Broadcast video from YouTube on the big TV screen through Wi-Fi — is a convenient way to enjoy content without unnecessary wires. However, not all users know that there are at least five options for this type of transmission, each suitable for different situations. For example, owners Smart TV The latest models can do without additional devices, while older TVs will require Chromecast or Apple TV.
In this article, we will look at all the current methods - from built-in functions YouTube Cast to alternative protocols like DLNA And MiracastWe will pay special attention to typical connection errors, such as video delays, no sound or resolution issues. You'll also learn how to optimize Wi-Fi network for a stable, jerk-free broadcast - this is critical if your router operates at a frequency 2.4 GHz in an apartment building.
Before you begin, check two things: firmware version your TV (relevant for Samsung Tizen, LG webOS, Android TV) And Internet speed — for broadcasting in 4K it will take at least 25 MbpsIf your TV was manufactured before 2018, you will most likely need an external adapter.
1. Broadcast via built-in YouTube on Smart TV
The easiest way is to use the official app YouTube, pre-installed on your TV. It's available on all modern platforms: Tizen (Samsung), webOS (LG), Android TV (Sony, Xiaomi, Philips) and Google TVThe main condition is that the TV and smartphone/tablet must be connected to one Wi-Fi network.
To start broadcasting:
- 📺 Open the app YouTube on your TV and sign in to your account (if required).
- 📱 Launch YouTube On your mobile device, select the video and tap the icon "Broadcast" (in the upper right corner).
- 🔍 In the list of available devices, select the name of your TV (for example,
Samsung QLED 2023). - ▶️ Playback will start automatically. You can control it from your phone or TV remote.
If the broadcast icon does not appear, check:
- 🔄 Update the application YouTube on both devices.
- 📶 Make sure your TV and smartphone are connected to the same network (not a guest network!).
- 🔒 Disable the VPN on your mobile device—it may be blocking local detection.
☑️ Pre-broadcast check
⚠️ Attention: On TVs Samsung 2019-2020 models sometimes reset their settingsDLNAafter updating the firmware. If the streaming suddenly stops working, go toSettings → General → External devices → Control devicesand turn the option back on.
2. Using Google Chromecast or built-in Cast
Google Chromecast (or its built-in analogue Android TV) is a universal solution for broadcasting content from YouTube, Netflix and other services. The device connects to HDMI port TV and works via Wi-Fi. The advantage of this method is support 4K HDR and minimal delays.
Instructions for Chromecast:
- Connect Chromecast to the TV and set it up through the app Google Home (available for Android And iOS).
- Make sure your smartphone and Chromecast on the same Wi-Fi network.
- Open the video on YouTube, click the icon "Broadcast" and choose yours Chromecast.
For Android TV (built-in Google Cast):
- 🔍 Go to
Settings → Devices → Broadcastand enable the option. - 📱 On your smartphone YouTube Select a video → "Stream" → the name of your TV.
| Device | Max. permission | HDR support | Latency (ms) |
|---|---|---|---|
| Chromecast 4K | 3840×2160 |
Yes (Dolby Vision) | 100–150 |
| Chromecast HD | 1920×1080 |
No | 150–200 |
| Built-in Cast (Android TV) | Depends on TV | Yes (if supported by TV) | 80–120 |
⚠️ Attention: If the video is on Chromecast It's slow, but the router is running at the same frequency2.4 GHz, try switching to5 GHzor reduce the bitrate in the settings YouTube (click on the three dots in the player →Quality→ select720p).
3. Stream from an iPhone or iPad via AirPlay
For device owners Apple (iPhone, iPad, Mac) protocol available AirPlayIt works with TVs that support AirPlay 2 (models Samsung since 2018, LG since 2019, Sony With Android TV 9+), as well as through the prefix Apple TV.
How to broadcast:
- 📱 Open the video in YouTube on iPhone/iPad.
- 🔍 Click the icon "Broadcast" (or "AirPlay" in the control panel).
- 📺 Select your TV or Apple TV from the list.
Peculiarities AirPlay:
- ✅ Supports
4K HDRAndDolby Atmos(on compatible devices). - ❌ May not work with some videos due to DRM restrictions (e.g. movies with purchase).
- 🔄 Latency is usually lower than Chromecast (~50–100 ms).
Why can't AirPlay see my TV?
Make sure AirPlay is enabled on your TV: for Samsung this is Settings → General → Apple AirPlay, for LG - Settings → Communications → AirPlayAlso check that both devices are connected to the same network (a guest network is not suitable).
4. Alternative methods: DLNA and Miracast
If your TV does not support YouTube Cast or AirPlay, you can use protocols DLNA (for transferring media files) or Miracast (for screen mirroring). These methods are less convenient, but work on older models.
Method 1: DLNA (via local network)
To do this you will need:
- 📱 A server application on a smartphone (for example, BubbleUPnP For Android or VLC For iOS).
- 📺 Support
DLNAon the TV (in the menu, look for "Network devices" or "Media server").
How to broadcast:
- Download video from YouTube to your smartphone (for example, via YouTube Premium or third-party services).
- Open the file in the server application and select the TV from the list
DLNA-devices.
Method 2: Miracast (screen mirroring)
Miracast Allows you to fully mirror your smartphone screen on your TV without internet access. Supported on Android (starting with version 4.2) and some TVs (Samsung, LG, Sony (from 2013–2015).
How to connect:
- 📺 Turn on the TV
Miracast(Settings → Network → Screen Mirroring). - 📱 On Android open
Settings → Connections → Screencastingand select TV.
⚠️ Attention: When usingMiracastthe delay can reach300–500 ms, making the method unsuitable for games or interactive content. This isn't critical for watching videos.
5. Troubleshooting broadcast issues
Even with proper setup, errors can still occur. Here are the most common ones and how to fix them:
| Problem | Possible cause | Solution |
|---|---|---|
| TV doesn't see the device for broadcasting | Different Wi-Fi networks, VPN, outdated firmware | Connect to the same network, update software, disable VPN |
| The video is slow or choppy. | Weak Wi-Fi signal, router overload | Switch to 5 GHz, reduce the video quality, reboot the router |
| No sound during broadcast | Codec incompatibility, HDMI-CEC disabled | Check the sound settings on your TV, turn it on HDMI-CEC (Anynet+ (at Samsung) |
Low resolution (eg. 480p instead of 1080p) |
Wi-Fi bandwidth limitation | Move your router closer to your TV or use a mesh system |
If the problem persists, try:
- 🔄 Reboot the router (sometimes it helps even with a stable internet connection).
- 📶 Change Wi-Fi channel in the router settings (channels 1, 6, 11 are usually less loaded).
- 🔧 Reset network settings on TV (
Settings → Network → Reset).
6. Optimize Wi-Fi for stable streaming
The quality of the broadcast directly depends on Wi-Fi networksIf your router is older than 5 years or you're using a cheaper model, you'll likely experience lag. Here's how to improve the situation:
Basic settings:
- 📶 Switch to range
5 GHz(less susceptible to interference, but shorter range). - 🔒 Set up encryption
WPA3(orWPA2, IfWPA3(not supported). - 📡 Place the router closer to the TV (or use Wi-Fi repeater).
Advanced settings (for advanced users):
- 🛠️ Turn on
QoS(Quality of Service) and set the priority for traffic YouTube. - 🔄 Update your router firmware (especially relevant for TP-Link, Asus, Keenetic).
- 📊 Change the channel width to
40 MHz(For5 GHz) or20 MHz(For2.4 GHz).
Critical for 4K: If your router doesn't support the standard 802.11ac (Wi-Fi 5) or newer, ultra-HD streaming will not be possible. Minimum requirements for 4K — 802.11ac (or Wi-Fi 6) + channel 5 GHz.
⚠️ Attention: SettingsQoSand traffic prioritization may conflict with some providers (e.g. Rostelecom or Beeline), if they use their own network management mechanisms. In this case, it is better to disableQoSon the router.
7. Comparison of broadcast methods: which one to choose?
Each method has its pros and cons. Here's a brief comparison for different scenarios:
| Method | Pros | Cons | Better for |
|---|---|---|---|
| Built-in YouTube Cast | Simplicity, no additional devices | Doesn't work on all TVs | Smart TV (2018+) |
| Chromecast | 4K support, low latency | Requires purchase of device | Old TVs, high quality |
| AirPlay | Apple integration, Dolby support | Only for iOS/macOS | Apple users |
| DLNA | Works without internet | You need to download the video in advance | Offline viewing |
| Miracast | Duplicates the entire screen | High latency, unstable | Emergencies |
If your TV was released after 2020, the built-in one will likely be enough for you. YouTube Cast. Optimal for older models. Chromecast (or Apple TV for users iPhone). DLNA And Miracast should be considered only as backup options.
FAQ: Frequently Asked Questions
Is it possible to stream YouTube to a TV without Wi-Fi?
Yes, but with restrictions:
- 📱 Through
Miracast(screen duplication without internet, but with delay). - 💾 Through
DLNA, if the video has been downloaded to your smartphone in advance. - 🔌 Through HDMI cable (For example, USB-C to HDMI for modern smartphones).
Wi-Fi is required for online broadcasting.
Why is the video on TV in low quality, even though the phone has 4K?
This is related to:
- 📶 Wi-Fi bandwidth - For
4Kno less is needed25 Mbps. - 🔧 YouTube settings — the mobile app may have a broadcast limit.
- 📺 Limitations of television - Some models artificially reduce quality during Cast.
Solution: Connect to 5 GHz, check your router settings or try broadcasting through Chromecast.
How to stream YouTube from your computer (Windows/macOS) to TV?
Methods:
- 🖥️ Through Chrome browser - open YouTube, click "Broadcast" → select Chromecast or Smart TV.
- 🍎 On macOS - use AirPlay (icon in the control panel).
- 🔄 Through
DLNA- download the video and use the program VLC or Plex.
What should I do if the broadcast keeps interrupting?
The problem is usually related to:
- 📶 Unstable Wi-Fi — check the signal, change the channel on the router.
- 🔄 Network congestion — Disconnect other devices that are downloading files.
- 📵 Interference - if you use
2.4 GHz, go to5 GHz.
If nothing helps, try connecting Chromecast or Apple TV via cable Ethernet (via adapter).
Is it possible to stream YouTube Premium content on TV?
Yes, but:
- 🎬 Video with YouTube Premium (movies, TV series) are streamed only to devices with the official app YouTube (Smart TV, Chromecast, Apple TV).
- 🚫 Uploading such videos through third-party services violates the rules YouTube.
- 📺 Some TVs may require you to sign in to your account YouTube Premium directly on TV.