Update: LG has contacted TechRadar to clarify that while its TVs will support the spatial audio technology that Eclipsa Audio is based on, it's not part of any licensing agreement to use the name Eclipsa Audio. The underlying tech is called IAMF, and LG will support this, so video labelled as being in the Eclipsa Audio format should work fully on LG TVs — but LG isn't using the name Eclipsa Audio anywhere, so it won't be identified as such in the settings. The rest of this article remains as originally published.
LG is adding support for the Eclipsa Audio format to its 2026 models, as well as to certain 2025 TVs. This is an alternative to Dolby Atmos, delivering spatial audio over streaming, and was notably developed by Samsung and Google.
According to a report from FlatpanelsHD, all of LG's 2026 TVs will support Eclipsa Audio, and support has been added to the following 2025 TVs via a free update: the LG G5, the LG C5, the LG CS5, and the LG QNED9M.
FlatpanelsHD says the format will be supported for playback over the TVs' built-in speakers, or can be passed out to compatible soundbars (such as the Samsung HW-Q990F).
Eclipsa Audio is being released by the Alliance for Open Media, much like HDR10+ is, and has no licensing fees or royalties, so companies can choose to support based purely on whether they think the technical development is worth it. All of this is true of HDR10+ as well, but LG has never seen fit to support the rival to Dolby Vision — we'll come back to why I think it's different this time, though.
We spoke to Samsung in-depth in the past about why it developed Eclipsa Audio, what it hoped to achieve, and why it believed Dolby Atmos couldn't be the sole future for 3D sound.
Samsung said that it wasn't to expand into areas where Dolby Atmos either isn't widely already used, or is prohibitive. "Dolby is not involved in gaming seriously, and they’re not involved in in-car audio," said Samsung Audio Lab VP Allan Devantier (though I should add that Dolby definitely invests a lot in in-car audio — see the Cadillac Optiq this year).
Samsung is particularly keen for Eclipsa Audio to be used by smaller content creators, which Devantier says "can’t make immersive content because to make Atmos content costs too much money." The idea of offering spatial sound to small creators seems to be Google's goal as well, because it's already integrated the technology into YouTube.
There are ambitions for Eclipsa Audio to be used by movies and TVs as a full rival to Atmos for large-scale productions, though: Samsung said "we're working with Netflix and Amazon" on the format, though no announcements have been made there.
Analysis: a surprise, given LG cautiousness with other formats
Some TV brands, such as TCL and Hisense, like to embrace a ton of formats, which helps to give their TVs a sense of being incredible value. LG is a lot more circumspect about such things, usually.
The company has supported DTS audio formats at times in the past, but that's been on and off — it's currently off. LG also told me at a recent event that it still has no immediate plans to support Dolby Vision 2, and representatives were unsure if the 2026 TVs could even be updated to support it in the future.
This decision was based on the lack of Dolby Vision 2 content currently — LG said it would consider support when there are things to watch that fully make use of the format.
Now, one might note that both DTS and Dolby Vision 2 require paying a fee to include in a set, so there's a strong reason for a business not to support them if it doesn't think it's a problem to exclude them.
However, HDR10+ doesn't require a fee to support, but LG has always been vehemently against it, instead focusing solely on Dolby Vision HDR. In the past, LG's answer has usually been similar to the Dolby Vision 2 answer: that there wasn't enough content to justify adding support.
More recently, HDR10+ has been added to more streaming services (including Apple TV+ and its movie rentals, Disney+ in some countries, including some Hulu content, and Paramount+ on some content), so last year I asked LG about adding support, given that it's now more widely available.
The company said that it still doesn't see the point, claiming pretty much anything available in HDR10+ will be available in Dolby Vision too. It also said that it believes its own tone mapping processing is superior to HDR10+, removing the need for it, and that it was simply likely never to support it.
So, why is Eclipsa different? Well, I suspect it's to do with something I mentioned above: YouTube. YouTube doesn't, and I suspect never will, support Dolby Atmos. YouTube is also more popular on TVs than even the likes of Netflix and Disney+. And TVs have become the most popular way to watch YouTube, surpassing even phones.
If people start expecting and enjoying things on YouTube with more immersive Eclipsa Audio, then LG doesn't want to be left as a platform where you're not getting the best sound from the most popular streaming app. Especially since Samsung already supports Eclipsa Audio, and Google TV supporting Eclipsa means TCL, Hisense, and Sony will surely all include the format. And if Samsung's been working with Amazon, we can assume Fire TV sets may support it at some point.
LG could afford to be 'left out' of HDR10+ because, as it rightly said, Dolby Vision was the only game in town for so long in practice, and is still the bigger player. But Eclipsa Audio will make its impact in places that Atmos will likely never reach, so it makes sense for LG to actually join Samsung in an upstart format, for once.
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