ffmpeg -i video_720p.mkv -i hindi_audio.aac -i english_audio.aac \ -map 0:v -map 1:a -map 2:a \ -c:v copy -c:a copy \ -metadata:s:a:0 language=hin -metadata:s:a:1 language=eng \ output_dualaudio.mkv
Use cases for such a release: archival viewing with reasonable quality, sharing where full Blu-ray quality is unnecessary or bandwidth-limited, or situations needing separate audio tracks (subtitling, dubbing, or creating custom video/audio merges). verticallimit2000720pbrriphindidualaudio full