Why I built a 100% private, offline AI subtitle generator for VLC & MPV

Hey Indie Hackers! 👋

​Most live transcription and subtitle tools force you into monthly cloud API subscriptions and stream your private audio over external servers. I wanted a lightweight solution that runs completely on my own machine with zero data leaving the desktop.

​So I built Live Caption Player.

​How it works:

• ​Local Speech Recognition: Powered by the Vosk offline neural network acoustic model (~45MB matrix running directly on local CPU).

• ​Native Interface: Built with PySide6 (Qt6 Python) for high-performance timeline syncing with VLC and MPV media players.

• ​Privacy First: 100% private with no cloud servers or background data logging.

​We just launched our web platform supporting monthly subscriptions, direct Windows installers, and lifetime license redemptions.

​Check out the page at https://caption.stackbuildco.com and let me know what you think of the approach!