Older dual audio rips often suffered from "sync drift" where the dubbed audio didn't match the lip movements. Updated versions fix these timing issues.
Instead of having two different versions of the film, one high-quality MKV or MP4 file contains both audio streams, saving hard drive space. What Does "Updated" Mean? Older dual audio rips often suffered from "sync
Many fans use dual audio to help learn a new language by toggling between their native tongue and the target language while following a familiar story. Older dual audio rips often suffered from "sync