Innovate. Collaborate.
Create.

Welcome to The Stellar Suite, the premier software solution for the complex needs of today’s language service providers, freelancers, broadcasters and content owners. Harness the power to streamline workflows, enhance collaboration, leverage AI and produce content at scale with The Stellar Suite.

Stellar for every user

The Stellar Suite: The Ultimate Solution for Media Localization and accessibility

At Yella Umbrella, we’re revolutionizing the industry with an all-in-one, intuitive, browser-based solution that empowers professionals in subtitling, dubbing, voice-over, and audio description. Built on a secure, cloud-based platform and powered by AI integration, the Stellar Suite streamlines workflows, automates tasks, and enables real-time collaboration—making all forms of localization and accessibility faster, smarter, and more cost-efficient than ever before.

Stellar's revolutionary toolkit

A Closer Look

Watch our comprehensive video to see how The Stellar Suite can transform your media management from inception to delivery. Discover the power of integrated workflows, real-time collaboration and Integrated AI.

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The way to elevate your localization process

YOUR HUB FOR MEDIA LOCALIZATION

Introducing The Stellar Suite, a secure, intuitive, browser-based solution from Yella that streamlines subtitling, dubbing, audio description, and more.

Audio Description

Stellar offers a complete solution for creating high-quality Audio Description (AD), supporting the entire process from script to final delivery. Use AI-driven tools to detect and generate descriptive script cues automatically, then script and record with your own voice, voice artists or choose from over 4,000 lifelike synthetic voices.

Fine-tune your narration with editing and playback controls, and mix audio for any platform—whether for web streaming, TV broadcast, or cinema. Stellar supports all AD formats and integrates seamlessly with ProTools for advanced audio workflows.

Subtitles and captions

The Stellar Suite provides everything you need to create accurate, broadcast-quality subtitles and captions—across all formats, languages, and platforms.

Start from scratch, import existing files with support for precise timing, frame-accurate editing, and styling for open, closed, Teletext, and DVB subtitles, use AI tools to transcript, translate drafts, and on-screen text detection, while built-in QC catches issues like timing, overlaps, and reading speed.

Manage multi-language projects, batch process files, and export in all major industry formats—fast and reliably.

Dubbing

The Stellar Suite offers a complete virtual dubbing studio that lets you record, sync, and deliver multilingual voice-overs with professional precision.

Work with voice artists or choose from over 4,000 high-quality synthetic voices, enhanced by voice morphing, emotion transfer, and orginal dialog removal. Built-in audio-video sync, full support for industry-standard formats, and Pro Tools integration make it easy to manage the entire dubbing process—from script to final mix.

Voice-Overs

The Stellar Suite lets you create professional voice-overs with voice artists or synthetic voices. It offers dip controls, dialog removal for clean tracks, and over 4,000 synthetic voices, plus custom voice creation options. Perfect for high-quality narration in any media project.

Compliance

Ensure every asset meets regional standards and audience expectations with advanced compliance tagging and QC workflows. Stellar gives you the tools to flag and fix content that may violate regulatory, cultural, or audience-specific standards. Our combination of automated and manual review tools ensures every asset is suitable for its intended market. 

Automate

Stellar Automate transforms the way you work with cutting-edge automation and AI-driven tools designed for media localization. From subtitle generation to voice-over production, Stellar Automate takes care of the heavy lifting—so your team can focus on creativity, quality, and innovation.

Manage

Stellar Manage – a single web portal to manage all tasks, media, users, and metadata – anywhere at any time. Streamline your project management for all localization and accessibility workflows.

Convert

Stellar Convert is your go-to solution for fast, accurate, and intelligent conversion of subtitles, captions, scripts, and audio description files—across all languages, formats, and delivery platforms.

Unleash creative potential, minimize operational hassle

Revolutionizing Creative Workflows with Stellar

Stellar has a flexible design to address the different challenges faced by freelancers, language service providers, content owners and broadcasters.

Language Service Providers
Discover the benefits:

The Stellar Suite empowers language service providers, subtitle houses and dubbing studios, by providing a single toolset for creating, editing, managing and automating all workflows for all deliverables.

Browser-based and always up-to-date

Cloud access from any computer.
Stellar is a browser-based solution that needs no costly equipment and runs on Mac and PC.
Enjoy a seamless user experience that includes all enhancements, automatically.

Integrated Management and Progress Overview

The Stellar Suite provides a single portal for managing and tracking all your projects. Manage tasks, media, users and project data in the one system. See the status of all work in progress and highlight bottlenecks and deadlines.

Industry-standard security

The Stellar Suite is secured with industry standard certifications. Your content is totally safe when you use The Stellar Suite.

The Stellar Suite offers multiple media security options: watermarking, encryption, multi-factor authentication, full industry standard digital rights management (DRM) and MediaSeal support to make sure your data is always secure.

Track media access to provide a secure audit trail.

TPN Gold Shield certification.

Flexible pay-per-use model

Enjoy cost-effective usage model that aligns with your workload.
The Stellar Suite’s flexible pricing model ensures you only pay for the days you use the software. If you don’t use it, you don’t pay. No more financial headaches for freelancers with fluctuating projects and smaller businesses on tight budgets.
Add user at any time with no limitation. Scale up or down instantly with no cost, just pay for what you use per day.

Resource planning and cost tracking

The Stellar Suite provides an overview of workloads and resources so you can be sure deadlines will be met. See time spent and associated costs per project, user or client.

Convert file formats, all languages

The Stellar Suite supports all file formats, all languages and all writing systems including the new IMSC Rosetta subtitle file format created for the industry by Warner Brothers Discovery and Yella Umbrella.

Integrated Rules Based QC tools

Centralized Style Profiles define all the client requirements for caption, subtitle, and AD deliverables. Rules based QC system simplifies complex subtitle file correction and editing with auto-correct options. Reduce rejects with up front checks.
Central storage of Style Profiles removes confusion and human errors.

AI-assisted innovation to empower humans

The Stellar Suite integrates with the best available AI services for speech-to-text, machine translation, synthetic voices, voice morphing and dialogue removal. Let AI do the heavy lifting, so humans have space to be more creative and productive.

Single integrated system

The Stellar Suite provides a single integrated system with all the tools you need for all deliverables. One system for subtitles, captions, transcripts, audio description, spoken subtitles, voice-over and lip-sync dubbing.
It simplifies your work by automating routine tasks and keeping everything centralized on a single platform.
Save valuable time and reduce manual errors through effortless project management with progress tracking and easy client communications.Central storage of Style Profiles removes confusion and human errors.

Real-time collaboration

Enhance collaborative quality and improve communications.
Stellar ensures all users and freelancers can collaborate on projects in real time, regardless of their geographical location. Features include shared workspaces, live editing and instant feedback.
Track progress and outstanding errors in real-time.

Save time in collaborative projects by streamlining revisions and ensuring clear communications with clients, staff and freelancers.

Professional customer support

Yella Umbrella provide a range of support options covering software support, operations, IT and media services. Ask for more information

Freelancers
Discover the benefits

The Stellar Suite empowers freelancers by providing a complete professional toolset with no upfront cost. Get the complete set of editing, QC and conversion tools plus integrated AI assistance and workflow management and automation.

Browser-based and always up to date

Cloud access from any computer.
The Stellar Suite is a browser-based solution that needs no costly equipment.
Enjoy a seamless user experience that includes all enhancements, automatically.
No specialist hardware required.
Runs on Mac and PC

Flexible pay-per-use model

Enjoy cost-effective usage model that aligns with your workload.
The Stellar Suite’s flexible pricing model ensures you only pay for the days you use the software. If you don’t use it, you don’t pay. So, no more financial headaches, for freelancers with fluctuating project demands and smaller businesses on tight budgets.
Add user at any time with no limitation. Scale up or down instantly with no cost, just pay for what you use per day.

AI-assisted innovation to empower humans

Empower with AI. Integrate with the best available AI services for speech-to-text, machine translation, synthetic voices, voice morphing, dialogue removal and gap detection. Reduce the effort and cost of external language service providers.

Integrated Rules Based QC tools

Centralized Style Profiles define all the client requirements for caption, subtitle, and AD deliverables. Rules based QC system simplifies complex subtitle file correction and editing with auto-correct options. Reduce rejects with up front checks.
Central storage of Style Profiles removes confusion and human errors.

Convert file formats, all languages

The Stellar Suite supports all file formats, all languages and all writing systems including the new IMSC Rosetta subtitle file format created for the industry by Warner Brothers Discovery and Yella Umbrella.

Customer support from industry experts

Get the support you need, when you need it.
Yella Umbrella provide a range of support options covering software support, operations, IT and media services. Ask for more information.

Broadcasters
Discover the benefits

The Stellar Suite empowers broadcasters by streamlining their workflows with a single set of tools for all media localization and accessibility needs. Retain control of high value media files with market leading encryption and access control and traceability. Manage the creation and modification of all localization and accessibility assets in a single system.

Integrated workflow solutions

Our toolkit integrates effortlessly with media asset management (MAM) and existing workflow systems to boost your operational efficiency and streamline your processes.

Industry-standard security

The Stellar Suite is secured with industry standard certifications. Your content is totally safe when you use The Stellar Suite.

The Stellar Suite offers multiple media security options: watermarking, encryption, multi-factor authentication, full industry standard digital rights management (DRM) and MediaSeal support to make sure your data is always secure.

Track media access to provide a secure audit trail.

TPN Gold Shield certification.

Convert file formats, all languages

The Stellar Suite supports all file formats, all languages and all writing systems including the new IMSC Rosetta subtitle file format created for the industry by Warner Brothers Discovery and Yella Umbrella.

Integrated Rules Based QC tools

Centralized Style Profiles define all the client requirements for caption, subtitle, and AD deliverables. Rules based QC system simplifies complex subtitle file correction and editing. Reduce rejects with up front checks.
Central storage of Style Profiles removes confusion and human errors.

Browser-based and always up-to-date

Cloud access from any computer.
Stellar is a browser-based solution that needs no costly equipment and runs on Mac and PC.
Enjoy a seamless user experience that includes all enhancements, automatically.

Smart archive management

Efficiently preserve and organize your valuable subtitle and audio description archives with our streamlined solutions. Modernize legacy formats to enhance accessibility and ensure compliance while maximizing their long-term value.

Integrated Management and Progress Overview

The Stellar Suite provides a single portal for managing and tracking all your projects. Manage tasks, media, users and project data in the one system. See the status of all work in progress and highlight bottlenecks and deadlines.

AI-assisted innovation to empower humans

Empower with AI. Integrate with the best available AI services for speech-to-text, machine translation, synthetic voices, voice morphing, dialogue removal and gap detection. Reduce the effort and cost of external language service providers.

Customer support from industry experts

Yella Umbrella provide a range of support options covering software support, operations, IT and media services. Ask for more information

Resource planning and cost tracking

The Stellar Suite provides an overview of workloads and resources so you can be sure deadlines will be met. See time spent and associated costs per project, user or client.

Real-time collaboration

Enhance collaborative quality and improve communications.
Stellar ensures all users and freelancers can collaborate on projects in real time, regardless of their geographical location. Features include shared workspaces, live editing and instant feedback.
Track progress and outstanding errors in real-time.

Save time in collaborative projects by streamlining revisions and ensuring clear communications with clients, staff and freelancers.

Content Owners
Discover the benefits

For content owners, the Stellar Suite ensures faster turnarounds, consistent quality, and full control across all localization workflows. Secure, scalable, and built for global distribution—bring your stories to every audience with confidence.

Industry-standard security

The Stellar Suite is secured with industry standard certifications. Your content is totally safe when you use The Stellar Suite.

The Stellar Suite offers multiple media security options: watermarking, encryption, multi-factor authentication, full industry standard digital rights management (DRM) and MediaSeal support to make sure your data is always secure.

Track media access to provide a secure audit trail.

TPN Gold Shield certification.

Convert file formats, all languages

The Stellar Suite supports all file formats, all languages and all writing systems including the new IMSC Rosetta subtitle file format created for the industry by Warner Brothers Discovery and Yella Umbrella.

Browser based and always up-to-date

Cloud access from any computer.
Stellar is a browser-based solution that needs no costly equipment and runs on Mac and PC.
Enjoy a seamless user experience that includes all enhancements, automatically.

Integrated Rules Based QC tools

Centralized Style Profiles define all the client requirements for caption, subtitle, and AD deliverables. Rules based QC system simplifies complex subtitle file correction and editing with auto-correct options. Reduce rejects with up front checks.
Central storage of Style Profiles removes confusion and human errors.

Integrated Management and Progress Overview

The Stellar Suite provides a single portal for managing and tracking all your projects. Manage tasks, media, users and project data in the one system. See the status of all work in progress and highlight bottlenecks and deadlines.

Customer support from industry experts

Yella Umbrella provide a range of support options covering software support, operations, IT and media services. Ask for more information

Resource planning and cost tracking

The Stellar Suite provides an overview of workloads and resources so you can be sure deadlines will be met. See time spent and associated costs per project, user or client.

AI-assisted innovation to empower humans

The Stellar Suite integrates with the best available AI services for speech-to-text, machine translation, synthetic voices, voice morphing and dialogue removal. Let AI do the heavy lifting, so humans have space to be more creative and productive.

Real-time collaboration

Enhance collaborative quality and improve communications.
Stellar ensures all users and freelancers can collaborate on projects in real time, regardless of their geographical location. Features include shared workspaces, live editing and instant feedback.
Track progress and outstanding errors in real-time.

Save time in collaborative projects by streamlining revisions and ensuring clear communications with clients, staff and freelancers.

Meet Yella Umbrella: Innovators in Media Localization

Media localization for the future

By combining the latest AI tools with a powerful automated workflow engine, Yella Umbrella helps you face the future with confidence. We believe you should be able to focus on the creative elements of media localization and let automation and AI take care of repetitive tasks.

Testimonials

Discover what our clients have to say

At Vertala, we use Yella Umbrella’s Stellar Suite to manage and streamline our subtitling workflows across a wide range of projects and clients. The platform supports efficient, accurate, and flexible subtitle creation, review, and delivery across our output, including multiple Asian languages. Stellar’s tools have helped us maintain high quality standards while scaling to meet demanding turnaround times. Throughout our collaboration, the Yella team has been consistently helpful and responsive, offering expert support and adapting quickly to our evolving needs.

Hayden Punter

CFO at Vertala (TVT Media)

As a freelance translator, Stellar has revolutionized the way I work. Its intuitive design and powerful features have significantly reduced my project turnaround times.

Nathalie Delacroix

Freelance translator at Copy2U

At Broadcast Intelligence, we use Yella Umbrella’s Stellar Suite to manage and streamline our subtitling workflows across a wide range of projects and clients for both subtitle creation and for conforming existing subtitle files. The Stellar tools have helped us maintain high quality standards while scaling to meet demanding turnaround times. Throughout our collaboration, the Yella team has been consistently helpful and responsive, offering expert support and adapting quickly to our evolving needs.

Jake Robbins

COO at Broadcast Intelligence

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