LangScribe is a browser player for studying a language from video files you already have. Import SRT, VTT or ASS subtitles, then use dual subtitles, line navigation, an A-B loop and word lookup with a vocabulary list. Subtitles export as SRT.
AI subtitles and AI translation are also available and use credits (about 20 credits for 10 minutes of audio). Those features send extracted audio chunks for processing instead of uploading the whole film, and they need a Google sign-in. Playing local files needs no account.
Learners want to study with videos they already have. LangScribe is a browser player for local files, with imported or AI-generated subtitles, dual subtitles, cue navigation and an A-B loop. Local playback keeps the video on your device.