Modern televisions have evolved from simple devices for receiving over-the-air channels into full-fledged multimedia centers capable of streaming content from the internet. However, built-in Smart TV apps aren't always user-friendly, offer limited functionality, or simply don't support the file formats you need. This is where the question arises: how to connect a PC to a TV via Wi-Fi for online viewing, allowing you to project your monitor's content onto the big screen without the hassle of unnecessary wires.
There are several proven methods for achieving this goal, each with its own advantages and limitations. The optimal method depends on your TV model, computer operating system, and the availability of additional equipment. In this article, we'll take a detailed look at the most effective wireless data transmission technologies, including Miracast, DLNA and the use of external adapters.
Some methods simply allow you to stream a picture, while others provide full media management. It's important to understand the difference between screen mirroring and video streaming, as both directly impact image quality and network load. Let's review the main connection options so you can choose the best one for your home network.
Miracast and Wireless Display in Windows
The fastest way to display an image from your computer screen on a TV is to use technology MiracastThis standard allows for video and audio transmission over a local Wi-Fi Direct network without the need for a router, although in most cases both devices must be on the same network. In Windows 10 and 11, this feature is built-in by default and is called "Connect."
To get started, make sure your TV supports Screen Mirroring, Intel WiDi, or Anyview Cast. Your remote often has a dedicated button for launching casting mode. After activating the feature on your TV, go to the notifications menu on your computer or use a keyboard shortcut. Win + KThe system will begin searching for available devices, and after a few seconds you will see the name of your TV in the list.
⚠️ Note: When using Miracast, image quality may depend on Wi-Fi network congestion. If you notice cursor lag or artifacts on the screen, try disabling other devices that are actively consuming data.
It's worth noting that this method is ideal for showing presentations or viewing photos, but the wireless channel may not provide sufficient bandwidth for fast-paced games or high-definition movies. It's also important to ensure your PC's wireless adapter drivers are updated to the latest version, as older software versions often don't support the standard. Wi-Fi Direct.
- 📺 On your TV, activate the “Broadcast” or “Screen Mirroring” mode in the signal sources menu.
- 💻 On PC, click
Win + Kand select your TV from the list of found devices. - 🔒 When connecting for the first time, a permission request may appear on the TV screen, which you will need to confirm with the remote control.
Using DLNA to stream media files
If your goal is not to duplicate your desktop, but to play movies, music or photos stored on your hard drive, then the technology DLNA (Digital Living Network Alliance) is the best option. It allows the TV to view shared folders on the computer as external drives. Unlike Miracast, it places the load on the TV's decoder, which often results in more stable playback of large files.
In the Windows operating system, DLNA implementation is built into the standard "Streaming Media" functionality. You don't need to install any third-party software; you just need to configure the access settings correctly. Open "Streaming Media Settings" from the Control Panel or search, enable this option, and allow access to your TV. Then, in the signal sources menu (button) Input or Source) a new item will appear on the TV remote control - the name of your computer.
Why can't the TV see the files?
Often, the problem lies in the codec format. The TV may recognize the file but not play it if it doesn't support the audio track (e.g., DTS) or the video container. In this case, installing a third-party player on the TV, such as VLC or MX Player, can help.
However, the standard Windows tool has limitations: it doesn't support all video and audio formats. If your TV's built-in player can't open the file, you'll need a third-party DLNA server. Programs such as Plex, Universal Media Server or DLNA Server, can broadcast video on the fly, recoding it into a suitable format if the TV's power is insufficient for playback.
Connection speed is essential for stable DLNA operation. To view videos in HD resolution 4K With high bitrates (over 60-80 Mbps), a standard 2.4 GHz Wi-Fi band may not be sufficient. In this case, it is recommended to use a dual-band router and connect the TV to the network. 5 GHz.
| Parameter | Windows Media (DLNA) | Plex Server | Built-in TV player |
|---|---|---|---|
| Format support | Basic | High (with transcoding) | Depends on the model |
| Interface | Folder list | Beautiful cover and description | List of files |
| Setting up | Minimum | Requires registration | Not required |
Broadcast via Google Chrome browser and Chromecast
One of the most versatile solutions for online viewing is using a browser. Google Chrome and technology ChromecastThis method allows you to cast a browser tab or your entire desktop to your TV if it has built-in Cast support or a Chromecast/Android TV box is connected.
To start casting, open the Chrome browser on your computer. Click the three dots in the upper-right corner of the menu and select "Cast." The browser will prompt you to select a output device. You can cast only the current tab, which saves system resources, or select "Cast Screen" to display everything that's happening on your PC monitor.
This method is especially convenient for viewing video content from websites that don't have a native TV app or block output to external screens via standard protocols. Picture quality in tab mode is typically higher, as the video stream is transmitted directly rather than re-encoded as a desktop image.
Keep in mind that streaming your entire system significantly increases the load on your computer's processor. If you're running a heavy game or a 4K video, your computer may lag, and the picture on your TV may flicker. For a comfortable experience watching online movies in your browser, it's best to use streaming mode in a separate tab.
Third-party apps for control and broadcasting
The software market offers a variety of solutions that expand the capabilities of standard protocols. If built-in Windows or Smart TV tools are unstable, it makes sense to turn to specialized applications. One of the leaders in this niche is LetsView, which allows you to stream your screen from your PC to your TV and back for free.
Another powerful tool is a media server. PlexIt turns your computer into a fully-fledged media database. The program scans your hard drives, finds movie covers, descriptions, and cast lists, and creates a beautiful library. The Plex app is installed on your TV, which pulls data from your computer. It's the perfect option for creating a home theater.
⚠️ Important: When installing third-party software, carefully monitor any additional offers. Some free versions of programs may contain ads or attempt to install unnecessary toolbars. Download software only from the developers' official websites.
There are also remote control apps such as TeamViewer or AnyDesk, which can theoretically be used for remote control, but are poorly suited for video viewing due to their low frame rate. For multimedia, it's better to use specialized solutions designed for low-latency video streaming.
- 📲 LetsView — a simple solution for wireless screen mirroring.
- 🎬 Plex — creation of a beautiful media library with posters and descriptions.
- 🎮 AirPlay - If you have a Mac and Apple TV, this is the best option for the Apple ecosystem.
Hardware Solutions: HDMI Adapters and Set-Top Boxes
If your TV isn't a Smart TV or its built-in Wi-Fi module isn't working properly, external devices can solve the problem. The most popular option is to use adapters like Google Chromecast, Amazon Fire TV Stick or Xiaomi Mi StickThese small gadgets plug into the HDMI port and essentially turn a regular TV into a smart one.
These set-top boxes have their own operating system (usually Android TV) and Wi-Fi receiver, which reduces the load on the TV and ensures more stable operation. Connecting a PC to such a device follows the same process as with a built-in Smart TV: via the "Cast" menu in Windows or Chrome.
☑️ Choosing a TV device
The advantage of external set-top boxes is their versatility and upgradeability. While a TV may become obsolete after 3-4 years and stop receiving app updates, a new set-top box will restore its full functionality. Furthermore, they often support more modern codecs and wireless standards.
There are also special wireless HDMI transmitters that work as a transmitter-receiver pair. They don't require network or router configuration, creating a direct connection. However, such devices are typically more expensive and have a limited range, requiring a direct line of sight between the PC and TV.
Network optimization and troubleshooting
The quality of your wireless streaming directly depends on the condition of your local network. If you experience a "croaking" sound while watching a video, the image appears blocky, or the audio lags behind the video, your channel bandwidth is insufficient. The first step should be checking your Wi-Fi range.
The 2.4 GHz band is heavily congested in apartment buildings, as it's used not only by neighbors' routers, but also by microwave ovens, Bluetooth devices, and baby monitors. For video streaming, it's highly recommended to switch your TV and computer to the 2.4 GHz band. 5 GHzIt provides much higher speed, although it has a shorter range.
⚠️ Please note: TV interfaces and operating system versions are constantly being updated. The location of menu items or their names may differ from those described in the instructions. If you can't find the option you need, check the "Help" section in your device's settings or the manufacturer's official website.
It's also worth checking if there are any background processes actively downloading data (torrents, game updates) running on your computer. If your router is old and doesn't support the standard 802.11ac or ax (Wi-Fi 6), its replacement can dramatically improve the situation with wireless content transmission throughout the entire apartment.
Frequently Asked Questions (FAQ)
Why doesn't the TV find the computer in the list of devices?
Make sure both devices are connected to the same Wi-Fi network (sometimes routers create two networks with similar names, such as Home and Home_5G). Also, check your Windows Firewall settings: the network should be marked as "Private" and not "Public," otherwise the system will block detection.
Is it possible to play PC games on TV via WiFi?
Technically, this is possible via Miracast or Steam Link, but input lag over a wireless network can be noticeable. For shooters or racing games, this will make play uncomfortable. For turn-based strategy or card games, the lag won't be a problem.
Which cable is better: HDMI or WiFi?
An HDMI cable will always provide the best image quality, uncompressed audio, and zero latency. WiFi is used solely for convenience and cable-free operation, but it lacks signal stability and maximum bitrate.
The video is lagging while streaming, what should I do?
Try lowering the video resolution in your online player (for example, from 4K to 1080p). If this doesn't help, reboot your router, move your computer closer to the access point, or switch to a wired connection for your PC.