It is difficult to imagine modern screening without watching video content on a large screen, and a situation often arises when it is more convenient to find an interesting video on personal computer, but you want to watch it on your TV. Wireless data transmission technologies allow you to do this without unnecessary wires, using only your home network. Wi-FiThis eliminates the need to drag long HDMI cables or carry a laptop to the couch, ensuring a comfortable viewing experience.
There are several proven methods image broadcasts, each with its own characteristics and hardware requirements. We'll explore the most relevant methods, including built-in browser features, protocols, and more. DLNA and native operating system applications. The correct method depends on your TV model and the version of the operating system installed on your computer.
Before you begin setup, make sure both devices, your computer and your TV, are connected to the same wireless networkThis is a critical requirement for most media transfer protocols to work, as devices must be able to "see" each other on the local network. If your router broadcasts the network on 2.4 GHz and 5 GHz frequencies with different names, make sure the devices are on the same segment.
Using the built-in casting feature in the Google Chrome browser
The easiest and most popular way to display videos is to use a browser. Google Chrome, which is installed on most computers. It has a built-in function Cast, which allows you to transfer the contents of a tab or the entire screen to compatible devices. This method requires no additional software and is stable.
To start playing, open the desired video on YouTube in your browser. In the upper right corner of the interface, click the three vertical dots to open the settings menu and select Broadcast... (or Cast). The browser will start searching for available devices on the network.
⚠️ Important: If your TV doesn't appear in the list of available devices, check your Windows Firewall settings. Antivirus programs often block incoming connections to your local network, considering them potentially dangerous.
After selecting your TV from the list, the video from the browser tab will begin playing on the big screen. Image quality will depend on the speed. Wi-Fi connections and channel load. If you notice audio and video out of sync, try reducing the video quality in your YouTube player settings to 720p or 1080p.
It's important to note that while streaming a browser tab, your computer continues to process the video stream, which can put a strain on your system. If you minimize your browser or switch to another tab, the video will continue to play on your TV, but processor resources will be consumed. This is something to keep in mind for owners of older or weaker laptops.
Casting via the Projection menu in Windows 10 and 11
Windows operating systems offer a native tool for extending the desktop or mirroring the screen to wireless displays. This feature is based on the standard Miracast, which is supported by most modern Smart TVs. This method allows you to display not only videos but also any other windows, games, or presentations on your TV.
To activate the connection, press the key combination Win + K on the keyboard. The "Connection" panel will open on the right, where the system will begin searching for available wireless displays. Select your TV from the list. A connection confirmation prompt may appear on the TV screen, which you'll need to confirm with the remote.
☑️ Check before connecting Miracast
After successful connection, the computer screen is completely will be projected On your TV. You can minimize your browser and do other things while the video plays in the background. However, keep in mind that the screen resolution may automatically change, resulting in blurry fonts or misaligned windows.
To control the display mode, use the combination Win + PHere you can select "Second Screen Only" to turn off the laptop monitor and save power, or "Repeat" to see the image on both devices. Transmission stability depends on signal strength. router and the distance to it.
Setting up a DLNA server to stream media files
Protocol DLNA (Digital Living Network Alliance) allows you to stream media files between devices on the same network without the need for screen mirroring. Unlike casting a tab, the TV decodes the video file itself, accessing it from the computer as if it were network storage. This reduces the load on the PC and often results in smoother playback.
In Windows, this feature is implemented through "Media Streaming Settings." Open Control Panel, find the "Multimedia" section, and enable streaming. Your computer will then be visible to your TV as a content source. You'll need to select the folders that will be available for viewing.
| Parameter | Description | Recommended value |
|---|---|---|
| Protocol | Data transfer method | DLNA / UPnP |
| Video codec | Compression format | H.264, MP4, MKV |
| Network speed | Bandwidth | Not less than 20 Mbps |
| Permission | Picture quality | Up to 4K (depending on TV) |
Playing YouTube videos directly via DLNA isn't possible, as it's a streaming service and not a local file. However, this method is ideal for viewing. downloaded movies or TV series stored on your computer's hard drive. The TV will find the PC in the list of signal sources (usually under "Media" or "Devices").
Why can't the TV see the computer via DLNA?
Often, the problem lies in the Windows network profile. If the network is marked as "Public," the system blocks device discovery. Switch the profile to "Private" in Network & Internet settings.
Using Chromecast built-in technology
Many modern TVs have built-in support for this technology. Google ChromecastThis allows you to stream content directly from the YouTube app on your phone or your computer browser, bypassing complex system settings. In this case, the video is downloaded directly by the TV, freeing up computer resources.
In the YouTube interface on your computer, find the casting icon (the rectangle with waves in the corner). If your TV supports Chromecast, it will appear in the list. Click it, and the video will start playing on the big screen. In this case, your computer only acts as a remote control.
The advantage of this method is the ability to control playback from other devices. You can start a video on your TV from your PC, and then pause it or change the volume via smartphone. The streaming quality is the highest possible for your internet channel.
⚠️ Note: When using Chromecast, your TV uses bandwidth directly. Make sure your provider's plan allows for large data usage, especially when watching in 4K.
Troubleshooting connection and buffering issues
Even with proper setup, users may encounter issues: video stutters, audio drops out, or the device can't be found. Most often, the cause is an unstable signal. Wi-FiTry placing the router closer to the TV or use a wired connection for stationary devices, if possible.
If the image is choppy, try rebooting the router and both devices. Sometimes, disabling other devices that are actively downloading files or playing online games, which is putting a strain on the bandwidth, can help. Also, check if your router has any speed limits set for specific devices.
In some cases, updating the graphics card drivers on your computer or updating the TV's firmware can resolve the issue. Manufacturers regularly release patches that improve compatibility with streaming protocols. Go to your TV's settings and check for software updates.
Comparison of methods for displaying images on TV
The best method depends on your goals. If you just need to show a presentation or photos, this will do. Miracast. Ideal for watching movies from your hard drive. DLNA. And for YouTube and online cinemas, it is best to use the built-in Chromecast or the broadcast function in the browser.
Each method has its own pros and cons in terms of image quality, latency, and ease of use. Below is a comparison table to help you make your choice.
| Method | Quality | PC load | Convenience |
|---|---|---|---|
| Chrome Cast | High | Low | High |
| Miracast | Average | Average | Average |
| DLNA | Maximum | Minimum | Low |
| HDMI cable | Maximum | Absent | Low |
Please remember that operating system and app interfaces are subject to update. Button locations and menu names may change over time. If you can't find the function described, search your device's settings or refer to the manufacturer's official documentation.
Why does the TV say "Failed to connect"?
Most often, this means the devices are on different subnets or one of them is using a guest Wi-Fi network. The issue could also be due to the outdated WEP security protocol on the router, which modern devices may ignore.
Is it possible to stream sound separately to speakers?
Yes, you can select an output device in the Windows sound settings. If your TV supports Bluetooth or has an audio output, you can connect external speakers, but when streaming video wirelessly, the sound is usually synced with the picture on the TV.
How to improve image quality when there are lags?
Manually lower the video resolution in YouTube settings. Automatic quality selection can be inconsistent on unstable Wi-Fi. Switching from 4K to 1080p often resolves the buffering issue.