronization, it's critical that both devices are on the same subnet and using unified media transfer protocol standard, be it DLNA, Miracast, or proprietary solutions like AirPlay. If the router is configured correctly and the devices are "visible" to each other, the setup process takes only a few minutes, regardless of the source operating system.
In this article, we'll take a detailed look at all available connection methods, from built-in browser features to Windows and macOS system settings. You'll learn how to avoid lag, why sound sometimes drops out, and which router settings can block the connection. We'll cover both software methods and hardware limitations you might encounter when setting up a connection. wireless streaming.
Wireless image transmission technologies
Before you begin setting things up, you need to understand the technologies behind the streaming process. The primary standard for transmitting multimedia content over a local network is DLNA (Digital Living Network Alliance). This protocol allows devices to exchange media files, but technologies like screen mirroring.
For Android devices and Windows systems, the protocol has become the de facto standard. MiracastIt allows for the transmission of video and audio in real time, creating a direct connection between devices (Wi-Fi Direct) or via a router's access point. The Apple ecosystem uses this technology. AirPlay, which provides similar functionality but requires a compatible receiver, such as Apple TV or TVs with built-in AirPlay 2 support.
Modern browsers, such as Google Chrome and Microsoft Edge, have built-in mechanisms for discovering output devices on the network. They use the protocol Google Cast (Chromecast built-in), which allows you to cast a tab or the entire desktop to your TV. This is the most universal method, working on most platforms.
- 📺 Miracast — standard for Windows and Android, provides screen mirroring.
- 🍏 AirPlay — Apple's proprietary protocol for iOS and macOS devices.
- 🌐 DLNA/UPnP — used for file transfer, less often for streaming tabs.
- 🎯 Google Cast — technology for broadcasting the content of the Chrome browser and applications.
⚠️ Note: Some older TV models may not support newer versions of encryption protocols. If your device is not online, check if your TV requires a firmware update.
It's important to note that streaming quality directly depends on your Wi-Fi bandwidth. 4K video requires a stable 5 GHz connection, while Full HD may be sufficient with 2.4 GHz, although compression artifacts may occur.
Preparing equipment and network
Successful streaming is impossible without properly prepared infrastructure. The first and most important requirement is that all devices are on the same local network. This means that both the computer and TV must be connected to the same router. If you have a dual-band router, ensure that the devices aren't on different guest networks or isolated VLANs.
Check your router settings. Function AP Isolation Client Isolation is often enabled by default on public networks, but can also be enabled at home. It prevents devices connected to Wi-Fi from communicating with each other, making streaming to a TV impossible. It's also worth making sure your firewall isn't blocking ports used for device discovery (usually UDP 1900 for DLNA/SSDP).
To ensure smooth playback without jerking and buffering, it is recommended to use the standard Wi-Fi 5 (802.11ac) or newer. If your router only supports the older 802.11n standard, image quality may suffer, especially with high video bitrates.
☑️ Network readiness check
If you're using a wired connection for your TV (Ethernet), make sure your computer is also on the same subnet. Mixed connections (Wi-Fi + LAN) work correctly if the router correctly routes traffic between the LAN ports and the wireless interface.
Broadcasting via Google Chrome browser
The easiest and most common way to display an image is to use the built-in cast function in the browser. Google ChromeThis method works on Windows, macOS, Linux, and even Chromebooks. It doesn't require installing any additional software, as the functionality is already integrated into the browser.
To get started, open your browser and navigate to the website or video you want to show. In the upper right corner, click the menu button (three dots) and select Save and share → Broadcast... (Cast). In the window that opens, the browser will begin searching for available devices on your network.
If your TV supports Chromecast built-in or has a connected Chromecast/Android TV box, it will appear in the list. Before connecting, you can choose what to stream: Tab, Full screen or FileSelecting "Full Screen" will display any applications running on your computer, not just the browser.
| Parameter | Description | Recommendation |
|---|---|---|
| Permission | Depends on the source monitor | Use 1920x1080 for stability |
| Frame rate | Usually 60 FPS | Reduce FPS to 30 when there are lags |
| Audio | Transmitted automatically | Check the volume mixer |
| Delay | 1-3 seconds | Good for video, bad for gaming |
It's important to understand that when streaming a tab, the browser encodes the video stream in real time, which puts a strain on the processor. If the video is lagging, try closing unnecessary tabs or reducing the playback quality in the player on the website.
Why is there no sound during the broadcast?
There may be no sound if you're only casting a tab and the website uses DRM protection or an incorrect audio codec. In this case, switch to "Cast Full Screen" or "Cast File" mode to transmit audio using the system stream.
Using Windows and macOS system functions
Operating systems offer native tools for connecting to wireless displays, which operate at the driver level and often provide better performance than browser extensions. Windows 10 and 11 use this technology. Miracast, accessible through the notification center.
To start broadcasting in Windows, press the key combination Win + KThe "Connection" panel will open on the right. If your TV supports Miracast and is online, it will appear in the list. After selecting the device, your computer screen will be mirrored to the TV. You can change the operating mode via Parameters → System → Display, selecting "Duplicate" or "Extend".
macOS users can use the feature AirPlay to Mac Or connect to an Apple TV. In the Control Center menu, select "Screen Mirroring" and select your TV. Both devices must support AirPlay 2. This ensures high stability and integration with the Apple ecosystem.
⚠️ Note: When using Miracast on Windows, antivirus software or third-party firewalls may block the connection. If the connection fails, temporarily disable your third-party network security software to test.
In some cases, your graphics card driver may not support wireless connectivity. Make sure you have the latest drivers installed from the manufacturer's official website (NVIDIA, AMD, or Intel), as standard Windows drivers may not have full functionality.
Setting up DLNA and Smart View on Samsung and LG
TV manufacturers often implement their own implementations of transmission protocols. For example, TVs Samsung use Smart View technology, and LG — Screen Share. These features are often based on Miracast, but have their own unique settings menu.
On Samsung TVs, go to the Source menu and select "Connect to mobile device" or launch the Smart View app. On LG TVs, press the "Input" or "Settings" button and find "Connect to mobile device" → "Screen Share." Once this feature is enabled, the TV goes into connection standby mode.
For computers with Intel processors, an application is often available Intel Connect (formerly Intel WiDi), which simplifies the search for LG and Samsung TVs. It automatically configures the optimal resolution and frame rate settings for the selected TV model.
- 📱 Samsung Smart View — allows you not only to broadcast your screen, but also to control your TV from your PC.
- 🖥️ LG Screen Share — supports the Miracast standard and requires connection confirmation on the remote control.
- 🔄 Software update — often solves compatibility issues with new versions of Windows.
It's worth noting that connecting via proprietary utilities may activate "Game" mode on the TV, which reduces input lag but may reduce image processing quality (noise reduction, smoothing). For watching movies, it's better to use "Movie" or "Standard" mode.
Quality solution and optimization
Even with proper setup, users may encounter issues such as audio and video desync, low resolution, or intermittent connection drops. Most often, these issues are caused by Wi-Fi congestion or insufficient signal strength.
If the image is choppy or artifacts appear, try moving closer to the router or removing any physical obstacles between the source and receiver. Metal structures, mirrors, and microwave ovens can cause significant interference, especially in the 2.4 GHz band.
⚠️ Note: TV and computer menu interfaces may differ depending on the software version. If you don't see the options described, check the official documentation from the manufacturer of your specific model, as function names may change.
To diagnose problems, you can use the command ping in the command line. Enter ping TV_IP_address -t and monitor the response time. If it exceeds 50-100 ms or packet loss (timeouts) is observed, the problem lies with the wireless signal quality, not the broadcast settings.
It's also worth checking if other devices on the network are running background downloads. If someone is downloading large files or playing online games, their bandwidth may be occupied, resulting in a drop in video stream quality.
FAQ: Frequently Asked Questions
Is it possible to display an image if the TV is not Smart?
Yes, you'll need an external set-top box, such as a Chromecast, Apple TV, Amazon Fire Stick, or Android Box. These devices connect to the HDMI port of a standard TV and add Smart TV functionality, allowing you to stream content over Wi-Fi.
Why does the video stutter when broadcasting?
This could be caused by slow Wi-Fi speeds, using the 2.4 GHz band instead of 5 GHz, or the router being too far away. Also, try reducing the video quality in your browser's player from 4K to 1080p.
Will HDMI transmit audio when connected wirelessly?
Yes, when using Miracast, AirPlay, and Google Cast, audio is transmitted along with video. Make sure the "Speakers (Name of your TV)" output device is selected in your Windows or macOS sound settings.
Does broadcasting affect internet speed?
Streaming within a local network (from a computer to a TV) doesn't consume internet traffic, as data is transferred directly between devices via the router. Internet access is only required to download content from the network (for example, YouTube).