This script takes a single input file and
- Reduces the volume of the third audio-track in the file by half
- Writes the reduced volume track into
l
- Mixes both the second audio-track and the lowered
l
-track together and stores them intoa
- Maps the original video to be the first track
- Adds the newly mixed audio-track
a
as the sole audio track - Enables pass-through for the video-track
- Configures the mixed audio-track to be AAC at 192kbit/s