Language immersion extension · Fluidity family
Learn languages through videos
Explore Netflix and YouTube captions, local video files, and supported HTML5 players with interactive Study and Gloss tracks.
Walk the dialogue
Search Transcript, explore Frequency, and return to Kept lines. Z goes back, X replays, V moves ahead, P pauses each line, and − / = changes speed. Space stays with the host player. Captions depend on available tracks.
Bring your own files
Local video accepts a browser-playable file with SRT/VTT tracks. Explicit capture can keep a frame and audio locally; the full video is not saved. For another HTML5 player, activate video tools in the popup and select a readable text track or subtitle file. This does not provide universal streaming or DRM access.