Stream images from your PC to your TV via Wi-Fi

Modern multimedia systems allow you to instantly share content between devices, eliminating the need for cumbersome HDMI cables. Sharing images from a computer to a large TV screen is one of the most popular features for watching movies, photos, or showing presentations in the office. Wireless connectivity opens up new possibilities for home theater, making content enjoyment as convenient and free from unnecessary cables as possible.

There are several proven technologies that ensure stable high-definition video streaming. The specific method you choose depends on the operating system of your laptop or desktop computer, as well as the brand and year of manufacture of your device. Smart TVIn this article, we'll cover all the current methods in detail, from built-in Windows features to specialized applications, so you can choose the best option for your situation.

For successful synchronization, it's crucial that both devices are on the same local network. If your router broadcasts on both 2.4 GHz and 5 GHz frequencies, make sure both your computer and TV are connected to the same frequency, as this can significantly impact bandwidth. Miracast and Wi-Fi Direct protocols work directly between devices, bypassing the router, but for DLNA and streaming via apps, a router is required.

Using built-in features in Windows 10 and 11

Microsoft operating systems have powerful built-in tools for wireless display. Technology Miracast Allows you to stream your laptop screen to your TV in real time with minimal latency. This method is ideal for those who don't want to install additional software and prefer the built-in system tools. Most modern Samsung, LG, Philips, and Sony TVs support this standard out of the box.

To start casting, make sure your TV's signal reception feature is activated. Depending on the model, it may be called something different: "Screen Share" on LG, "Smart View" on Samsung, or simply "Cast" in the signal sources menu. After activating standby mode on your TV, go to your computer's settings. Press the key combination Win + K on your keyboard, which brings up the Connection sidebar on the right side of the screen.

The system will begin searching for available devices within Wi-Fi range. Once your TV's name appears in the list, click it. A connection confirmation prompt may appear on the TV screen, which you'll need to accept with the remote. After this, your Windows desktop will be fully replicated to the large screen. You can extend the screen, duplicate it, or use it as a second monitor using the menu. Settings → System → Display.

• 📺 The technology works without a router, using Wi-Fi Direct for a direct connection.
• 🖥️ Audio transmission is supported simultaneously with the video stream.
• ⚡ The latency is minimal, which allows you to play even less dynamic games.
• 🔄 Image quality automatically adapts to the channel speed.

⚠️ Attention: If your computer is connected to the network via Ethernet and your TV via Wi-Fi, they may be on different subnets, making device discovery impossible. For Miracast and DLNA to work properly, both devices must be on the same network segment.

Sometimes users encounter a problem with the "Connect" button being inactive or the system reporting that the device doesn't support the standard. This is often related to the wireless adapter drivers. Make sure you have the latest drivers installed for your Wi-Fi module, preferably downloaded from the laptop manufacturer's website rather than those installed automatically by Windows Update.

Broadcast via browser and DLNA servers

If your goal is not to duplicate your desktop, but to play a video file, photo or music track stored on your hard drive, it is better to use the technology DLNAIt allows the TV to view shared computer folders as network storage. Unlike Miracast, it doesn't transmit the entire screen's video stream; the TV decodes the media file itself, reducing the load on the PC's processor.

The easiest way to start a DLNA server in Windows is to use the built-in "Media Streaming" feature. Open "Settings," go to "Apps," and find "Play media from other devices" or search for "Streaming." In the window that opens, press the power button and select your TV from the list of available devices, allowing it to access the content.

After setting up the TV in the signal sources menu (button Input or Source) A new item will appear, such as "PC" or your computer's name. Once you open it, you'll see the folder structure. However, the standard Windows interface isn't always convenient for navigation using the remote control. For more flexible control, we recommend using specialized software that creates a convenient library with covers and descriptions.

A popular free program for organizing a media library is Universal Media Server or ServiioThey automatically scan your computer, find movie metadata (posters, actors, release year), and create a beautiful showcase on your TV screen. This turns an ordinary PC into a fully-fledged media center.

DLNA playback quality depends on the file format. TVs natively support H.264, MPEG-2, MP3, and AAC codecs. If you try to play a file in a format the TV doesn't understand (for example, a rare audio codec or the modern AV1 on an older model), playback won't start. In this case, on-the-fly transcoding, which is available on advanced servers, can help, but it requires a powerful processor.

Apps from TV manufacturers

Major electronics manufacturers develop their own ecosystems, which are often more stable and feature-rich than universal protocols. Using proprietary software is a guaranteed way to access all the features of your TV model, including cursor control, 3D content streaming, and image adjustments.

For equipment owners Samsung intended application Smart View (formerly Samsung PC Share Manager). It allows you to not only display images but also control your TV from your computer keyboard. Users LG It's worth paying attention to the program LG TV Plus, which also has extensive synchronization functionality. Sony offers a solution Video & TV SideView, although for simple screen sharing, built-in tools are often sufficient.

The connection process in such programs is usually standardized. After installing the utility on the PC, it scans the network and finds the TV. Pairing may require entering a PIN code displayed on the TV screen or confirming the connection by pressing a button on the remote. The advantage of such solutions is optimization: developers take into account the specifics of their hardware, minimizing latency and compression artifacts.

If you have an older TV, the new version of the program may not recognize it. In this case, it might be worth looking for an archived version of the software on the manufacturer's official website in the support section.

Broadcast for Apple owners (AirPlay)

Computer users Mac and laptops with Apple Silicon processors are in a winning position thanks to the technology AirPlay 2This system ensures the highest quality image and sound transmission with minimal latency. Many modern TVs (Samsung, Sony, LG, Vizio) already have built-in AirPlay support, eliminating the need for an Apple TV set-top box.

To connect your Mac to your TV, simply click the "Screen Mirroring" icon in the menu bar (the two rectangles) and select your TV from the list. The system will prompt you to enter a code that will appear on the TV screen, after which the image from your MacBook or iMac will appear in full resolution. If your TV is older and doesn't support AirPlay natively, you can use third-party receivers installed on Android TV, such as AirScreen.

Windows devices can also support AirPlay reception, although this requires installing additional software that emulates an Apple receiver. Programs such as LonelyScreen or AirServer They turn the PC into a broadcast target, but in our case, we need the opposite—to output from the PC to the TV. Therefore, for Windows, this section is only relevant if you want to understand the principle, but for direct broadcasting from a Windows PC, it's better to use Miracast.

AirPlay's image quality often surpasses other streaming options thanks to the efficient H.264 codec and adaptive bitrate. However, it's important to note that 4K video transmission requires a very stable connection. If your router is old or located far away, the system may automatically downgrade to 1080p to avoid stuttering.

Third-party remote access and streaming software

When standard tools fail or specific functionality is required, universal solutions come to the rescue. Programs like TeamViewer, AnyDesk or RustDesk Allows you to view your computer screen on your TV if the TV has the appropriate version of the app installed (usually Android TV). This is more of a solution for technical support than for watching movies, as it places a high load on the network.

A more specialized tool is LetsView or AirDroid CastThese apps are designed specifically for wireless screen mirroring. They work through a browser or an installed app, use a QR code for quick pairing, and often support audio, which is essential for watching videos.

The process is simple: launch the program on your PC, and it generates a QR code or digital PIN. Open the app on your TV (or scan the code with your phone's camera if it's a mobile app), enter your data, and enjoy the results. The main advantage is its cross-platform compatibility. You can display your Linux, Windows, or macOS content on any Android Smart TV.

However, free versions of such programs often have limitations, such as on-screen watermarks, session time limits, or ads. For regular use as an HDMI cable replacement, it's worth considering paid versions or open-source alternatives that don't have these limitations.

⚠️ Attention: When using free third-party streaming programs, carefully read the license terms. Some may collect data about the content you view or use part of your internet bandwidth for their own purposes (P2P networks).

Troubleshooting and Frequently Asked Questions

Despite the simplicity of the technology, users often encounter common problems: audio and video desynchronization, low resolution, or intermittent connection drops. Most often, the root cause is a congested Wi-Fi network. If there are many neighboring networks nearby, the signal can become swamped. The solution is to switch the router to a less congested channel or switch to the 5 GHz band.

Another common mistake is using a guest Wi-Fi network. Guest networks, by definition, isolate devices from each other for security reasons. If your phone sees the router but not the TV for streaming, check if you're connected to a guest SSID. Windows Defender Firewall may also be blocking incoming connections for streaming apps.

If you can see the picture but not the sound, check your default playback device. Click the speaker in the Windows system tray and select your TV instead of your laptop speakers. In some cases, you may need to restart the Windows Audio service or simply reconnect the device through the Connection menu.

Why is the broadcast delayed and choppy?

Lag is inevitable with wireless transmission, as the video stream must be compressed, transmitted over the air, decompressed, and rendered. This takes time (usually 1-3 seconds). Jitters indicate insufficient bandwidth. Try lowering the resolution in the streaming settings or moving the router closer to the TV.

Is it possible to display an image if there is no Smart TV?

Yes, there are special adapters for this, such as Google Chromecast, Apple TV, or Mi TV Stick. They plug into the HDMI port of a regular TV, giving it Smart TV features and the ability to stream images over Wi-Fi. There are also HDMI dongles that support Miracast.

Does broadcasting affect internet speed?

When using Miracast and Wi-Fi Direct, the internet is not used at all; traffic flows within the local network. However, when streaming online video (for example, YouTube from a browser tab) or using cloud services, the internet channel will be used, and speeds may drop for other devices.

How to improve picture quality during broadcasting?

Use a router that supports 802.11ac (Wi-Fi 5) or ax (Wi-Fi 6). Make sure both devices are operating in the 5 GHz band. Close any background programs on your PC that are consuming bandwidth. In your graphics card settings (NVIDIA Control Panel or AMD Radeon Settings), you can try disabling vertical sync for the desktop, which can sometimes help reduce input lag.