For The Dark Mod, reduce some player footstep sound volumes

README.md

How to reduce TDM player footstep sound volumes

Written with Linux in mind.

The following shows how to reduce the volumes of metal and water player footstep sounds.

Extract the footstep sounds

The player footstep sound files are in tdm_sound_sfx02.pk4 (ZIP file).

List player footstep sound files:

unzip -l tdm_sound_sfx02.pk4 'sound/sfx/movement/footsteps/player/*'

Extract player footstep sound files:

unzip tdm_sound_sfx02.pk4 'sound/sfx/movement/footsteps/player/*' -d footstep_sounds

Use FFmpeg Bash script to reduce the volumes

See reduce-footstep-volume.bash file below.

1. Change to footstep_sounds directory (or the directory where the files were extracted to).
2. Run the reduce-footstep-volume.bash script.
3. Copy/Move the resulting output sound files to <darkmod dir>/sound/sfx/movement/footsteps/player.

Example:

cd footstep_sounds
./reduce-footstep-volume.bash
mv -i output/sound ../

Resulting output sound files

sound
└── sfx
    └── movement
        └── footsteps
            └── player
                ├── metal_jump_land01.ogg
                ├── metal_jump_land02.ogg
                ├── metal_jump_land03.ogg
                ├── metal_jump_land04.ogg
                ├── metal_run01.ogg
                ├── metal_run02.ogg
                ├── metal_run03.ogg
                ├── metal_run04.ogg
                ├── water_crouch_run01.ogg
                ├── water_crouch_run02.ogg
                ├── water_crouch_run03.ogg
                ├── water_crouch_run04.ogg
                ├── water_jump_land01.ogg
                ├── water_jump_land02.ogg
                ├── water_jump_land03.ogg
                ├── water_jump_land04.ogg
                ├── water_run01.ogg
                ├── water_run02.ogg
                ├── water_run03.ogg
                ├── water_run04.ogg
                └── water_run05.ogg

reduce-footstep-volume.bash

#!/usr/bin/env bash
set -eu

IN_DIR='sound/sfx/movement/footsteps/player'
mkdir -p output/"$IN_DIR"

for i in "$IN_DIR"/metal_run*;        do ffmpeg -i "$i" -filter:a 'volume=-4dB'  output/"$i"; done
for i in "$IN_DIR"/metal_jump*;       do ffmpeg -i "$i" -filter:a 'volume=-10dB' output/"$i"; done

for i in "$IN_DIR"/water_run*;        do ffmpeg -i "$i" -filter:a 'volume=-10dB' output/"$i"; done
for i in "$IN_DIR"/water_crouch_run*; do ffmpeg -i "$i" -filter:a 'volume=-10dB' output/"$i"; done
for i in "$IN_DIR"/water_jump*;       do ffmpeg -i "$i" -filter:a 'volume=-5dB'  output/"$i"; done