Stellar Automate is a powerful automation engine built to streamline media localization workflows at scale. By combining industry-leading AI services with Yella’s in-house automation tools, it removes repetitive tasks across subtitling, dubbing, voice-over, and audio description. The result: faster turnaround times, greater consistency, and less manual effort. So your team can focus on creativity and quality, not admin.
Stellar Automate
The Stellar Suite offers a comprehensive, cloud-based platform designed to simplify and streamline the entire media localization process. Providing an all-encompassing solution, The Stellar Suite integrates seamlessly with advanced production tools to manage media accessibility and translation workflows from start to finish. It enables teams to effortlessly collaborate across borders, securely manage media assets, and ensure precise, high-quality localization. With features like global task assignment, real-time progress tracking, advanced security protocols, and customizable user access, Stellar empowers language service providers, subtitling houses, dubbing studios, broadcasters, and content owners to work faster, smarter, and more efficiently. Whether you’re managing internal staff or external contractors, Stellar transforms your media localization operations with unparalleled security, flexibility, and control.
Faster localization, less effort.
Next-gen media workflows, driven by smart automation.
Blueprint-Driven Automation
Use blueprints to automate your processes
Design custom sequences of actions using Blueprints to automate repetitive localization steps. Each Blueprint can automatically:
- Create tasks based on media files
- Apply subtitle templates with correct styles
- Generate synthetic voice-over or AD prompts
- Pre-process audio and text elements for downstream task
Workflow Management
Design workflows to streamline your task management
Every task in Stellar Automate follows a defined workflow. Workflows control:
- Task steps and dependencies
- Conditional branching and parallel steps
- User assignments and automated triggers
- Differentiated flows for subtitles, dubbing, AD, and multilingual projects
This ensures transparency, accountability, and consistency across your entire pipeline.
AI-Driven Automation
Stellar Automate allows the integration of a range of AI services into your automatic blueprints. Saving time, removing repetitive steps and the chance of human error.
Speech to Text - ASR
Powered by our trusted AI partners, Speech-to-Text technology transforms spoken audio into precise, time-coded text instantly. Whether you’re creating subtitles, dubbing scripts, or audio descriptions, our integrated AI tools deliver fast, multilingual transcriptions that adapt to accents and sound environment.
Machine translation
Machine Translation, powered by leading AI partners, instantly translates transcripts and subtitles into multiple languages with remarkable accuracy. Integrated directly into the Stellar Suite, it enables you to move from source to localized content in seconds — speeding up turnaround and reducing costs without compromising quality. Combined with human review and Yella’s intuitive editing tools, it’s the perfect balance of automation and creative control.
Text to Speech – Synthetic Voices
Bring translated scripts to life with natural-sounding synthetic voices, powered by our trusted AI partners. Instantly generate high-quality voice-overs in multiple languages and tones—perfect for dubbing, trailers, promos, and audio description (AD). Fully integrated into the Stellar Suite, you can preview, fine-tune, and render with ease, cutting turnaround times and costs while staying firmly in creative control.
-
Create AD files without a recording booth or studio.
-
Produce voice-over and dubbing tracks using multiple synthetic voices, or a seamless mix of human and synthetic.
Speech to Speech – Voice Morphing
Harness the performance of voice actors, then seamlessly morph their delivery to match another voice, language, or style—powered by our trusted AI partners. Integrated into the Stellar Suite, you can capture emotion and timing from the original performance while transforming timbre, accent, and tone for perfect creative fit. Scale dubbing, trailers, promos, and AD faster, with consistent quality and full creative control.
-
Morph a voice actor’s performance to sound like another approved voice.
-
Create and manage custom voices tailored to your brand or characters.
Respeeching
Re-record dialogue for cleaner, synchronized audio
OCR
Extract text from images and video frames for subtitling
Dialog Removal
- Create a new music and effects (M+E) track without the original dialog.
- Create professional VO and dubbing even if you don’t have an original M+E.
Dialog splitting
Separate character lines for easier dubbing and mixing
Subtitle splitting
Intelligent re-splitting: instantly convert subtitle files between different styles – DVB to Teletext
Standard & Custom Automation Tools (non-AI)
Stellar Automate lets you integrate both out-of-the-box and fully customizable automation tools into your localization workflows. Whether you’re generating styled subtitles or preparing audio description files, you can build intelligent, repeatable processes tailored to your specific needs. All powered by flexible, blueprint-driven automation.
Video transcoding with DRM encryption option
From almost all video formats to internal proxy video for use in Stellar Create
Audio Mixing
Create AD, VO and dubbing audio in a wide range of professional formats
Subtitle rendering and encoding
- Create subtitle outputs for a wide range of formats
- Graphics ready for user in external systems
- Burnt into a range of video formats
- DVB encoded subtitle streams
- Other professional formats
- Synthetic voice rendering – automate the text to speech step for AD and spoken subtitles
- Subtitle and caption file format conversion – all professional and many other formats supported
- Automatic subtitle file QC and correction
- Automatic subtitle file conforming based on EDL files
- Task duplication – take a Task with the original language template and create a separate task (possibly with machine translation) for each target language and assign them to different users.
Next-gen media workflows, driven by smart automation.
Blueprint-Driven Automation
Use blueprints to automate your processes
Design custom sequences of actions using Blueprints to automate repetitive localization steps. Each Blueprint can automatically:
- Create tasks based on media files
- Apply subtitle templates with correct styles
- Generate synthetic voice-over or AD prompts
- Pre-process audio and text elements for downstream task
Workflow Management
Design workflows to streamline your task management
Every task in Stellar Automate follows a defined workflow. Workflows control:
- Task steps and dependencies
- Conditional branching and parallel steps
- User assignments and automated triggers
- Differentiated flows for subtitles, dubbing, AD, and multilingual projects
This ensures transparency, accountability, and consistency across your entire pipeline.
AI-Driven Automation
Stellar Automate allows the integration of a range of AI services into your automatic blueprints. Saving time, removing repetitive steps and the chance of human error.
Speech to Text - ASR
Powered by our trusted AI partners, Speech-to-Text technology transforms spoken audio into precise, time-coded text instantly. Whether you’re creating subtitles, dubbing scripts, or audio descriptions, our integrated AI tools deliver fast, multilingual transcriptions that adapt to accents and sound environment.
Machine translation
Machine Translation, powered by leading AI partners, instantly translates transcripts and subtitles into multiple languages with remarkable accuracy. Integrated directly into the Stellar Suite, it enables you to move from source to localized content in seconds — speeding up turnaround and reducing costs without compromising quality. Combined with human review and Yella’s intuitive editing tools, it’s the perfect balance of automation and creative control.
Text to Speech – Synthetic Voices
Bring translated scripts to life with natural-sounding synthetic voices, powered by our trusted AI partners. Instantly generate high-quality voice-overs in multiple languages and tones—perfect for dubbing, trailers, promos, and audio description (AD). Fully integrated into the Stellar Suite, you can preview, fine-tune, and render with ease, cutting turnaround times and costs while staying firmly in creative control.
-
Create AD files without a recording booth or studio.
-
Produce voice-over and dubbing tracks using multiple synthetic voices, or a seamless mix of human and synthetic.
Speech to Speech – Voice Morphing
Harness the performance of voice actors, then seamlessly morph their delivery to match another voice, language, or style—powered by our trusted AI partners. Integrated into the Stellar Suite, you can capture emotion and timing from the original performance while transforming timbre, accent, and tone for perfect creative fit. Scale dubbing, trailers, promos, and AD faster, with consistent quality and full creative control.
-
Morph a voice actor’s performance to sound like another approved voice.
-
Create and manage custom voices tailored to your brand or characters.
Respeeching
Re-record dialogue for cleaner, synchronized audio
OCR
Extract text from images and video frames for subtitling
Dialog Removal
- Create a new music and effects (M+E) track without the original dialog.
- Create professional VO and dubbing even if you don’t have an original M+E.
Dialog splitting
Separate character lines for easier dubbing and mixing
Subtitle splitting
Intelligent re-splitting: instantly convert subtitle files between different styles – DVB to Teletext
Standard & Custom Automation Tools (non-AI)
Stellar Automate lets you integrate both out-of-the-box and fully customizable automation tools into your localization workflows. Whether you’re generating styled subtitles or preparing audio description files, you can build intelligent, repeatable processes tailored to your specific needs. All powered by flexible, blueprint-driven automation.
Video transcoding with DRM encryption option
From almost all video formats to internal proxy video for use in Stellar Create
Audio Mixing
Create AD, VO and dubbing audio in a wide range of professional formats
Subtitle rendering and encoding
- Create subtitle outputs for a wide range of formats
- Graphics ready for user in external systems
- Burnt into a range of video formats
- DVB encoded subtitle streams
- Other professional formats
- Synthetic voice rendering – automate the text to speech step for AD and spoken subtitles
- Subtitle and caption file format conversion – all professional and many other formats supported
- Automatic subtitle file QC and correction
- Automatic subtitle file conforming based on EDL files
- Task duplication – take a Task with the original language template and create a separate task (possibly with machine translation) for each target language and assign them to different users.
Automate the repetitive, accelerate the creative.
AI DRIVEN AUTOMATION
Stellar Automate brings advanced AI directly into your localization workflows—automating complex tasks across subtitling, dubbing, voice-over, and audio description. Powered by trusted industry partners, it combines precision, speed, and scalability so your teams can focus on creativity and quality.
AI capabilities per tool:
Subtitling
- Rapid, scalable translation using services such as Google Translate, XL8, and Anthropic (Claude).
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Speech-to-Text (ASR): Generate subtitle drafts with accurate, time-coded transcriptions using AI from providers such as Google, Speechmatics, Amazon Transcribe, Rev.AI, Gladia (Whisper), ElevenLabs and more.
- Natural Language Models: Integrate with ChatGPT to support contextual script refinement, QA, or language simplification.
- Optical Character Recognition (OCR): Extract embedded text from video for use in subtitles or metadata tagging.
- Subtitle splitting: Intelligent re-splitting, instantly convert subtitle files between different styles – DVB to Teletext
Dubbing & Voice-Over
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Synthetic Voices (Text-to-Speech): Generate lifelike voice tracks using AI voices from Amazon Polly, Microsoft Azure, and Google Wavenet (DeepMind).
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Voice Cloning & Synthesis: Create highly accurate voice replicas with partners like ElevenLabs, Respeecher, and Deepdub.
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Voice Morphing: Modify tone, pitch, and delivery style for emotional and contextual alignment—powered by Deepdub, Respeecher, and ElevenLabs.
Audio Description
- Gap Detection and ASR: Automatically identify non-dialogue segments and pre-structure AD scripts, accelerating workflows.
- Synthetic Voices (Text-to-Speech): Generate lifelike voice tracks using AI voices from Amazon Polly, Microsoft Azure, and Google Wavenet (DeepMind).
- Optical Character Recognition (OCR): Extract embedded text from video for use in subtitles or metadata tagging.
- Audio Separation: Use tools like AudioShake to isolate voice, effects, and music tracks from mixed audio.
Smarter automation for faster, more scalable media localization.
Scaling Success Through AI Partnerships
At Yella, we believe true innovation is powered by collaboration. That’s why Stellar Automate seamlessly blends our in-house automation tools with cutting-edge AI technologies from the world’s leading providers. Through these strategic partnerships, we’re not just transforming workflows, we’re shaping the future of localization, empowering our clients to scale faster, deliver more, and operate smarter across global markets.
We’ve partnered with leading AI pioneers to bring best-in-class automation directly into Stellar. These integrations help our clients scale efficiently while maintaining full control and transparency.
Our trusted AI partners include:
Our trusted AI partners include:
Partner technologies
Voice Morphing & Respeeching
Partner technologies
Automatic Speech Recognition (ASR) & Transcription
Partner technologies
Dialogue Removal & Audio Processing
Partner technologies
Machine Translation
Partner technologies
Scaling Success Through AI Partnerships
At Yella, we believe true innovation is powered by collaboration. That’s why Stellar Automate seamlessly blends our in-house automation tools with cutting-edge AI technologies from the world’s leading providers. Through these strategic partnerships, we’re not just transforming workflows, we’re shaping the future of localization, empowering our clients to scale faster, deliver more, and operate smarter across global markets.
We’ve partnered with leading AI pioneers to bring best-in-class automation directly into Stellar. These integrations help our clients scale efficiently while maintaining full control and transparency.
Our trusted AI partners include:
Partner technologies
Voice Morphing & Respeeching
Partner technologies
Automatic Speech Recognition (ASR) & Transcription
Partner technologies
Dialogue Removal & Audio Processing
Partner technologies
Machine Translation
Partner technologies
Automation designed by localization experts, built into Stellar.
Yella-Built Features:
Subtitle Splitting
Automatically restructure subtitles to match platform and client style guides
OCR (Text Detection)
Extract on-screen text for translation or compliance
File Format Conversion
Convert between formats like SRT, EBU-TT, WebVTT, and more
Automated QC
Flag and optionally fix timing, formatting, and text issues
Video Proxy Generation
Create low-res proxies with shot-change detection for smoother editing
Audio Waveform Visualization
Generate waveforms to assist in dubbing, voice-over, and QC
AD & Dubbing Audio Mix
Automatically mix audio description or dubbed dialogue into the original track
Yella-Built Features:
Subtitle Splitting
Automatically restructure subtitles to match platform and client style guides
OCR (Text Detection)
Extract on-screen text for translation or compliance
File Format Conversion
Convert between formats like SRT, EBU-TT, WebVTT, and more
Automated QC
Flag and optionally fix timing, formatting, and text issues
Video Proxy Generation
Create low-res proxies with shot-change detection for smoother editing
Audio Waveform Visualization
Generate waveforms to assist in dubbing, voice-over, and QC
AD & Dubbing Audio Mix
Automatically mix audio description or dubbed dialogue into the original track
Supercharge Your Productivity
Smarter Workflows, Powered by AI
Watch our comprehensive video to see how Stellar can transform your media management from inception to delivery. Discover the power of automated workflows.
Smarter Workflows, Powered by AI
Watch our comprehensive video to see how Stellar can transform your media management from inception to delivery. Discover the power of automated workflows.
Design workflows to streamline your task management
Stellar Automate streamlines the entire localization workflow —reducing manual work and speeding up delivery through intelligent automation and AI-powered processes. Once a Task is created it follows a set Workflow. A workflow controls what steps are required to produce the final output. The workflow for original language captions would be different from multi-lingual translation subtitles in 16 languages. Workflows control the steps, what each step is called, which step(s) can come next, changes to who is assigned at different steps and optional automated actions.
This workflow shows how The Stellar Suite automates and streamlines the entire subtitling and translation process. From media ingest to delivery, repetitive steps like speech-to-text, OCR detection, draft file creation, QC, translation, format conversion, and distribution are handled by automation and AI. Human expertise is applied only where it adds the most value—such as corrections and nuanced quality checks—ensuring both speed and accuracy. The result: faster turnaround, fewer errors, and scalable, high-quality outputs across multiple subtitle formats.
This workflow demonstrates how The Stellar Suite streamlines audio description from start to finish. Media ingest, gap detection, draft scripting, task distribution, mixing, and delivery are all automated or AI-assisted, while human creativity is applied to scripting and quality control. With the option of AI or human voice recording, Stellar ensures both speed and artistic flexibility. The result is accurate, high-quality audio description files delivered in multiple formats—faster, smarter, and more reliably.
Discover the benefits of Stellar Automate
Why Use Stellar Automate?
Stellar Automate is built to help you move faster without compromising on quality. Whether you’re managing a single project or scaling up for global delivery, here’s why it makes a difference:
Increase productivity
Automate time-consuming tasks without sacrificing quality or control.
Smarter Workflows with AI
From transcription to translation to rendering—let AI do the heavy lifting.
Scalable & Flexible
Handle large volumes, complex workflows, and multiple languages with ease.
Fully Integratable
Trigger automation via folder watches, manual input, or API integration.
Explore the Pulse of Media Production
Testimonials
Discover what our clients have to say
Discover what our clients have to say
'We have worked with Yella Umbrella for several years on analysing and processing our extensive subtitle archive. As we move to a new streamlined system, we have integrated The Stellar Suite to support our growing content needs. We use Stellar to conform multiple languages in a single session, create subtitles, perform automated subtitle conversions, and retime existing subtitle files. These capabilities have allowed us to maintain high quality standards while improving efficiency. This balance between automation and editorial control is exactly what we need'
Vice President of Technical Operations, Global Technology at BBC Studios
“We wouldn’t have been able to complete this intricate AD project without the shared task capabilities in Stellar. It simplified version control, enabled real-time QC, and allowed feedback without endless file sharing. It also keeps assets secure since only the project is shared, not the high-res media files.”
CEO, Hear Say AD
At Vertala (TVT Media), 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.
CFO at Vertala (TVT Media)
At Broadcast Intelligence, we rely on Yella Umbrella’s Stellar Suite to handle both the creation of new subtitles and the conforming of existing subtitle files across diverse projects and clients. The platform allows us to deliver accurate, consistent subtitles efficiently, even under tight deadlines. Using Stellar has enabled us to uphold rigorous quality standards while managing increasing volumes of work. The Yella team has been an excellent partner throughout—knowledgeable, approachable, and quick to respond as our requirements evolve.
COO at Broadcast Intelligence
As a freelance translator, Stellar has revolutionized the way I work. Its intuitive design and powerful features have significantly reduced my project turnaround times.
Freelance translator at Copy2U
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