A modern home theater no longer requires complex wiring and bulky equipment racks. All you need is stable local network, a computer with a media library, and a Smart TV. Wireless transmission of high-quality video content has become the standard, eliminating the need for users to copy files to flash drives or use HDMI cables, the length of which often limits equipment placement.
There are several proven technologies that can accomplish this task, each with its own advantages and limitations. DLNA (Digital Living Network Alliance) remains the most universal standard for streaming media files, while Miracast Built-in Windows 10/11 features allow you to mirror your entire screen. The specific method you choose depends on your TV model, your computer's operating system, and the desired playback quality.
In this article, we'll take a detailed look at the technical nuances of setting up a local network, review popular media server programs, and troubleshoot common compatibility issues. You'll learn how to turn your personal computer into a powerful multimedia center accessible to all devices in your home without sacrificing image quality.
Home network and equipment requirements
The foundation of high-quality wireless broadcasting is a properly organized local network. To transmit video in high resolution 4K or Full HD With high bitrates, channel bandwidth is critical. The ideal scenario is to connect both devices—the computer and the TV—to the same router via cable connection or through the frequency range 5 GHz.
Using the range 2.4 GHz It's possible, but it can cause choppy connections and buffering when viewing large files. If your router is dual-band, make sure both devices are connected to the network. 5 GHzIn multi-apartment buildings, the airwaves are often clogged with signals from neighbors, which creates interference and reduces the actual data transfer rate.
It's also worth paying attention to your router settings. Some models have a function AP Isolation (Access Point Isolation), which by default prevents devices connected via Wi-Fi from "seeing" each other. This option must be disabled in the router's admin panel so that the TV can detect the computer on the network.
- 📡 Router with support for 802.11ac (Wi-Fi 5) or later for high speed.
- 💻 PC or laptop with Windows 10/11 or macOS operating system installed.
- 📺 Smart TV with support for DLNA, Miracast protocols or a built-in client (e.g. AllShare, Media Player).
- 🔌 Ethernet cable (recommended for PC) to reduce the load on the wireless channel.
Setting up sharing in Windows 10 and 11
Before running third-party software, you must properly configure the operating system's built-in settings. Windows must allow the device to be discovered on the network and access to media files. Open the Control Panel and go to Network and Sharing CenterHere you need to change the sharing settings.
In the "Private network" profile (or "Current profile"), activate the option Enable network discovery And Enable file and printer sharingThis is a basic requirement; without it, the TV will not be able to physically find the computer in the list of available devices. Without this step, any further actions will be useless.
⚠️ Important: If you're in a public place or using a guest Wi-Fi network, don't enable sharing. These settings are only secure in a trusted home environment where you control the connected devices.
Next, you need to configure the specific folders that will be available for streaming. Right-click the movie folder, select Properties → tab Access → Advanced settingsCheck the "Share" box and click the button Permissions, where for the group "Everyone" you need to set the rights to Reading.
☑️ Setting up access in Windows
Windows 10 and 11 also have a built-in "Streaming Media" service. Find it by searching in the taskbar. In the window that opens, click Enable media streamingThe system will prompt you to select devices that are allowed access. Find your TV model in the list and make sure the checkbox is checked. Allowed.
Using built-in Smart TV (DLNA) features
Most modern TVs come with built-in apps for working with media servers. Samsung may call this AllShare or simply Media player, LG has — Smart Share or Photo & VideoSony has a built-in player. The operating principle is the same for both: the TV acts as a renderer (client), and the computer acts as a server.
After setting up sharing in Windows, launch the media app on your TV. It will usually automatically scan the network and find available servers. You'll see your computer's name in the list of sources. Navigating to it will open the file structure of the folders you previously shared.
| Brand TV | Application name | Supported formats | Peculiarities |
|---|---|---|---|
| Samsung | Media Player / Vseshare | MKV, MP4, AVI, JPG | Good compatibility with subtitles |
| LG (WebOS) | Photos and videos | MP4, MOV, ASF | User-friendly interface, but weaker with codecs |
| Sony (Android TV) | Media player | All major formats | May require a third-party player for complex codecs |
| Xiaomi (Mi TV) | Media Center | MKV, TS, MP4 | Often requires VLC to be installed for full compatibility. |
It's important to understand that built-in TV players often have a limited set of codecs. If the video plays without sound or the image breaks up into squares, it means the TV can't decode the format natively. In such cases, third-party solutions can help.
Why doesn't the TV see the folders?
The problem often stems from the Windows Firewall. When you first launch a streaming media service, the system may block the connection. Check that the "Windows Media Player" or "Streaming Media" app is allowed in your firewall settings for private networks.
Third-party media servers: Plex, Kodi, Universal Media Server
If Windows' built-in tools aren't sufficient or you require more flexible library management, it's worth installing specialized software. The market leader is Plex Media ServerIt doesn't just stream the file, but also creates a beautiful wrapper with posters, descriptions, and cast listings, turning the file list into a fully-fledged online cinema.
Installing Plex on a PC requires account registration and initial library setup. The program automatically scans your hard drives, finds movie metadata, and sorts it. On your TV, install the Plex app (available on almost all Smart TV platforms), log in to your account, and gain access to all content.
The main advantage of such servers is the ability transcoding On the fly. If the TV doesn't support the video format, the server (PC) transcodes the stream in real time into a compatible format. This requires sufficient computer processing power, but guarantees playback of any file.
- 🎬 Plex: Beautiful interface, cloud functions, requires registration, some functions are paid.
- 📺 Kodi: The most powerful all-in-one combine, completely free, requires configuration, no native server for TV (only UPNP).
- 🛠️ Universal Media Server (UMS): Lightweight, does not require installation on TV (works via DLNA), ideal for weak PCs.
For users who want full control and do not want to depend on cloud services, Universal Media Server will be an excellent choice. It works on the same principle as DLNA, but with much more fine-grained codec and conversion settings than the standard Windows service.
⚠️ Warning: When using transcoding (Plex, Emby), the PC's CPU load can reach 100%. Make sure your computer's cooling system can handle it, especially when viewing 4K HDR content.
Screencasting and projection (Miracast and WiDi)
Sometimes you don't need to display a specific file, but rather the entire browser or desktop. Wireless display technologies are used for this. Windows 10 and 11 have a built-in "Connect" feature. Press the key combination Win + K, and the system will start searching for available wireless displays.
You need to launch the appropriate app on your TV. Samsung calls it Screen Mirroring, LG has — Screen ShareOn Android TV, this feature is often built into the system or accessed via the signal source button. Once paired, the image from the PC monitor will appear on the big screen.
This method is convenient for showing presentations or watching DRM-free videos in a browser. However, it's less suitable for watching high-quality movies due to latency and the potential for a reduction in bitrate when compressing the video stream.
It's worth noting that some content-protected apps (Netflix, Disney+ in the browser) may block Miracast image output due to HDCP copyright protection. In this case, a black screen on the TV is not an error, but a characteristic of the DRM protection.
Troubleshooting and Common Errors
Despite the standardization of technologies, users often encounter situations where devices cannot see each other or video lags. The first and most common cause is different subnets. Make sure the IP addresses of your computer and TV start with the same IP address (e.g., 192.168.1.X). If you have two routers or a range extender, they should operate in access point (AP) mode, rather than creating a new subnet.
The second important aspect is antivirus and firewall protection. Third-party antivirus programs (Kaspersky, ESET, Avast) often have their own firewall that blocks incoming connections by default. You should add the media server or Windows service to the exceptions.
If video playback is choppy, try lowering the stream quality in the server settings or switching to a wired connection on your PC. Closing background programs that consume bandwidth (torrents, Steam downloads) also helps.
⚠️ Please note: TV interfaces and operating system versions are constantly updated. Menu locations and item names may differ from those described in the instructions. Always consult the official user manual for your specific model.
The TV sees folders but doesn't open videos.
The problem is most likely with the codec. The TV's built-in player doesn't support the compression format. Solution: Install the VLC for Android app on your TV (if your OS allows it) or use a media server (Plex/UMS) with transcoding enabled.
Frequently Asked Questions (FAQ)
Is it possible to stream video if the computer is turned off?
No, your computer must be turned on and connected to the network for a DLNA or Plex server to work. However, you can set up sleep mode with wake-on-LAN (Wake-on-LAN) if your motherboard and router support it, but playback itself requires the OS to be running.
Why is there no sound when playing via DLNA?
Most often, this is due to the TV not supporting the audio codec used in the file (such as DTS or Dolby TrueHD). In this case, the only solution is transcoding via Plex or using external speakers connected to the PC.
Does this work over the internet if I'm in another city?
Standard DLNA only works within a local network. Accessing from outside requires setting up remote access in Plex (Plex Pass) or a complex VPN server setup on the router, which requires advanced knowledge.
What video format is best for Smart TV?
The most versatile container is MP4 or MKV with video codec H.264 (AVC) and audio track AACThese formats are supported by 99% of TVs without the need for transcoding.