It’s important to clarify that most officially distributed Korean movies are not legally available in “dual audio” (typically Korean + another language like Hindi, Tamil, or English) unless they are released by licensed local distributors. For example, some popular Korean films like Train to Busan , Parasite , or The Roundup have been officially dubbed or subbed in multiple languages on platforms like Netflix, Amazon Prime, or Disney+.
That said, if you come across websites or pirated copies labeled — here’s an honest review: Korean Movie Dual Audio