Modern multimedia capabilities of personal computers and mobile devices often surpass the built-in features of Smart TVs, especially when it comes to playing rare video file formats or codecs. KMPlayer has established itself as one of the most versatile players, capable of handling virtually any container without the need for additional libraries. However, smartphone and laptop screens don't always allow for full picture quality, so it's natural to want to stream content to a larger screen.
There are several proven methods for wireless video streaming, each with its own technical features and hardware requirements. In this article, we'll examine these methods in detail. DLNA, Miracast and using third-party repeater apps to integrate the player with your TV. You'll learn how to set up folder sharing in Windows, which network settings are critical for a stable picture, and how to avoid audio desync.
Before you begin setting up, you need to make sure that both devices – whether it’s a Windows laptop, Android smartphone, or tablet – are connected to the same local network. Wi-FiThis is a fundamental requirement, without which any further manipulations will be ineffective. Your router's bandwidth also plays a role: for 4K video transmission, the 5 GHz band is recommended.
How wireless broadcasting works
Technically, the image display process can be implemented in two main ways: file streaming or screen mirroring. In the former case, the TV decodes the video stream itself, receiving data via a protocol. DLNA or UPnP. KMPlayer In conjunction with the operating system, it acts as a server delivering the file, while the TV acts as a renderer. This method is the least demanding on the transmitting device's resources, since the laptop or phone doesn't encode the image in real time.
The second method is known as Miracast Wi-Fi Direct, or Wi-Fi Direct, involves full mirroring of the video stream. Your device's graphics processor renders the image, compresses it, and sends the finished video stream to the TV. This places an additional load on the system, but allows the player's interface to be displayed, including menus and subtitles, which may not be supported by the TV's built-in decoder.
⚠️ Please note: When using the mirroring method (Miracast), image quality may be reduced due to video stream compression, and there may also be a delay between the action and the display on the screen.
The right method depends on your goals. If you simply want to watch a movie stored on your hard drive, DLNA is best. However, if you want to show presentations or display content from applications that don't support DLNA, screen mirroring is your only option. Understanding this difference will help you avoid unnecessary setup issues.
Network preparation and compatibility testing
Connection stability is a key factor in successful wireless media streaming. Even a powerful computer won't be able to transmit high-bitrate video if the Wi-Fi signal is unstable or the channel is congested by neighboring routers. Before beginning setup, it's recommended to run a connection speed test and ensure that devices can "see" each other on the local network.
In Windows, you need to check your network profile. If your network is marked as "Public," the system blocks other devices from discovering your device for security reasons. You need to change the status to "Private" to allow data exchange. You can do this through the Network and Sharing Center or the Wi-Fi settings in the system tray.
It's also worth paying attention to the Wi-Fi standard version. Older routers that only operate in the 2.4 GHz band may not be able to handle large video streams without buffering. If your router is dual-band, make sure both your TV and computer are connected to the network. 5 GHz.
Setting up DLNA using built-in Windows tools
The easiest way to play video from your computer on your TV without installing additional software is to use the built-in media streaming feature. KMPlayer here it acts only as a means for opening a file, and all the work of organizing the network is taken over by Windows Media Player or system services.
To activate this feature, open "Streaming Media Settings" in the Control Panel. In the window that opens, you'll see a list of available devices on the network. Find your TV model and click "Allow." The system will then create firewall rules to allow traffic to flow smoothly.
To play a file, simply right-click the video file in Windows Explorer, select "Cast to device," and select your TV. However, if you prefer to use the interface KMPlayer, you can do it another way: open the video in the player, click the "Send to device" button (if it is available in your version) or use the file's context menu.
☑️ Check DLNA settings
It's important to note that Windows' built-in tools don't support all subtitle formats. If external subtitles are critical to you, SRT or SUB The built-in DLNA server may ignore files. In this case, it's worth considering setting up a full-fledged media server, which we'll discuss below.
Using KMPlayer with a media server
For advanced users who want full control over the process and guaranteed support for all subtitle formats, the best solution is to install a separate DLNA server. Popular solutions such as Plex, Universal Media Server or Serviio can index a library of files and stream them to a TV using the engine KMPlayer for preview on PC.
The setup process is as follows: you install the server software and specify the folders where your movies are stored. The server scans the files, downloads metadata (cover art, descriptions), and becomes visible to the TV. You open the Media or DLNA app on the TV, find the server, and start playback.
The advantage of this approach is that the server can stream (transcode) video on the fly into a format the TV can understand even if it's not supported. This eliminates the issue of codec compatibility, as the computer's processor handles all the heavy lifting.
| Program | Difficulty of setup | Subtitle support | Transcoding |
|---|---|---|---|
| Windows Media | Low | Basic | Limited |
| Plex | Average | Full | Automatic |
| Universal Media Server | High | Full | Flexible |
| Serviio | Average | Full | Eat |
⚠️ Note: Server program interfaces may vary depending on the version. Always refer to the developer's official documentation for up-to-date screenshots and installation steps.
Miracast streaming and screen projection
If your goal is to show the entire contents of your computer screen, including the desktop and interface KMPlayer, then technology Miracast will be the perfect solution. In Windows 10 and 11, this feature is built-in and can be accessed with a keyboard shortcut. Win + KIn the "Connection" side menu that opens, the system will begin searching for available wireless displays.
You also need to activate the signal reception on your TV. This is a function in the Samsung menu. Screen Mirroring, in LG - Miracast or "Connect to a mobile device," while Sony calls it screen mirroring. Once paired, the image from your computer monitor will appear on the TV.
Launching the video in KMPlayer, you can expand it to full screen, and the TV will function as a second monitor. This is convenient if you want to use your computer for other tasks while watching a movie on the big screen. However, keep in mind that in this mode, the laptop must remain on and active.
What to do if the TV is not located?
Make sure Wi-Fi Direct is enabled on your TV. Also, check your PC's wireless adapter drivers—they should support Miracast. In Device Manager, under the Wi-Fi adapter properties, on the "Advanced" tab, look for items related to Wi-Fi Direct or Wireless Display.
Solving buffering and quality issues
Even with proper settings, users may experience image stuttering or audio desynchronization. This is most often caused by low wireless data transfer speeds. Try lowering the video bitrate or selecting a lower-resolution file to test.
Another common issue is power saving. The operating system may try to put the network adapter to sleep to save power, which causes the connection to drop. Go to Device Manager, find your Wi-Fi adapter, open its properties, and under the "Power Management" tab, uncheck "Allow the computer to turn off this device."
If the problem persists, try changing the buffer settings in the KMPlayer. Click F2 To access the settings, go to the "Playback" section and increase the buffer size. This will allow the player to download more data in advance, smoothing out network speed fluctuations.
Alternative methods for mobile devices
Owners of smartphones based on Android can use the mobile version KMPlayer To output video to your TV. The app supports Cast, which allows you to send video files directly to compatible Smart TVs. To do this, simply click the Cast icon in the player interface and select the device.
You can also use remote control apps that turn your smartphone into a controller for KMPlayer on a PC, allowing you to control playback while lying on the couch. Such solutions often require installing a server component on the computer and a client component on the phone.
Don't forget about an HDMI cable as a backup. If your wireless network is congested or the connection quality is poor, a physical connection will ensure the best picture and sound quality without lag.
Why can't the TV see files from the computer?
Most often, the problem lies in the Windows Firewall settings or network profile. Make sure the network is marked as "Private" and the "Shared Folders" app or your media server is allowed in the firewall rules.
Is it possible to stream 4K video over Wi-Fi?
Yes, but this requires a Wi-Fi 5 (AC) or Wi-Fi 6 (AX) router and a 5 GHz connection. The 2.4 GHz band may not have enough bandwidth for high bitrates.
Does KMPlayer work directly on Smart TV?
There is no official native KMPlayer app for Tizen (Samsung) or webOS (LG). However, on Android TVs, you can install a mobile version of the player from the Google Play Store.