For this special IBC 2025 edition of A Guy with a Scarf, I spoke with Dan Coffey, Director of Product at Dolby OptiView, about the future of immersive streaming, new ad formats, and the role of consistency in low-latency delivery.Coffey joined Dolby six years ago through the acquisition of Hybrik. Since then, he has been shaping Dolby OptiView’s product roadmap. For him, technology is always in service of a bigger mission: storytelling. “Telling a good story is immersive when you can use the best technology. It’s like putting the right tool for the right task.”At IBC, Coffey presented Dolby’s latest server-guided ad insertion (SGAI) technology. Instead of the traditional one-size-fits-all ad break, Dolby enables multiple non-linear formats: double box, squeeze-back, or full takeover. The result? More ad opportunities and better monetization without breaking the live experience. “It’s really about giving the opportunity for more ad breaks, and that increases the opportunity for more revenue.”The system also powers regionalized and personalized targeting. Ads can be delivered by geography or down to the individual user, with the same mechanism extended to editorial content such as replays. Imagine watching your favorite match and automatically receiving highlights featuring the players you care most about. As Coffey put it, “It’s about personalizing the ad to the user and the experience to the device.”Latency was another central topic. Dolby OptiView has built a streaming stack that doesn’t just chase the lowest possible delay—it delivers predictable, consistent latency. Sub-second delivery works for interactive features, two seconds is tuned for sports betting, and five seconds aligns with broadcast. “What’s really special about our streaming product is that the latency is very consistent—far more consistent than HLS.”Dolby also showcased an SDR-to-Dolby Vision upconversion demo, upgrading standard feeds to premium HDR quality. For platforms managing mixed-source content, this can ensure audiences always get the best possible viewing experience.Key takeaways: – Storytelling drives technology at Dolby OptiView. – Advertising is being reinvented with non-linear formats and regional targeting. – Personalization goes beyond ads, into editorial content. – Consistency is king in latency, tuned to use cases from fan polls to betting. – Quality upgrades like SDR-to-Dolby Vision ensure premium delivery at scale.What emerges is not just a set of features, but a vision for streaming as a unified, orchestrated experience. Ads, latency, personalization, and quality don’t live in silos—they come together to create a seamless and immersive narrative for fans everywhere.