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Convert between subtitle,
caption and script files

Stellar Convert is your go-to solution for fast, accurate, and intelligent conversion of subtitles, captions, scripts, audio description and dubbing files—across all languages, formats, and delivery platforms. Built for the demands of media localization and accessibility, Stellar Convert eliminates the headaches of manual formatting, syncing, and quality control.

Whether you’re preparing content for streaming, broadcast, DVD, or social platforms, Stellar Convert ensures your files are in the right format, perfectly timed, and ready to go—every time.

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Convert between subtitle, caption and script files

Stellar Convert – Powerful, Precise, and Effortless File Conversion

Precision Conversion for Any Format, Any Platform

Instantly ensure your files are in the right format, perfectly synced, and meet industry standards, eliminating the need for time-consuming manual adjustments.

Scan for Critical Issues

Stellar thoroughly scans your files for issues like timing errors, spelling and invalid characters, formatting problems, and missing content. It instantly generates detailed error reports, so you can address issues before they become problems.

Customize Your Quality Control

Tailor your checks to match the specific needs of your project. Whether it’s line length, timing accuracy or speaker identification, Stellar lets you focus on what matters most.

Dramatically Reduce Manual QC

Say goodbye to extensive manual reviews. Stellar’s automation dramatically cuts down on the number of assets requiring human inspection, saving time and resources.

Minimize Rejections and Re-Deliveries

With fewer errors and faster turnarounds, you’ll see a significant reduction in file rejections and costly re-deliveries, making your workflow more efficient than ever.

Stellar Convert: Powerful, Precise, and Effortless File Conversion

Watch our comprehensive video to see how Stellar can transform your media management from inception to delivery. Discover the power of integrated workflows.

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Effortlessly Convert Between All Subtitle and Caption File Formats with Stellar

Stellar makes it simple to convert between any subtitle and caption file format, ensuring your content is ready for every platform and delivery method. Whether you’re working with text-based files or need image-based subtitles for DVD/BD, Stellar has you covered.

With Stellar, converting subtitles and captions is fast, flexible, and hassle-free—helping you deliver content that’s perfectly formatted for any platform.

Discover our flexible pricing model
Key features include:
Seamless File Format Conversion

Easily convert between all major subtitle and caption formats to meet the needs of different platforms and delivery requirements.

Image-Based Subtitles for DVD/BD

Generate image-based subtitles for DVD and Blu-ray formats, ensuring compatibility with physical media standards.

Burn Captions/Subtitles with Ease

Effortlessly render captions or subtitles directly onto your video, ensuring a smooth, professional finish every time.

Encode to broadcast formats

Create broadcast ready content in DVB, Teletext and CC 608/708 formats.

Wide Format Support

Import and work with all major subtitle and caption file formats, making compatibility issues a thing of the past.

Match Resolution & Frame Rate

Render subtitles on video while maintaining the exact resolution and frame rate for a flawless viewing experience.

Multiple Video Presets

Choose from various video presets, including popular options like h.264 and ProRes, to ensure optimal quality for your project.

Full Industry Standard Support

Stellar supports all industry-standard formats, providing a versatile solution for any project, no matter the format.

Full Control Over Styling, Fonts & Positioning

Use style profiles to customize subtitle styling and positioning to match your brand or project’s unique look and feel.

Transforming your localization workflow

Stellar Convert doesn’t just transform files—it transforms workflows. By automating complex tasks and ensuring precision at every step, it helps media professionals save time, reduce errors, and deliver with confidence across any platform or format.

Benefits include:
Save Time

Automated conversions and QC reduce manual effort and speed up your delivery pipeline.

Lower Costs

Fewer manual checks mean less time spent on revisions and re-deliveries.

Improve Accuracy

Built-in error detection minimizes the risk of rejections from clients or platforms.

Work Smarter

Eliminate repetitive formatting tasks and focus on creative, high-value work. Share Style Profiles automatically to reduce human errors.

Seamless Workflow Integration

Use Stellar Convert on its own or as part of the full Stellar Suite for a streamlined production environment.

Stellar insights

Explore the Pulse of Media Production

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Testimonials

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'

Adam Jakubowski

Vice President of Technical Operations, Global Technology at BBC Studios

stellar suite

“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.”

Cara Edney

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.

Hayden Punter

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.

Jake Robbins

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.

Nathalie Delacroix

Freelance translator at Copy2U

Contact us

Email
sales@yellaumbrella.tv
Phone
Yella Umbrella Office
+44 1223911778
Office

Aarschotsestraat 87,
1800 Vilvoorde