Peacock will stream Telemundo’s Spanish-language broadcasts of the FIFA World Cup 2026 in Dolby Vision HDR and Dolby Atmos audio encoded with the new Dolby AC-4 codec — a first for a major streamer and the biggest sporting event deployment of the format to date. The rollout covers every match and could expose millions of viewers to a noticeably higher-quality streaming soundtrack, provided they have compatible hardware and a Peacock subscription.
- What: Telemundo World Cup coverage on Peacock in Dolby Vision + Dolby Atmos with Dolby AC-4.
- Scope: All 104 matches will use the format.
- Significance: First commercial deployment of Dolby AC-4 by a video streaming service for a major live event.
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How Dolby AC-4 changes streamed audio
Streaming audio has long lagged behind physical media in fidelity because of bandwidth and codec limits. Dolby AC-4 is designed to be more efficient than many existing streaming codecs — Dolby has said it can deliver similar perceived quality at lower bitrates, with claimed efficiency gains in the neighbourhood of 50 percent versus older codecs. In controlled listening tests, trained listeners reportedly found AC-4 mixes difficult to distinguish from high-bitrate, uncompressed audio.
The combination of Dolby Atmos spatial rendering and AC-4’s efficiency means the World Cup soundtrack should deliver clearer dialogue, wider dynamic range and a stronger sense of ambience for viewers with appropriate speaker setups or soundbars. For casual viewers the difference may be subtle; for those with multi-channel systems it can be significantly more immersive.
What you need to watch in full quality
Not every Peacock viewer will automatically receive the upgraded picture and sound. To access the Dolby Vision + Atmos AC-4 stream you will need:
| Requirement | Why it matters |
|---|---|
| Peacock subscription | Only Peacock will carry Telemundo’s AC-4-enabled streams for Spanish-language matches. |
| AC-4–capable TV or streaming device | The device must support decoding of Dolby AC-4 to reproduce the enhanced audio stream. |
| Display with Dolby Vision (for HDR) | Needed to see the higher dynamic range and color improvements promised for live broadcasts. |
| Sound system or soundbar (recommended) | To take full advantage of Dolby Atmos spatial audio and improved dynamics. |
Dolby notes that many major TV brands and platform partners already list AC-4 support. Manufacturers and service partners reported by Dolby include a broad set of global names; still, compatibility varies by model and region, so viewers should confirm support for their specific hardware on the manufacturer’s site or in product documentation.
- Examples of brands commonly supporting the codec: LG, Samsung, Sony, TCL, Panasonic and Hisense.
- Several pay-TV and streaming platform partners are also listed as supporters in various markets.
Why this deployment matters now
The FIFA World Cup is a high-profile testbed: live sports attract large audiences and push real-time delivery systems to their limits. Deploying AC-4 at scale for a global tournament gives manufacturers, broadcasters and streaming platforms concrete experience with the codec under live conditions — not just lab tests.
This matters for consumers because successful live deployments accelerate wider adoption. If AC-4 proves robust in this context, more apps and devices are likely to add support, which could improve streaming audio quality across sports, film and TV in the coming years.
Engineers from Dolby and NBCUniversal spent more than a year integrating Dolby Vision into live sports workflows, according to NBCUniversal’s video engineering leadership. The company frames the effort as a way to offer a differentiated viewing experience on Peacock for Telemundo’s audience.
For viewers deciding whether to upgrade gear ahead of the tournament: check whether your TV or streaming device explicitly supports Dolby AC-4 and whether Peacock on that platform advertises Dolby Vision and Atmos playback. Without matching device support, you may still see the stream but will not benefit from the codec’s improved audio delivery.
In short, the World Cup rollout puts a next-generation audio codec in front of a mainstream audience. The immediate payoff depends on your kit, but the long-term impact could be broader availability of higher-fidelity streaming sound across multiple services.
Jessica Morrison is a seasoned entertainment writer with over a decade of experience covering television, film, and pop culture. After earning a degree in journalism from New York University, she worked as a freelance writer for various entertainment magazines before joining red94.net. Her expertise lies in analyzing television series, from groundbreaking dramas to light-hearted comedies, and she often provides in-depth reviews and industry insights. Outside of writing, Jessica is an avid film buff and enjoys discovering new indie movies at local festivals.