Wikipedia
BookBox
BookBox, a social enterprise located in Pondicherry, India, created ‘AniBooks’, animated stories for children with the narration appearing on-screen as Same Language Subtitles (SLS). Every word is highlighted in exact timing with the audio narration, thus strengthening reading skills, automatically and subconsciously. BookBox has their videos on their YouTube channel with over 45 stories in 40 languages.
SLS is a pedagogically sound and proven technique and has won many international awards alongside their partner non-profit, PlanetRead created by Brij Kothari, which has also been implemented widely on film song based TV programs in India.