Extract and transliterate burned-in video subtitles to pinyin in-browser

Extract and transliterate burned-in video subtitles to pinyin in-browser targets a $12.0B = 150M active language learners x $80 ARPU/year. Assumes global adult learners (paid and freemium) willing to spend on study tools or subscriptions. total addressable market with medium saturation and a year-over-year growth rate of 8-12% yearly growth in online language-learning spend and microlearning tools, driven by app subscriptions and supplementary tools.

Key trends driving demand: Short-form video proliferation -- more burned-in subtitles across platforms increases the workload for learners and creates demand for extraction tools.; Edge/browser compute and WebAssembly -- enables low-latency OCR and transliteration in-browser without heavy server costs.; Microlearning habit formation -- daily short sessions make real-time subtitle capture a high-frequency use case and monetizable habit.; Travel and immersion resume -- learners planning travel or immersion seek native content and practical study flows, raising willingness to adopt helpers..