What the Global Streaming Business Is Learning From Evolving Loudness Regulation
A few months into California’s new streaming loudness rules, one thing has become clear: while SB 576 was designed to stop viewers being jolted by overly loud commercials, the practical impact reaches far deeper into the streaming workflow. For platforms, meeting the requirement isn’t just about preventing loud ads – it’s about rethinking how audio is measured, validated and preserved across increasingly complex delivery chains.
Broadcast has long relied on mature loudness practices. Streaming, by contrast, grew up in a fragmented ecosystem where content and advertising arrive from countless suppliers, pass through separate processing paths and are assembled dynamically at the point of delivery. As streaming advertising has scaled, so too has the number of places where audio consistency can drift.
California’s intervention is therefore less a one-off regulation and more a signal of where the industry is heading. As streaming becomes the dominant viewing platform, expectations around audio quality, including clarity, balance, and intelligibility, are rising with it.
Great audio starts earlier in the streaming workflow
One of the biggest lessons from adapting to SB 576 is that loudness cannot be treated as a final QC step. Platforms need visibility into audio from the moment assets enter their ecosystem. That means measuring loudness at ingest, preserving metadata through encoding and transcoding, and continuously validating output against required targets.
Advertising complicates this further. Server-side ad insertion gives platforms more control, but client-side insertion leaves far fewer opportunities to correct issues before playback. And relying on every advertising partner to deliver perfectly prepared assets is unrealistic in a global, high-volume streaming environment.
Automated tools are becoming essential for checking and correcting loudness at scale. Equally important is setting clear audio requirements for partners so problems can be identified and fixed before they reach viewers.
The growing global focus on dialogue intelligibility
Once platforms have consistent visibility into audio, loudness becomes only one part of the quality equation. Two programmes can meet identical loudness targets yet deliver very different listening experiences. Dialogue can still be overshadowed by music and effects or degraded by processing and distribution.
The challenge is that most broadcasters still rely on manual, subjective processes to assess intelligibility. A common language for measuring speech clarity has been missing for years.
That gap is now closing. Dialogue intelligibility was a major theme at IBC2026, where the Crystal Clear Accelerator – led by Channel 4 with support from the BBC, ITV, Sky and others – showcased early work on objective, machine-based measurement. The project combines emerging algorithms and AI with a human assessment scale designed to make intelligibility reviews more consistent across broadcast and published content. Industry groups such as LEAP are already building on this momentum, working toward shared frameworks that can be applied across products and workflows.
The significance isn’t that platforms suddenly need another compliance target. It’s that the industry is finally developing objective ways to understand aspects of audio quality that have historically lacked standard measurement.
For streaming providers, improving dialogue intelligibility is an opportunity to strengthen viewer engagement. When dialogue is consistently clear, audiences stay immersed rather than frustrated, directly contributing to retention.
From California to Copenhagen – what comes next?
California’s rules shouldn’t be viewed in isolation. They reflect a broader recognition of what audiences will expect from streaming audio in the long term. In Europe, EBU R 128 has shaped loudness practices for years, and new guidance is extending those principles into streaming environments.
If other jurisdictions introduce tighter requirements, the incentive will be to build common processes that satisfy multiple markets rather than maintaining separate workflows for each region. Creating one infrastructure for California, another for the rest of the U.S., and further variations internationally is neither efficient nor sustainable.
California’s legislation has forced streaming businesses to examine where audio is measured, who is responsible for it and how quality can be maintained across increasingly complex delivery chains. The opportunity now is to build on that foundation.
The goal should not simply be proving that an advertisement meets a loudness target. It should be creating streaming infrastructure capable of measuring, protecting and improving the entire listening experience, from loudness to intelligibility to overall clarity.
[Editor's note: This is a contributed article from Telos Alliance. Streaming Media accepts vendor bylines based solely on their value to our readers.]
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