DLNA (Digital Living Network Alliance)

» see dlna.org as it lived, on the wayback machine

~ the eulogy ~

For about a decade the small gray logo was on everything. It was printed on the back of televisions, on Blu-ray player boxes, on network drives, on printers, on Sony phones, on the PlayStation 3. DLNA Certified meant your TV could find the movie file sitting on your computer and play it without a cable. That was the promise, and the logo was the only part of it that shipped reliably.

The alliance behind it started in June 2003 as the Digital Home Working Group, convened by Intel with Sony and Microsoft alongside, and renamed itself the Digital Living Network Alliance in 2004 when it published its first guidelines. Those guidelines sat on top of UPnP and specified which media formats a certified device had to understand and how protected content was allowed to move between devices. Version 1.0 had around fifty media profiles. By version 1.5 in March 2006 there were roughly 250 of them across twelve device classes, with link protection added.

On 5 January 2017 the organization put out a press release from Portland, Oregon with the headline DLNA FULFILLS MISSION, DISSOLVES AS NON-PROFIT TRADE ASSOCIATION. Chairman and president Stephen Palm put the final count at "nearly 4 billion units certified across more than 25,000 device models during the past 13 years". The certification program moved on 1 February to SpireSpark International, a new firm founded by former DLNA executives and staffed by the same testing people, which has kept the lights on without touching the guidelines since.

Read the official account next to the trade coverage and the mission-accomplished framing does not survive. CSI Magazine reported in April 2017 that membership had drained away. Nokia and Microsoft had both left, and Apple never joined at any point. By the end only three founding members were still in the room, Sony and Samsung among them, and merger talks with another nonprofit had found nobody suitable to merge with.

~ the dossier ~

~ why it never worked ~

The structural flaw was in the certification itself, and The Register had it pinned down by February 2009. Devices were tested one at a time against a conformance suite in a lab and were then assumed to interoperate with every other certified device on the market. Two certified boxes were never actually tested against each other. When a certified drive and a certified Sony player would not cooperate, each vendor pointed at the other and both were telling the truth about their own paperwork.

On top of that sat the format problem. A device only had to support the profiles in the guidelines, so a perfectly legal DLNA server could offer your TV a file the TV was perfectly legally entitled to refuse. The result was the failure that defined the whole category for ordinary users. The device can see the file perfectly well and still refuse to play it. CableLabs chief executive Phil McKinney said afterward that the self-certification approach had made real interoperability hard to reach.

~ what took the home over instead ~

Chromecast arrived in 2013 and ignored the entire model. Instead of streaming the file from your machine to your TV, it handed the TV a URL and let the TV fetch it from the internet. That made the format-profile question irrelevant, because the app on the far end dealt with its own video. AirPlay did something similar inside Apple's own walls, which is one reason Apple had no interest in joining a cross-vendor alliance in the first place.

Where DLNA actually stuck was somewhere nobody designed it for. SpireSpark's last dated newsletter, from October 2021, reports that automotive was by then the leading certification category at over 70% of certified devices. The standard for watching your downloaded films on the living-room television ended its working life wiring phones to car head units.

~ the notice ~

dlna.org is still up, and it is one of the better tombstones on the web because nobody tidied it. The homepage still advertises certification in the present tense, over a banner reading "13 years and four billion devices later", with a 2017 copyright line at the bottom. Below that sits the notice, which opens: The Digital Living Networking Alliance has dissolved and is no longer operating.

Networking. The farewell message gets the organization's own name wrong, and has done for nine years.

~ the turkish shelf ~

This one did reach Turkey, which is not true of most things I write up here. The logo was on the Samsung and LG sets in every showroom, and it was on the network drives stacked behind the counter at the computer shops. Nothing about it was regional. The guidelines were written for a living room that could have been anywhere, and the failure mode traveled with them perfectly intact.

I am an engineer and this was squarely the kind of thing I would poke at: a media server on the local network, a television that advertised it could see one. What survives in memory is not any particular evening of it working. It is the shape of the attempt. You get the server listed, you get the file listed, and then the television refuses the container it is looking at and you go and convert the file instead.

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