California law banning loud streaming ads takes effect July 1
Tags Consumer · Policy
California Governor Gavin Newsom signed SB 576 in October 2025, making it illegal for video streaming services to transmit commercial advertisement audio louder than the accompanying video content starting July 1, 2026. Illinois passed a similar law, increasing pressure on streaming platforms to implement universal volume normalization rather than maintaining state-specific compliance. The law applies to all streaming services operating in California.
Technical significance
The California law effectively mandates loudness normalization (likely EBU R128 or ATSC A/85 compliance) for streaming ad insertion. Platforms that dynamically insert ads at different volumes relative to content will need to implement real-time audio leveling, affecting ad tech infrastructure and potentially reducing the perceptual impact of ad breaks — a rare regulatory win for user experience.