While there isn't a single academic paper with the exact title "mkv movies dual audio hollywood 2021," there is significant scholarly research from 2021–2026 covering the technical and cultural components of your query, such as dual-stream audio encoding, Hollywood localization, and the MKV container format. Technical Research on Video and Dual Audio (2021–2026)
VLC Media Player: The most reliable tool. Simply right-click the video while it’s playing, go to Audio > Audio Track, and select your preferred language. mkv movies dual audio hollywood 2021