The second audio track is flagged as "Commentary" or "Visual Impaired." Fix: Use MKVToolNix (or ffmpeg ) to change the track flags. Remove "commentary" flag and set language to "hin" or "spa".
This is the most critical component for many international viewers. means the MKV or MP4 file contains two or more audio tracks—typically: world war z brrip 720p dual audio work
Dual audio files allow viewers to switch between two different languages—typically the original English track and a dubbed version (such as Hindi, Spanish, or French). The second audio track is flagged as "Commentary"