I have an .mkv
video file with ITA and ENG audio tracks. ITA is the main track and I need to select ENG to listen in English. Even with full volume, I couldn't understand it properly so I used the following FFMPEG command to double the sound
ffmpeg -i input.mkv -filter:a "volume=2.0" output.mkv
But in the output file, ENG audio track is missing and only ITA is available. I am trying to double the volume of the ENG audio track and won't mind if the ITA one goes missing. Can someone help me with right FFMPEG command ? Thanks
PS: I even tried ffmpeg -i input.mkv -filter:a:1 "volume=2.0" output-vol2x.mkv
based on a friend's suggestion without luck.
Add -map 0
after your input file to allow all streams to output.