SubStreamEdu

SubStreamEdu is an immersive English language learning platform that transforms passive video and audio consumption into an active, engaging experience. Users can upload movies or videos directly from their computers to watch locally in the browser without any server-side storage, ensuring privacy and smooth playback. Additionally, learners can stream YouTube videos or study song lyrics and other texts. While watching or reading, users highlight words or phrases simply by selecting the text, similar to copying, which instantly provides translations, definitions, and phonetic transcriptions. These highlighted items are automatically saved into a personal, unified dictionary, allowing learners to build their vocabulary naturally over time. To reinforce retention, the platform incorporates a built-in spaced repetition system inspired by Anki, which generates flashcards enriched with pronunciation audio and integrates Youglish examples so learners can hear how native speakers use words and phrases in authentic contexts. SubStreamEdu also offers a pronunciation practice feature that lets users repeat lines multiple times to mimic native speech and improve their speaking skills. By combining real-world content, interactive subtitles, instant translations, personalized review tools, and pronunciation exercises all within a browser-based interface, SubStreamEdu makes language acquisition efficient, enjoyable, and deeply contextual without requiring users to juggle multiple disconnected tools. This seamless integration of immersive media with smart learning technology positions SubStreamEdu as a uniquely effective solution for learners striving to master English naturally through content they love.