Modern Smart TVs have become powerful multimedia centers, but built-in browsers on TVs are often slow, don't support the necessary codecs, or don't have the necessary extensions to block ads.
In such situations, the most rational solution is to use a browser on a computer or laptop and then broadcast the image to a large screen.
This method allows you to enjoy high-definition content using your PC's processing power and a stable connection, while avoiding the lag of the TV's interface itself.
Wireless video streaming technologies
Before you begin setting up, it's important to understand that there are several fundamentally different ways to transmit images, each with its own limitations and advantages.
The first method is known as DLNA, does not broadcast the image from the screen in real time, but sends a file or link to a media file directly to the TV for playback.
The second way, Miracast or Wi-Fi Direct, creates a direct connection between devices, duplicating the video signal without delay, which is ideal for demonstrating presentations or web pages.
The third option is to use a protocol Chromecast built-in, which allows the Chrome browser to send a tab or the entire desktop to a compatible receiver.
The specific method you choose depends on the hardware support of your TV and the version of the operating system installed in the browser.
Modern standards such as HDMI 2.1, imply high data transfer rates, but when broadcasting wirelessly via Wi-Fi, the router's bandwidth becomes a critical factor.
⚠️ Please note: If your router only operates in the 2.4 GHz band, the quality of 4K video streaming may be unstable due to a narrow data transmission channel.
To ensure the best image quality, it is recommended to use dual-band routers that support the standard. 802.11ac or newer.
Preparing your home network and equipment
Successful broadcasting of high-definition video is only possible if a number of technical requirements for the local network are met.
Both devices—the computer and the TV—must be connected to the same subnet, ideally to the same router.
Using guest Wi-Fi networks or Client Isolation on the router side can completely block devices from discovering each other.
☑️ Network readiness check
Make sure your router does not have the frequency splitting feature enabled, which can create virtual networks with the same name but different communication channels.
In some cases, manually setting static IP addresses for the TV and computer can help to avoid addressing conflicts during long-term network operation.
It's also worth making sure that your antivirus software or Windows' built-in firewall isn't marking your home network as public.
Switching the network profile to "Private" or "Home" opens the necessary ports for device discovery protocols.
Connection stability directly affects the absence of jerks and buffering while watching.
Streaming via Google Chrome and Chromecast
The most popular and universal way is to use the built-in broadcast function in the browser Google Chrome.
This method works not only with TVs that have a built-in module Chromecast, but also with devices that support the Google Cast protocol.
To get started, open your browser, click on the three dots in the upper right corner and select Save and share, and then Broadcast.
In the menu that opens, you will see a list of available devices on your network.
It's important to choose the right broadcast source: you can send only the current tab, the entire desktop, or a specific file.
When selecting the "Stream Desktop" option, make sure that the quality settings are set to the maximum resolution, if your router allows it.
Why does video lag when streaming through Chrome?
Hardware acceleration is often the cause. Try going to Chrome settings at chrome://settings/system and disabling (or enabling) the "Use hardware acceleration" option. This can dramatically impact video decoding performance before sending it to the TV.
If your TV doesn't appear in the list, check if your firewall is blocking the process. googlechromesandbox.exe.
Also, make sure that browser extensions, especially ad blockers or VPNs, do not interfere with local device searches.
Using Miracast and Wi-Fi Direct technology
Technology Miracast Allows you to stream images without a router by creating a direct connection between your computer's video card and your TV's Wi-Fi module.
In Windows 10 and 11 operating systems, this function is implemented natively and does not require the installation of additional software.
To launch, press the key combination Win + Kto open the Wireless Display Connection panel.
The system will begin searching for available devices that support the Wi-Fi Direct standard.
You may need to manually launch a "Screen Share", "MirrorShare" or similar app on your TV to make it visible for searching.
Unlike Chromecast, Miracast transmits a video stream, so the image quality will depend on the power of the Wi-Fi adapter in your laptop.
| Parameter | Chromecast | Miracast | DLNA |
|---|---|---|---|
| Router dependency | High | Low (direct connection) | High |
| Latency | Average | Low | Missing (file) |
| Picture quality | Up to 4K HDR | Depends on the signal | Original |
| Control | From a PC or phone | Only from PC | TV remote control |
When using Miracast, your laptop may run slower because the graphics card is busy encoding the stream.
Close heavy applications on your computer to ensure smooth playback on the big screen.
Setting up a DLNA server for local files
If your goal is to play a downloaded movie or video archive stored on your hard drive, using DLNA will be the most energy-efficient solution.
In this case, the computer acts as a media server, and the TV simply decodes the video stream without loading the PC processor.
In Windows 10 and 11, the media server feature is built in by default and is activated through "Streaming media settings".
You need to select the folders that will be available for network playback and add them to the library.
On the TV, you should launch the "Media Player", "Home Network" or similar application, where your computer will appear in the list of sources.
Navigation is carried out using the TV remote control, which is convenient for viewing photo galleries or long video files.
Some video formats such as MKV with certain audio codecs may not play directly via DLNA.
In such cases, the browser may not see the file, and the use of third-party server software will be required, for example, Plex or Jellyfin.
These programs automatically transcode video on the fly, adapting the format to the capabilities of the TV.
Solving common problems and delays
The most common problem with wireless streaming is audio and video desynchronization or intermittent freezing.
If the video is lagging, first check the Wi-Fi channel usage by other devices, such as smartphones or smart home systems.
Switching to a channel with less load in the router settings can significantly improve the situation.
⚠️ Note: Router interfaces and frequency channel settings may vary depending on the model and firmware version. Before changing Wi-Fi settings, consult your equipment manufacturer's instructions.
Another reason could be an outdated Wi-Fi adapter driver on your computer.
Go to Device Manager, find your network adapter, and check for updates through the manufacturer's website, not through the standard Windows manager.
You can also try disabling power saving for USB ports and the network adapter in the Windows power plan.
The system may turn off power to the adapter during periods of inactivity, resulting in a disconnected connection when the broadcast starts.
To ensure stable operation in the background, the adapter must operate at maximum performance.
Alternative software solutions
When standard operating system tools fail, specialized snails come to the rescue.
Application AirServer or Reflector allows you to turn your computer into an AirPlay receiver if you want to stream from Apple devices, but it also works the other way if set up correctly.
For Apple ecosystem users, the native AirPlay 2 feature on modern Samsung, LG, and Sony TVs is the preferred option.
Simply click the cast icon in Safari or QuickTime player and select your TV.
There are also browser plugins such as Web Video Caster, which can "pull" a video stream from a page and send it directly to a TV, bypassing the browser rendering of the page.
This reduces the load on the processor and allows you to watch videos from sites that block regular screen sharing.
Use these tools with caution, downloading extensions only from official stores.
Why doesn't the TV see the computer in the list of devices?
Most often, the issue lies with network profiles (public instead of private) or detection services being blocked by your antivirus software. Also, check if the SSDP Discovery service is enabled in Windows.
Is it possible to stream 4K video over Wi-Fi?
Yes, this is possible, but it requires a Wi-Fi 5 (AC) or Wi-Fi 6 (AX) router and both devices connected to the 5 GHz band. 4K HDR requires high bandwidth.
How to reduce audio latency during broadcasting?
In Windows sound settings, try changing the default format to a lower sampling rate or using an external sound card that supports latency. Some players have a setting for audio latency compensation.
Is it safe to stream personal photos on public Wi-Fi?
No, traffic on public networks can be intercepted. Use only trusted home networks or a personal hotspot with a password to transmit confidential data.