Modern technology allows you to completely eliminate unnecessary wires, turning your living room into a true media center. If you have a computer with a movie collection and a Smart TV connected to the same wireless network, you can stream content in seconds. This eliminates the need to copy files to a flash drive or connect your laptop with an HDMI cable.
In this article, we'll cover all the current methods for wireless image streaming. You'll learn how to use built-in Windows tools, set up a media server for automatic library access, or use a browser for quick streaming. Each method has its own advantages depending on your operating system and TV model.
Playback quality directly depends on the stability of the router signal. To view video in the following resolution: 4K or Full HD To ensure a smooth connection without interruptions and buffering, both devices must be within a strong reception area. Before setting up, make sure your router supports the standards Wi-Fi 5 (802.11ac) or newer for maximum throughput.
Using the built-in Connect feature in Windows
Windows 10 and 11 operating systems come with a native tool for wireless display. This technology is based on the standard Miracast, which is supported by most modern TVs. You don't need to install any additional software; just make sure your Wi-Fi adapter drivers are updated to the latest version.
To get started, press the key combination Win + K on the keyboard. The "Connection" panel will appear on the right, where the system will search for available displays on your local network. Select your TV from the list, and after a few seconds, the entire desktop or desktop window will be copied to the big screen.
This method is ideal for showing presentations or watching videos from browser windows that don't have a built-in Cast button. However, keep in mind that transmitting a video stream via Miracast can put a slight load on the processor. If you notice audio and video out of sync, try lowering the resolution in the display settings.
Why is my TV not visible in the Windows list?
If your PC or TV doesn't support Miracast directly, the system may not detect the device. In this case, on older TV models, you'll need to manually launch the Screen Share or Miracast app in the TV's app menu before searching from your computer.
An important nuance is the ability to select the projection mode. By pressing Win + P, you can select "Repeat" to duplicate your screen or "Extend" to use your TV as a second monitor. This allows you to watch a movie on your TV while continuing to work on documents on your laptop monitor.
Setting up a DLNA server to access media files
Technology DLNA (Digital Living Network Alliance) allows you to stream media files directly from your computer's folders, eliminating the processor's processing burden of image encoding. In this case, the TV acts as a standalone player, reading data from the PC's hard drive. This ensures the best picture quality and the absence of lag.
To enable this feature, open Windows Settings, go to Network & Internet, and select Sharing Options. Turn on network discovery and file sharing. Then, find Stream Media (or Stream Media Settings) in the menu and allow access for your TV.
After setting up, press the signal source selection button on the TV remote control (usually marked as Input or Source). Your computer will appear in the list of available devices. Once you log in, you'll see a folder structure from which you can launch any video file.
The advantage of DLNA is its subtitle support and the ability to control playback with your TV remote. You can pause, rewind, and adjust the volume without touching your computer keyboard. However, the file format must be supported by the TV's built-in codec, otherwise playback will not start.
Broadcasting via Google Chrome browser
If you don't have a Smart TV, but you have a set-top box Chromecast or a TV with a built-in Android TVThe easiest way is to use the Google Chrome browser. This method is universal and works on any operating system with this browser installed.
Open the tab with the video file (if it's online) or simply open a new tab. Click the three dots in the upper-right corner of the menu and select "Cast." The browser will prompt you to select the target device and the casting source: a tab, desktop, or file.
A unique feature of this method is the ability to cast individual tabs. You can watch a movie on your TV while other websites are open on your computer. Switching between tabs on your PC won't interrupt playback on the big screen if the "Cast Tab" option is selected.
To play local files, drag the video file directly into the browser window. Once the video starts playing, open the streaming menu again. Streaming quality depends on the power of your Wi-Fi router, as the browser encodes the video stream in real time.
Comparison of wireless connection methods
The optimal method depends on your goals: whether you need to mirror your entire screen or simply play a video file. Different technologies have different system resource and network requirements.
| Method | Latency | Image quality | PC load |
|---|---|---|---|
| Miracast | Low | High (depending on signal) | Average |
| DLNA | Absent | Original (uncompressed) | Minimum |
| Chrome Cast | Average | Good (browser compression) | High |
| AirPlay (Mac) | Low | High | Average |
As you can see from the table, for watching heavy movies in high bitrate it is best suited DLNAIt doesn't require the computer to constantly encode the video stream. For gaming or sharing program interfaces, Miracast is preferable due to its faster response time.
If you use Apple devices, the ecosystem offers its own protocol AirPlayIt works similarly to Miracast, but is optimized for Apple devices. On Windows, third-party server emulators are required to use AirPlay.
Solving buffering and quality issues
A common issue with wireless streaming is choppy playback or artifacts. This is often due to the computer and TV being on different Wi-Fi frequencies. Make sure both devices are connected to the same frequency, preferably 5 GHz.
☑️ Diagnosing Wi-Fi problems
Your antivirus or Windows Firewall may be blocking the connection. If your TV doesn't detect your computer when setting up DLNA, temporarily disable network protection or add the Media Server app to the exceptions list. Often, the issue lies in the network profile: it should be set to "Private" rather than "Public."
It's also worth paying attention to the number of connected devices. If the network is overloaded with torrents or downloads on other devices, the bandwidth may not be sufficient for the video stream. In this case, close unnecessary programs on your PC that are consuming bandwidth.
⚠️ Attention: When using Miracast or screen mirroring, your computer desktop is visible to everyone in the room. Remember to hide personal notifications, passwords, and messaging windows before sharing.
Using third-party applications
Standard tools don't always work perfectly, especially with specific file formats or older TV models. In such cases, specialized programs like Home Media Server or Plex.
These apps create a beautiful interface with movie covers and descriptions, turning your computer into a full-fledged online cinema. They automatically download metadata and sort collections by genre and year. Installing a Plex server on your PC requires account registration, but provides powerful functionality.
For users who just need to quickly transfer a file without setting up servers, there are utilities like VLC Media PlayerIn the "Playback" menu, select "Renderer," and the player will offer a list of available devices on the network. This is an easy way to play a video if the built-in tools aren't working.
Some TV manufacturers have their own PC utilities. For example, Samsung offers an app Smart View, and LG — Smart ShareThey can provide a more stable connection with devices of their brand than standard Windows protocols.
Frequently Asked Questions (FAQ)
Is it possible to stream a movie if the router is not connected to the Internet?
Yes, you can. For DLNA and Miracast to work, the computer and TV only need to be connected to the same router, which creates a local network. Internet access is not required to stream video files within the apartment.
Why is there no sound on the TV during broadcasting?
Your laptop is likely still the default audio output device in Windows. Click the speaker icon in the system tray, select the playback device, and switch to your TV or wireless headset.
Does my old TV support wireless streaming?
If your TV isn't a Smart TV, it won't be able to receive the signal directly. You'll need to purchase an external set-top box (such as an Android Box or Chromecast) that connects via HDMI and handles the Wi-Fi signal reception.
Does streaming a movie affect internet speed?
Using DLNA and local files doesn't drain your internet speed, as the traffic is kept within the local network. However, if you stream online videos from your browser (YouTube, Netflix), your data usage remains the same.