Subtitle Speaker Translator

This tool automates the creation of multilingual, speaker-labeled subtitles for video content. It transcribes dialogue in a source language, assigns segments to speakers, and translates captions into selected target languages. The output is time-aligned, platform-ready in SRT or VTT formats, or provided as structured JSON for further automation. It is designed for content creators, editors, educators, and localization teams seeking to publish accessible videos across languages while preserving speaker identity. Conceptually, it processes media in a pipeline: audio extraction, source-language transcription, diarization, translation, and subtitle formatting. The result enables viewers to follow dialogue with accurate timing and speaker cues in multiple languages, supporting reach and compliance with accessibility standards. Core value lies in combined transcription, diarization, and translation within a single workflow, reducing manual editing, synchronization drift, and formatting errors. Use cases include multilingual YouTube channels, international training videos, and internationalized lecture content. The tool supports common subtitle formats, UTF-8 encoding, and a scalable approach to long videos by chunking. It also provides quality checks and language-specific localization options to improve readability and user experience. By exporting per-language tracks, teams can rapidly publish parallel caption streams and synchronize them with platform metadata and metadata templates. This differentiator is the integrated end-to-end pipeline with speaker-aware translation, not just transcription or translation in isolation.