Professional Live Captioning Software

Line 21 delivers cutting-edge live captioning solutions that combine advanced technology with human expertise. With an industry-leading response time of 144 milliseconds, our platform ensures seamless real-time captioning across major streaming services including YouTube, Facebook, and Zoom.

Advanced Features

Our platform stands out with:

• Support for over 100 languages
• AI-powered proofreading system
• Professional CEA encoding
• Customizable display settings
• Robust integration options

Technical Excellence

Line 21 leverages state-of-the-art technology to provide:

• Real-time caption delivery
• Advanced speech recognition
• Multiple AI engine support
• Specialized glossary integration
• Context-aware processing

User Experience

We prioritize accessibility through:

• Intuitive controls
• Flexible display options
• Color contrast compliance
• Browser-based access
• Downloadable overlays

Professional Support

Our clients benefit from:

• Expert technical assistance
• Comprehensive documentation
• Regular updates
• Community support
• Dedicated success team

Output Flexibility

Choose from multiple export formats:

• Text files
• SRT format
• WebVTT format
• Multi-language transcripts

Line 21 continues to set industry standards in live captioning technology. Whether you’re running corporate events, live broadcasts, or international conferences, our platform delivers reliable, accurate, and accessible captioning solutions. By combining technological innovation with user-friendly features, Line 21 ensures professional-grade captioning is accessible to all who need it.

Join the growing number of organizations trusting Line 21 for their captioning needs and experience the difference that professional-grade live captioning can make for your audience.