A modern home theater can be easily assembled from existing equipment without purchasing expensive gear. All you need to know is How to play a movie from your computer on your TV via Wi-Fito enjoy content on a big screen. This eliminates the need to copy files to a flash drive or use long HDMI cables that often get tangled underfoot.
There are several proven methods for transmitting video signals, each with its own characteristics. You can use built-in features of the Windows or macOS operating system, dedicated remote control apps, or wireless mirroring technologies. The method you choose depends on the model of your TV. Smart TV and the version of the operating system on the computer.
In this guide, we'll cover all current connection options in detail, focusing on potential issues and solutions. Regardless of what TV you have, Samsung, LG or Sony, you will find a working method for your situation.
Preparing equipment and network for stable transmission
Before you begin setting up, you need to make sure both devices are on the same network. The computer and TV must be connected to the same Wi-Fi networkIf you have a dual-band router, it's recommended to use the 5 GHz band for transmitting heavy, high-definition video, as it provides greater throughput.
Check your operating system's sharing settings. In Windows, this often becomes a stumbling block when the system blocks the connection, considering the network public. You need to change the network profile to "Private" to allow devices to discover each other.
⚠️ Attention: Some routers have a "Client Isolation" feature. If it's enabled, devices on the network won't see each other, and you won't be able to play a movie. Check your router settings.
It's also worth updating your TV's software to the latest version. Manufacturers regularly release patches that improve protocol compatibility. DLNA And Miracast.
Using the built-in Connect to a Wireless Display feature in Windows
Windows 10 and 11 have built-in support for Miracast technology, allowing you to directly broadcast your screen. To launch, press the key combination Win + K on the keyboard. The system will begin searching for available wireless displays within range.
You may also need to activate the reception mode on your TV. In the menu Samsung This is often called "Screencasting" LG — "Screen Share", and in Sony — "Screen Mirroring." Once the TV appears in the list on your PC, click on it to pair it.
☑️ Check before connecting Miracast
This method is convenient because it broadcasts the entire desktop or a specific window. You can launch a browser with a movie and maximize it to full screen, and the audio will automatically switch to the TV speakers. However, keep in mind that under high processor load, there may be a slight cursor lag or audio desync.
Broadcasting via DLNA protocol and built-in media player
If you don't need to duplicate the entire screen, but just want to play a video file, the technology DLNA (Digital Living Network Alliance) is ideal. It allows you to stream media content in the background without cluttering your computer's graphical interface. In Windows 10 and 11, just right-click on the video file and select "Cast to device."
Select your TV from the list that appears. A connection request notification will appear on the TV screen, which you'll need to confirm with the remote. After that, playback will begin through the TV's built-in player, which is typically better at decoding heavy formats than a browser.
⚠️ Attention: Your TV's built-in player may not support certain audio codecs (for example, DTS or AC3 on some models). If the video plays but there's no sound, you'll need to use third-party software.
For more advanced control, you can use the built-in Windows Media Player app. Open the file in the player, go to the "Streaming" tab, and select the device. This will allow you to create playlists and manage the playback queue.
Third-party programs for advanced features: Plex and VLC
The standard OS tools are good, but often limited in functionality. VLC Media Player VLC is a powerful open-source tool that can stream video in virtually any format. In the "Playback" menu, select "Render," find your TV, and play the movie. VLC will automatically transcode the stream on the fly if the TV doesn't understand the original file format.
A more serious solution is to install a server Plex to your computer. This turns your PC into a fully-fledged media server with a beautiful interface, movie posters, and cast information. The Plex app (available in most Smart TV app stores) is installed on your TV and connects to the server.
Why is Plex better than DLNA?
Plex scans your media library, downloads cover art, descriptions, and sorts content by genre. Unlike simple DLNA, where you only see a list of files, Plex creates an interface similar to Netflix or Kinopoisk.
The advantage of using specialized software is its subtitle support and transcoding capabilities. If you're watching a movie with subtitles, Plex or VLC will allow you to turn them on or off, change the font size, which is often not possible through standard DLNA.
Stream video via Google Chrome and Chromecast
If the movie is on the Internet (online cinema, YouTube), the easiest way is to use a browser Google ChromeIn the upper right corner, click the three dots, select "Save and Share" → "Broadcast." This method works even if you don't have Chromecast, since many modern TVs have built-in support for this technology (Google Cast).
In the window that opens, you can choose what to stream: a browser tab, the entire desktop, or a local file. When you select a browser tab, the audio is streamed along with the video. This is a great way to watch content from sites that block direct downloads.
| Method | Quality | Delay | Complexity |
|---|---|---|---|
| Miracast (Windows) | High | Average | Low |
| DLNA (Player) | Maximum | Absent | Low |
| Plex Server | High | Absent | Average |
| Chrome Cast | Depends on the network | Low | Low |
It's important to note that streaming a browser tab places a strain on the computer's processor, as it must render the image and send it as a stream. Therefore, the laptop must be sufficiently powerful, otherwise freezing is possible.
Troubleshooting: If your TV doesn't see your computer
The most common cause of problems is Windows Firewall or antivirus software. They can block incoming connections to media servers. You need to add an exception to the firewall rules for "Private Networks." Restarting the service also helps. SSDP Discovery via command services.msc.
Another nuance is different Wi-Fi standards. If your router broadcasts the network simultaneously on 2.4 GHz and 5 GHz with different names (SSIDs), make sure both devices are connected to the same frequency. Sometimes older TVs don't see devices on the 5 GHz network due to driver limitations.
In some cases, resetting network settings helps. On your computer, open the command prompt as administrator and enter netsh winsock reset, then restart your PC. This will clear the network protocol cache.
Frequently Asked Questions (FAQ)
Is it possible to play a movie without the Internet, only over a local network?
Yes, you don't need the internet for this. Devices communicate directly through the router over the local network. The main thing is that the router is turned on and transmitting a signal, even if the ISP cable is disconnected.
Why does the picture jerk when viewing?
Most likely, your Wi-Fi channel isn't providing enough bandwidth. Try switching to the 5 GHz band or moving the router closer to the TV. Lowering the video quality in your player settings may also help.
Does this work with MacBook and Apple TV?
Yes, but the technology is called AirPlay. To connect your Mac to a TV that supports AirPlay 2 (many new Samsung, LG, and Sony models), use the "Screen Mirroring" button in macOS Control Center.
How to transmit sound to external speakers during broadcasting?
Audio is usually transmitted along with the video stream to the TV. If the TV doesn't have a speaker output, you can use a Bluetooth adapter connected to the TV or output audio through the mini-jack (if available) to external speakers.