How to Stream a Movie from Your Computer to Your TV via Wi-Fi: A Complete Guide

Streaming movies from your computer to a big-screen TV wirelessly is a convenient way to enjoy content without the hassle of cables. However, not everyone knows that picture quality and streaming stability depend not only on Wi-Fi speed but also on the chosen connection method. In this article, we'll explore 5 proven methods Video transfer from PC to TV, their pros and cons, as well as setup nuances for different operating systems.

The main problem that users face is audio delays (lip sync), slowdowns When playing 4K content, or there's no sound at all. These issues are solvable: simply select the correct transmission protocol and optimize your router settings. We tested all methods on TVs. Samsung QLED (2022), LG OLED C2 And Sony Bravia X90J with different PCs (Windows 11, macOS Ventura, Ubuntu 22.04) - the results are summarized in the comparison table below.

1. Miracast: Wireless HDMI for Windows

Technology Miracast It allows you to mirror your computer screen to your TV using the "what you see on your monitor" principle. It's similar to wired HDMI, but without the cables. The main requirement is that your TV must support Miracast (look for the options in the menu). Screen Mirroring, Wireless Display or Wi-Fi Direct).

On Windows 10/11, this feature is built into the system. To activate it:

1. Click Win + K (or open Settings → System → Display → Connect to a wireless display).
2. From the list of available devices, select your TV model (for example, Samsung 6 Series (XX-XX)).
3. Confirm the connection on TV (you may be asked to enter a PIN code).

Miracast transmits images with minimal delay (about 30-50 ms), which is critical for games or action-packed movies. However, there are some nuances:

• 🔹 Permission: maximum — 1920×1080 at 60 Hz (4K is rarely supported).
• 🔊 Sound: transmitted only via protocol LPAC or AAC (DTS and Dolby Digital do not work).
• 📶 Wi-Fi requirements: the router must support 802.11ac (Wi-Fi 5) or newer, 5 GHz channel.

⚠️ Attention: If the image is choppy after connecting, check the power saving settings of your Wi-Fi adapter in Device Manager. Disable the option "Allow the computer to turn off this device to save power".

2. DLNA/UPnP: Streaming without screen mirroring

Protocol DLNA (or its extension UPnP) allows broadcast a specific file (movies, music, photos) to your TV without displaying your computer desktop. This is convenient if you just want to play a movie and not mirror the entire screen.

To set this up you will need:

1. Enable DLNA server on PC:
   • Windows: Settings → Network & Internet → Sharing options → Media streaming.
   • macOS: Use VLC or Plex Media Server.

Open the app on your TV Media player, Smart Share (LG) or AllShare (Samsung) and select your computer from the list of devices.

Advantages of DLNA:

• 🎬 Support for most formats: .mkv, .mp4, .avi (but not .iso).
• 🔄 Ability to control playback using the TV remote control.
• 📡 Works even on older routers with Wi-Fi 4 (802.11n).

Flaws:

• ❌ No subtitle support in the format .srt (you'll have to embed them into the file).
• ⏳ Buffering when playing files with higher bitrates 20 Mbps.

Enable streaming in Windows settings

Add a movie folder to your DLNA library

Reboot your router to refresh the device list.

Check that the TV and PC are on the same network-->

3. Steam Link: For gamers and 4K enthusiasts

If you need to not only watch movies but also play games with broadcasting to the big screen, Steam Link — the perfect solution. The app uses its own video compression algorithms, allowing you to transmit 4K@60 FPS with minimal delay (only 10-20 ms).

Setup instructions:

1. Install Steam on PC and app Steam Link on TV (available in Google Play for Android TV or App Store for Apple TV).
2. Connect a gamepad (for example, Xbox Controller or DualSense) to the TV via Bluetooth.
3. In Steam settings on PC, activate Settings → Remote Play → Enable Remote Play.
4. Launch Steam Link on TV, select your PC and start broadcasting.

To play movies:

• Open the file in any player on your PC (for example, MPC-HC or VLC).
• IN Steam Link select an option "Transmit Desktop" (desktop transfer).

⚠️ Attention: Steam Link requires a powerful processor on your PC (from Intel Core i5 or Ryzen 5). On weak laptops, artifacts are possible when playing 4K HDR.

4. Plex/Emby: A Media Server for Collectors

If you have a large collection of movies, series and music, it is best to organize local media server by using Plex or EmbyThese programs not only broadcast content, but also:

• 📽 Download covers, descriptions, and subtitles automatically.
• 🔍 Supports searching by actors, genres, and years.
• 📱 Allows you to watch movies from your phone or tablet.

Setting up Plex:

1. Download Plex Media Server from the official website and install on your PC.
2. Add movie folders to the library (for example, Films, Series).
3. Install the application Plex on TV (available for Samsung Tizen, LG webOS, Android TV).
4. Log in to the same account on your PC and TV.

Peculiarities:

• ✅ Support Dolby Vision And DTS:X (subject to license).
• ⚙ On-the-fly transcoding (if your TV doesn't support the file format).
• 🌐 Access content from anywhere in the world (with remote access setup).

What is transcoding?

Transcoding is the on-the-fly conversion of video into a format supported by your TV. For example, if your TV doesn't play .mkv with codec HEVC, Plex will automatically convert it to .mp4 With AVCThis requires the power of the PC processor!

5. Smart View (Samsung) and similar products for other brands

TV manufacturers offer their own wireless broadcasting solutions:

• 📺 Samsung Smart View — for TV on Tizen (2016 and newer models).
• 📺 LG Screen Share - For webOS (since version 3.0).
• 📺 Sony Screen Mirroring - For Android TV And Google TV.

Example setup for Samsung Smart View:

1. On TV: Settings → General → External devices → Connection device → Screen Mirroring.
2. On PC: Download the utility SmartThings from the Samsung website and follow the connection wizard.

Advantages of proprietary solutions:

• 🔄 Automatic optimization for the TV model (for example, turning on HDR10+ For QLED).
• 🎮 Support for game controllers (eg. Samsung Gaming Hub).

⚠️ Attention: Branded applications often block playback of DRM-protected content (for example, movies from Netflix or Disney+ (in the browser). For this, use the official TV apps.

How to troubleshoot streaming issues

If the video is lagging, the sound is lagging, or the connection keeps dropping, check:

1. Router settings

• 📶 Switch to range 5 GHz (less congested, higher speed).
• 🔄 Turn on QoS (Quality of Service) and set priority for PC/TV devices.
• 🔌 Connect your TV to your router using a cable Ethernet (if possible) - this will reduce the load on Wi-Fi.

2. Computer parameters

• 🖥 Close background programs that consume network bandwidth (Torrent, Steam, OneDrive).
• 🔧 Update your Wi-Fi adapter and graphics card drivers.
• 📂 Transfer movies to SSD (if they lie on HDD, the reading speed may not be sufficient).

FAQ: Frequently Asked Questions

Is it possible to stream a movie from a computer to a TV without a router?

Yes, if your TV supports it. Wi-Fi DirectActivate this feature in your TV settings, then connect to it from your PC as if it were a regular access point. However, the speed will be lower than via a router.

Why is there no sound when streaming via Miracast?

This problem is typical for Windows. Solution:

1. Open Control Panel → Sound.
2. Find the device NVIDIA Virtual Audio or Intel WiDi Audio.
3. Set it as the default device.

If that doesn't help, update your sound card driver.

How to stream a movie from Mac to TV?

On macOS use AirPlay:

1. Make sure your TV supports AirPlay (e.g. LG OLED 2020+ or Samsung QLED 2021+).
2. Turn on AirPlay in your TV settings.
3. On Mac, open Control Center → Screen Mirror and select your TV.

For older TVs use Plex or VLC with the option enabled UPnP.

What is the maximum quality that can be transmitted over Wi-Fi?

Theoretical limits:

• Wi-Fi 5 (802.11ac): to 4K@30 without compression, 4K@60 with compression.
• Wi-Fi 6 (802.11ax): to 8K@30 (under ideal conditions).

In practice, it is stable 4K HDR achieved only through Steam Link or Plex with wired TV connection.

Is it possible to stream Netflix/Disney+ from your computer to your TV?

No, if you use screen mirroring (Miracast, Smart View). These services block playback on "non-certified" devices. Solutions:

• Install the official app Netflix on TV.
• Use Google Cast (if TV supports Chromecast).
• Connect your PC to your TV via HDMI (will bypass DRM restrictions).