SubtitleAI uses advanced AI speech recognition to transcribe spoken audio in video files into text, then applies AI-powered translation to convert transcripts into target languages. It supports single or batch processing of local video files (e.g., MP4, MKV) and exports subtitles as SRT files or burns them directly into videos. Users configure API keys for speech-to-text and translation services, specify languages, and run simple CLI commands. With options for timestamp adjustments and subtitle styling, SubtitleAI streamlines subtitle creation and localization workflows for content creators, educators, and marketers, eliminating manual transcription and translation steps.

Subsvideo is an advanced online tool that enables users to create AI-generated captions for videos directly in their browsers. It's designed to provide unlimited captions without watermarks, registration requirements, and offers free export options. With support for over 35 languages, 80+ fonts, 25+ templates, and animations, it is capable of working with 4K resolutions. Its extensive customization features allow users to adapt the tool to their unique needs and preferences.