It allows multiple people in the same household to enjoy the movie in their preferred language.
When looking for a high-quality copy of the film, look for these standard encoding specifications to ensure smooth playback: 10000 Bc Dual Audio 720p
: .MKV (most common for multi-audio tracks) or .MP4 Resolution : 1280 x 720 pixels Audio Channels : AAC 2.0 or AC3 5.1 surround sound Video Codec : x264 or x265 (HEVC) How to Play Dual Audio Files It allows multiple people in the same household