I would like to add multiple mp3 files to an mp4 file. For adding a single mp3 to an mp4, I used this command with success:
"-i /path/to/mp4File -i /path/to/soundmp3File -codec copy -shortest path/to/output/fileWithSound"
But I'm stuck with adding another mp3. I tried this, but it didn't work:
"-i /path/to/mp4File -i /path/to/soundmp3File1 -i path/to/soundmp3File2 -codec copy -shortest path/to/output/fileWithSounds"
How can I make it work with multiple audio files?