Unlocking the Future of Accessible Media: IMSC Rosetta (IMSCR), QC Innovation, and The Stellar Suite

In today’s fast-changing media landscape, ensuring accessibility, quality, and efficiency in localization is no longer optional — it’s essential. At Yella Umbrella, we believe that the tools enabling this transformation must be open, interoperable, and designed to serve creative teams.

IMSC Rosetta: A Universal Language for Subtitles

We’re proud to be involved in the IMSC Rosetta initiative (imscr.com), a project that bridges different subtitling and captioning formats through a standardized translation layer. This helps content flow seamlessly across platforms and markets, reducing friction for broadcasters, content owners, and service providers. For global distribution, it means less time wrangling formats — and more time focusing on creative output and accessibility.

Quality Control: Setting a New Benchmark

With The Stellar Suite, Yella is setting a new benchmark for Quality Control (QC) in subtitling and audio description. By combining modular design, customization, and built-in QC, we’ve created a clear blueprint that helps our customers achieve reliable, consistent results across even the most demanding projects.

At the heart of this are the Action Manager and Action Processor, which let you apply tailored business rules and automate QC across multi-language, multi-format workflows. This means fewer errors, less inconsistency, and smoother processes—even in highly complex localization projects.

For content owners, the impact is immediate: faster turnaround times, more reliable deliveries, and a consistently better viewing experience.

“At Yella, we’re focused on building technology that doesn’t just automate tasks, but truly understands the complexity of localization workflows. With IMSC Rosetta and our integrated QC framework, we’re closing long-standing gaps between standards, formats, and quality expectations.

The Stellar Suite brings all of this together — a modular, interoperable environment where every component communicates seamlessly. It’s designed for flexibility at scale, allowing teams to apply their own business logic, enforce QC rules automatically, and deliver consistent results across hundreds of titles and languages.”

— Simon Hailes, CTO, Yella Umbrella

The Stellar Suite: Yella’s Expertise at Work

Both of these projects are embedded in our flagship platform, The Stellar Suite — a powerful set of tools for subtitling, dubbing, and audio description. Designed with accessibility and scalability at its core, The Stellar Suite combines format interoperability (IMSC Rosetta), automated QC, and AI-assisted workflows to give content owners and service providers complete confidence in their localization pipelines.

Our vision is simple: open up stories to everyone, everywhere, with the highest quality and efficiency.

If you’re a content owner, LSP, freelancer or broadcaster looking to future-proof your workflows, The Stellar Suite gives you the foundation to deliver content that resonates globally.

IMSC-Rosetta: A New Era for Subtitle Formats – Bridging Broadcasting and Streaming

In today’s media landscape, delivering consistent, high-quality subtitles across TV and streaming platforms has long been a challenge. To solve this, Warner Bros. Discovery partnered with Yella Umbrella, combining decades of expertise to develop a new standard format: IMSC-Rosetta. Built on IMSC V1.2, this innovation simplifies complexity, ensures reliability, and enables seamless distribution across languages and platforms.

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