What is DLNA? Complete Guide to DLNA Streaming

What is DLNA?

DLNA stands for Digital Living Network Alliance. It is an industry-wide standard that defines how electronic devices discover each other and share media content — videos, music, and photos — over a local home network. If your Smart TV and phone are on the same Wi-Fi network, DLNA lets them talk to each other so you can stream content from one device to another without any additional hardware or cables.

Think of DLNA as a common language that devices from different manufacturers all understand. A Samsung TV, an LG soundbar, a Sony phone, and a Windows PC can all share media with each other because they all speak DLNA. Unlike proprietary protocols like Chromecast (Google) or AirPlay (Apple), DLNA is an open standard — it works across brands without locking you into a single ecosystem.

In practical terms, DLNA streaming means you can browse a website on your phone, find a video, and cast it directly to your Smart TV. Your phone tells the TV what to play and acts as a remote control, while the TV handles the actual video playback. This is different from screen mirroring, which duplicates your entire phone screen and drains battery.

What is a DLNA TV?

A DLNA TV is simply a Smart TV with the DLNA standard built in — meaning it can receive and play video, music, and photos sent to it from another device on the same Wi-Fi network. The DLNA function on a TV is technically called a Digital Media Renderer (DMR): the TV sits on your local network, advertises itself, and waits for a controller (your phone, tablet, or PC) to tell it what to play.

Most TVs do not advertise “DLNA” on the box because the standard is built into the operating system. Instead, manufacturers brand it under their own names:

• • Samsung — “AllShare” (older TVs) or “Smart View” / “Device Connect” (Tizen)
• • LG — “SmartShare” (webOS)
• • Sony — “Media Renderer” (Android TV / Google TV)
• • Hisense — “Media Share” or “Content Sharing” (VIDAA)
• • Panasonic / Philips — “DLNA Server” or “Digital Media Renderer”

If your TV was sold from 2012 onward and supports Wi-Fi, it is almost certainly a DLNA TV. The check section below shows you how to confirm in 30 seconds.

DLNA vs HDMI: What's the Difference?

People often ask whether DLNA replaces HDMI, or whether they are the same thing. They're not — they solve different problems and most TVs use both.

The short version: HDMI is the right choice when you need a wired, latency-free link (a console, a laptop running a presentation, a Blu-ray player). DLNA is the right choice when you want to send a video from a phone or PC to your TV without any cables. They aren't mutually exclusive — DLNA on Wi-Fi and HDMI on the back of the TV can be used at different times for different things.

How to Connect Your TV to DLNA

Connecting a TV to DLNA isn't really a connection in the cable sense — DLNA runs over Wi-Fi, and most Smart TVs have it enabled out of the box. Here's the full checklist:

1. Confirm your TV supports DLNA. Almost any Smart TV from 2012 onward does — see the check support section.
2. Connect the TV to the same Wi-Fi as your phone. A guest network or VPN won't work — both devices need to be on the same local network.
3. Enable the Media Renderer setting. See the brand-by-brand instructions in the enable DLNA section. On most TVs this is already on by default.
4. Install a DLNA controller on your phone. Neither Android nor iOS includes native DLNA support. CastBrowser is a free DLNA controller that auto-discovers all DLNA TVs on your network.
5. Open the app and pick your TV. The TV appears in the device list within a few seconds. No pairing codes, no accounts, no setup wizard.

If your TV doesn't appear, the most common causes are: phone and TV on different Wi-Fi bands (2.4 GHz vs 5 GHz on a router with separate SSIDs), an active VPN on the phone, or a router with multicast/UPnP traffic blocked. Restarting the router and toggling Wi-Fi on the TV resolves the majority of cases.

The History of DLNA

The Digital Living Network Alliance was founded in June 2003 by a group of consumer electronics and technology companies led by Sony, Intel, and Microsoft. The original goal was ambitious: create a universal standard so that any device from any manufacturer could seamlessly share media over a home network.

At its peak, the alliance grew to include more than 250 member companies, including Samsung, LG, Panasonic, Philips, Broadcom, Cisco, HP, and many others. Over the years, DLNA certified more than 25,000 different device models across categories including TVs, Blu-ray players, game consoles, smartphones, tablets, NAS drives, media servers, and more.

In January 2017, the DLNA organization officially dissolved. However, this did not mean the end of DLNA technology. The certification program was transferred to SpireSpark International, which continues to manage DLNA testing and certification. More importantly, the underlying DLNA protocol remains built into many Smart TVs sold today. Billions of DLNA-compatible devices are in homes worldwide, and manufacturers continue to include DLNA or UPnP media-renderer support in new products.

How DLNA Works

DLNA uses a set of networking protocols that allow devices to automatically discover and communicate with each other over your home Wi-Fi. Here is how the DLNA streaming process works, step by step:

DLNA Device Roles

The DLNA standard defines several device roles. Understanding these roles helps you see how different devices work together in a DLNA setup:

When you cast a web video with CastBrowser, the app acts as both a DLNA server and a controller. It hosts or proxies the video content and tells your Smart TV (the renderer) to play it. This dual role is what makes it possible to cast compatible website videos to your TV — CastBrowser handles delivery and compatibility, while your TV handles playback.

DLNA vs Chromecast

DLNA and Chromecast are two of the most popular ways to stream media to a TV, but they work differently and have distinct pros and cons. Here is a detailed comparison:

When to choose DLNA: You already own a Smart TV and do not want to buy additional hardware. DLNA works without internet (great for privacy and offline setups), and it is built into far more TVs than Chromecast. If you use Samsung, LG, Sony, Panasonic, or most other Smart TV brands, DLNA is available out of the box.

When to choose Chromecast: You want the tightest integration with Google services (YouTube, Google Photos) or need DRM-protected content from apps like Netflix or Disney+. Chromecast also handles 4K HDR content more reliably, since Google controls both the hardware and software.

Best of both worlds: Use an app like CastBrowser that supports both DLNA and Chromecast. CastBrowser auto-detects all available devices on your network — DLNA Smart TVs, Chromecast, Roku, and Fire TV — so you can cast to any device with a single app.

DLNA vs AirPlay

AirPlay is Apple's proprietary wireless streaming protocol. If you own Apple devices, you may be wondering how DLNA compares to AirPlay:

The key difference: AirPlay only works if you send content from an Apple device. If you have an Android phone, AirPlay is not an option. DLNA works with both Android and iPhone (via apps like CastBrowser), and it is supported on far more TVs than AirPlay.

Even for iPhone users, DLNA can be more versatile. AirPlay 2 requires a compatible TV (mostly newer models from select brands), while DLNA works on nearly any Smart TV, including older models. CastBrowser on iPad and iPhone gives you access to both DLNA and other casting protocols, so you are never limited to just AirPlay-compatible devices.

DLNA vs Miracast

Miracast is sometimes confused with DLNA because both are built into many Smart TVs. However, they serve fundamentally different purposes:

For video streaming, DLNA is almost always the better choice. It delivers full quality with minimal battery impact. Miracast is useful when you need to mirror your entire screen (like for presentations or apps that do not support casting), but it is not ideal for watching videos.

DLNA-Compatible Devices by Brand

DLNA support is nearly universal across Smart TV brands. Here is a comprehensive breakdown of DLNA compatibility by manufacturer:

How to Check if Your TV Supports DLNA

Not sure if your TV has DLNA? Here are several ways to find out:

How to Enable DLNA on Your Smart TV

On most Smart TVs, DLNA is enabled by default. If it is not working, here are brand-by-brand instructions to make sure it is turned on:

DLNA Supported Media Formats

The DLNA specification defines a set of mandatory and optional media formats. Here is what the standard supports:

Video Formats

Audio Formats

Image Formats

Subtitle Formats

DLNA has limited native subtitle support. The standard supports SRT as the primary subtitle format for side-loaded subtitles. Many TVs also support embedded subtitles in MP4 and MKV containers. CastBrowser automatically proxies subtitles in SRT format for maximum DLNA TV compatibility.

DLNA Limitations (and How CastBrowser Solves Them)

While DLNA is powerful and widely supported, it does have some significant limitations — especially when it comes to streaming modern web video. Here is what you may encounter and how CastBrowser addresses each issue:

How to Cast Videos via DLNA with CastBrowser

CastBrowser makes DLNA streaming simple. Here is how to cast a web video to your DLNA Smart TV step by step:

Sources and Standards Notes

This guide is based on DLNA's published history and guideline announcements, manufacturer-facing DLNA certification notes, and CastBrowser's own device testing across Samsung, LG, Sony, Roku TV, and other Smart TV targets.

• • DLNA organization history — the alliance's dissolution notice and certification-continuation details.
• • DLNA 4.0 guideline announcement — DLNA's own description of interoperability and home-network media sharing goals.
• • DLNA / IEC protected streaming announcement — background on DLNA guideline standardization.

Frequently Asked Questions About DLNA