Modern home entertainment systems make it easy to transform an ordinary living room into a true cinema. It's common to download a movie to your computer's hard drive but want to watch it on a big-screen TV. Wired connections, such as HDMI, require running cables across the room, which isn't always convenient or aesthetically pleasing. Wireless technologies solve this problem by allowing high-definition content to be streamed over a local network.
Using a bunch PC - router - Android set-top box is one of the most popular solutions. This method doesn't require purchasing additional expensive equipment if you already have a smart TV set-top box or a modern Android-enabled Smart TV. The main advantage is freedom of movement: you can control playback from the couch, while lying with your laptop, or simply from across the room.
In this article, we'll take a detailed look at all available video streaming methods. We'll cover built-in operating system features, specialized streaming software, and local network settings for maximum speed. You'll learn how to avoid lag and audio desync, as well as how to set up automatic device connections.
To get started, you'll need to make sure all devices are on the same network. Wi-Fi router acts as a central hub, distributing traffic between the computer and TV. Connection quality directly impacts the bitrate of the streamed video, so for watching 4K movies, it's recommended to use the standard 802.11ac or Wi-Fi 6.
Network and hardware requirements for stable streaming
Before you begin configuring the software, you need to evaluate the technical capabilities of your equipment. The local network speed must be at least 30 Mbps for comfortable viewing of Full HD content without buffering.If your router is old and only supports the 2.4 GHz standard, you may experience some lag when transmitting high-definition video.
The computer and Android set-top box must be connected to the same subnet. Users often encounter an issue where the devices "don't see" each other. This happens if one of them is connected to a guest network or via a VLAN that isolates traffic. Make sure AP client isolation is disabled in your router settings, if enabled.
- 📶 Dual-band router: Using the 5 GHz frequency significantly reduces interference and increases channel capacity compared to 2.4 GHz.
- 💻 PC power: To transcode video on the fly, your computer's processor needs sufficient performance, especially for 4K HDR formats.
- 📺 Android TV Box: The set-top box must be Google certified or support the necessary codecs for hardware decoding of the transmitted signal.
It's important to consider the distance between the router and the signal receiver. Walls and metal structures can significantly weaken the signal. If the set-top box is located far from the router, it makes sense to use a Wi-Fi repeater or run an Ethernet cable directly to the TV box for maximum stability.
⚠️ Note: If you are using a Mesh system, make sure that the client roaming function is configured correctly, otherwise the connection between the PC and TV may be interrupted when switching between nodes.
Broadcasting method using the built-in "Media Cast" function in Windows
Windows 10 and 11 operating systems have a built-in DLNA mechanism that allows you to stream content without installing third-party software. This method is ideal for quickly sharing photos or short videos. To activate this feature, open "Settings" and go to "Apps," then select "Media apps" or "Media streaming settings."
Once enabled, your computer will become visible to other devices on the network. On your Android set-top box, you'll need to open a video player that supports local network access, such as VLC for Android or the built-in File Explorer. You'll see your computer's name in the list of available sources.
When selecting a file to play, Windows may ask for permission to connect. This is a standard security procedure. If you plan to use this feature regularly, check the "Allowed" box to avoid having to confirm each action. However, keep in mind that this method doesn't support DVD menus, complex subtitles, and may struggle with large MKV files.
Streaming quality via standard Windows DLNA is often limited by the OS's software codecs. If video playback is choppy, try lowering the quality in the streaming settings or use another method described below.
Using Plex Media Server to Organize Your Home Library
For those who want to create a full-fledged media center with beautiful posters, descriptions, and trailers, the best solution would be to install a server Plex Media ServerThis software scans your movie folders, automatically downloads metadata from the internet, and creates a convenient library.
Installing the server on your computer is simple: download the installer from the official website, run it, and specify the folders you want to index. Plex runs in the background and is available even when the program window is closed. On your Android device, install the Plex client app, which connects to your account.
Plex's main advantage is its transcoding capability. If your TV or set-top box doesn't support a certain audio codec or video format, the server on your PC transcodes the stream on the fly into a compatible format. This requires CPU resources, but guarantees playback of any file.
Do I need a paid Plex Pass subscription?
Basic features are free. A paid subscription is required for offline downloading to mobile devices, HDR toning support, and advanced metadata. This is sufficient for local viewing at home.
| Function | Free version | Plex Pass |
|---|---|---|
| Local streaming | Yes | Yes |
| Transcoding | Yes | Yes |
| HDR Toning | No | Yes |
| Offline download | No | Yes |
Setting up the server takes about 10-15 minutes, but the results are worth it. You get a Netflix-like interface for your personal files. The app is available on virtually all platforms, allowing you to start watching on your PC and continue on your TV.
Screencasting (Miracast) and desktop extension
If your goal is not just to play a video file, but to show the entire contents of your computer screen (for example, a presentation or a website), use the technology MiracastIn Windows 10/11, this feature is called "Projection." It allows you to mirror your screen or extend it onto a TV wirelessly.
To connect, press the key combination Win + K on the keyboard. The "Connection" panel will appear on the right side of the screen. If your Android device supports signal reception (often called "Wireless Monitor" or "Screen Mirroring"), it will appear in the list.
On some boxes, such as those based on Amlogic or Rockchip chips, you may need to install a receiver app, such as AirScreen or Receiver for AirPlay & CastAfter launching the app on the TV, the computer will see it as a wireless display. This method has higher latency than DLNA, so it's less suitable for gaming, but it's quite suitable for video.
☑️ Check before connecting Miracast
It's worth noting that Miracast image quality depends on the Wi-Fi network congestion. If files are actively downloading, the image may appear distorted or blocky. This is ideal for viewing static content or slideshows.
Third-party controller apps and video players
An alternative to system tools are specialized applications that provide more control over the playback process. One of the most popular solutions is a pair LocalCast or BubbleUPnPThese apps allow you to open video files directly from your PC browser or File Explorer and send them to your TV.
Another powerful tool is the protocol SMBYou can share a folder containing movies on your computer by granting network access. Then, in any advanced Android player (MX Player, VLC, Nova Player), add the network storage by entering the computer's IP address and Windows user credentials.
This method is advantageous because it plays directly from the PC's hard drive, bypassing the operating system's encoding. The TV player decodes the video itself, using the set-top box's processing power. This reduces the load on the PC's processor and often results in a better picture.
⚠️ Important: When using SMB, make sure that the "Private network" profile is selected in the "Network" section of Windows settings, otherwise access to shared folders may be blocked by the firewall.
To control playback from your phone or tablet, you can use remote apps that sync with the player on your TV. This is especially convenient when you need to quickly pause, change the volume, or select a different track without leaving the couch.
Solution: Delays, desync, and poor quality
Even with proper settings, technical issues can arise. The most common is audio and video desynchronization. If the audio is ahead of the picture or behind, check the audio delay settings in the player on your Android device. There's usually a slider there to adjust the delay.
The second common problem is image stuttering. This almost always indicates insufficient bandwidth. Try switching your router to a less congested channel or moving the receiver closer to the signal source. It's also worth checking if you're running a background Windows update or downloading torrents on your PC.
- 🔄 Reboot: A simple but effective solution is to reboot the router and set-top box. This will clear the buffers and clear any network protocol errors.
- 📉 Quality reduction: If 4K video is lagging, try streaming the 1080p version or use a transcoding server (like Plex) that adapts the stream.
- 🔌 Cable connection: For stationary set-top boxes, a LAN cable connection is always preferred over Wi-Fi, as it guarantees stable speed.
If all else fails, check the driver version of your Wi-Fi adapter on your computer. Outdated software may not work correctly with new encryption standards or media transfer protocols.
Is it possible to stream audio from a PC to TV speakers?
Yes, this is possible. When using Miracast, audio is transmitted automatically. When using DLNA or SMB, audio also goes through the TV. If you're using the Chrome browser for a tab, you can select "Cast Desktop" or "Cast Tab" in the "Cast" menu, and the audio will go to the TV.
Why can't the TV see the computer on the network?
Most likely, your Windows network profile is set to "Public." Switch it to "Private." Also, check if "Network discovery" is enabled in the sharing settings. An antivirus or firewall could also be blocking the connection.
Does my set-top box support 5GHz?
Check the model's specifications on the manufacturer's website or in the "About Device" menu. If 802.11ac or ax is listed, it supports 5 GHz. If it only supports 802.11n, it most likely only supports 2.4 GHz.
Does the Internet affect the speed of file transfer over a local network?
No, it doesn't. Data transfer between your PC and TV occurs within your local network via your router, not through the global network. The speed depends only on the speed of your router and the adapters on your devices.