Open Arsenal

Every Word, Within Reach

LiveCaptioner is a modular, real-time captioning and multilingual communication platform designed to make spoken communication more accessible and inclusive. It converts live speech into readable captions, supports synchronized transcription, and enables translation across multiple languages. The platform accommodates conversations, meetings, presentations, live streams, video playback, and other compatible audio sources. With configurable caption displays, speaker identification, audio event descriptions, and adjustable presentation settings, LiveCaptioner helps users follow spoken communication in a way that suits their individual needs.

LiveCaptioner provides advanced communication capabilities through two-way conversation mode, live interpretation, and multilingual caption translation. Participants can view original speech alongside translated captions, select preferred languages, and use optional text-to-speech functionality to support spoken responses. Intelligent audio processing helps improve recognition under supported audio conditions, while intelligent caption assistance can suggest corrections, improve punctuation, identify ambiguous phrases, and maintain consistent terminology. Users retain control over AI-generated enhancements, with original transcription preserved for comparison and substantive corrections subject to human review.

Accessibility and personalization are central to LiveCaptioner’s design. Personal accessibility profiles allow users to configure caption appearance, language preferences, reading speed, contrast, and input methods for different environments. Caption accessibility intelligence can improve readability through adaptive segmentation, configurable highlighting, and optional simplified language representations. Mobile captioning, advanced session connectivity, and multi-device access extend these capabilities across compatible devices. Users can reconnect to active sessions, share captions with authorized participants, and maintain their preferred settings while prioritizing privacy and control over their information.

LiveCaptioner also supports transcript editing, searchable session history, caption export, and interoperability with compatible applications and caption formats. Its developer API enables authorized applications to access caption streams and integrate transcription and translation capabilities into other workflows. Caption quality and benchmarking tools can evaluate recognition accuracy, translation quality, processing latency, and delivery consistency using appropriate reference data. An extensible plugin ecosystem adds optional integrations for speech recognition providers, translation services, video conferencing, browser applications, streaming platforms, media players, and assistive technologies. Local-first processing, configurable data retention, secure session access, and flexible deployment options help users and organizations tailor LiveCaptioner to their accessibility, communication, and operational requirements.

This specification is released under the AGPL-3.0+ and is free to use with required Section 7 attribution. Organizations seeking attribution-free deployment may obtain a Specification Branding License, with fees based on use and deployment scope.