#!/usr/bin/env bash set -u error() { echo >&2 "error: $*" exit 1 } command -v ffmpeg > /dev/null || error "ffmpeg command not found!" cd "$(dirname "${BASH_SOURCE[0]}")" || error "could not change directory!" ffmpeg_cmd() { ffmpeg -y "$@" 2> /dev/null } # tag() { metadata="$1" && shift input="$1" && shift output="$1" && shift if [[ ! -f "$output" ]]; then echo "tagging $output from $input with $metadata" ffmpeg_cmd -i "$input" -f ffmetadata -i "$metadata" -c copy -map_metadata 1 "$output" || error "could not tag $output" fi } # generate() { input="$1" && shift output="$1" && shift if [[ ! -f "$output" ]]; then echo "generating $output from $input" ffmpeg_cmd -i "$input" -vn "$@" "$output" || error "could not generate $output" fi } # Generate sample 1 generate s1.flac s1-mono.flac -ac 1 -acodec flac generate s1.flac s1-mono.wav -ac 1 generate s1.flac s1-mono.m4a -ac 1 -acodec aac generate s1.flac s1-mono.mp3 -ac 1 -acodec libmp3lame generate s1.flac s1-mono.ogg -ac 1 -acodec libvorbis generate s1.flac s1-stereo.flac -ac 2 -acodec flac generate s1.flac s1-stereo.wav -ac 2 generate s1.flac s1-stereo.m4a -ac 2 -acodec aac generate s1.flac s1-stereo.mp3 -ac 2 -acodec libmp3lame generate s1.flac s1-stereo.ogg -ac 2 -acodec libvorbis generate s1.flac s1-jointstereo.mp3 -ac 2 -acodec libmp3lame -joint_stereo 1 # Generate sample 1 +/-12dB generate s1.flac s1-mono-12.flac -ac 1 -acodec flac -af volume=-12dB generate s1.flac s1-stereo-12.flac -ac 2 -acodec flac -af volume=-12dB generate s1.flac s1-mono-12.mp3 -ac 1 -acodec libmp3lame -af volume=-12dB generate s1.flac s1-stereo-12.mp3 -ac 2 -acodec libmp3lame -af volume=-12dB generate s1.flac s1-mono+12.flac -ac 1 -acodec flac -af volume=+12dB generate s1.flac s1-stereo+12.flac -ac 2 -acodec flac -af volume=+12dB generate s1.flac s1-mono+12.mp3 -ac 1 -acodec libmp3lame -af volume=+12dB generate s1.flac s1-stereo+12.mp3 -ac 2 -acodec libmp3lame -af volume=+12dB # Generate sample 1 large if [[ ! -f s1-large.flac ]]; then echo "generating s1-large.flac from s1.flac" ffmpeg_cmd -stream_loop -1 -t $((3600 * 2)) -i s1.flac -vn s1-large.flac fi # Generate sample 2 generate s2.flac s2-mono.flac -ac 1 -acodec flac generate s2.flac s2-mono.m4a -ac 1 -acodec aac generate s2.flac s2-mono.mp3 -ac 1 -acodec libmp3lame generate s2.flac s2-mono.ogg -ac 1 -acodec libvorbis generate s2.flac s2-stereo.flac -ac 2 -acodec flac generate s2.flac s2-stereo.m4a -ac 2 -acodec aac generate s2.flac s2-stereo.mp3 -ac 2 -acodec libmp3lame generate s2.flac s2-stereo.ogg -ac 2 -acodec libvorbis generate s2.flac s2-jointstereo.mp3 -ac 2 -acodec libmp3lame -joint_stereo 1 # Generate sample 3 generate s3.flac s3-stereo.flac -ac 2 -acodec flac generate s3.flac s3-stereo.m4a -ac 2 -acodec aac generate s3.flac s3-stereo.mp3 -ac 2 -acodec libmp3lame generate s3.flac s3-stereo.ogg -ac 2 -acodec libvorbis # Tag sample 1 tag metadata.txt s1-mono.flac s1-mono-tagged.flac tag metadata.txt s1-mono.wav s1-mono-tagged.wav tag metadata.txt s1-mono.m4a s1-mono-tagged.m4a tag metadata.txt s1-mono.mp3 s1-mono-tagged.mp3 tag metadata.txt s1-mono.ogg s1-mono-tagged.ogg tag metadata.txt s1-stereo.flac s1-stereo-tagged.flac tag metadata.txt s1-stereo.wav s1-stereo-tagged.wav tag metadata.txt s1-stereo.m4a s1-stereo-tagged.m4a tag metadata.txt s1-stereo.mp3 s1-stereo-tagged.mp3 tag metadata.txt s1-stereo.ogg s1-stereo-tagged.ogg tag metadata.txt s1-jointstereo.mp3 s1-jointstereo-tagged.mp3 # Tag utf8 sample 1 tag metadata-utf8.txt s1-mono.flac s1-mono-tagged-utf8.flac tag metadata-utf8.txt s1-mono.wav s1-mono-tagged-utf8.wav tag metadata-utf8.txt s1-mono.m4a s1-mono-tagged-utf8.m4a tag metadata-utf8.txt s1-mono.mp3 s1-mono-tagged-utf8.mp3 tag metadata-utf8.txt s1-mono.ogg s1-mono-tagged-utf8.ogg tag metadata-utf8.txt s1-stereo.flac s1-stereo-tagged-utf8.flac tag metadata-utf8.txt s1-stereo.wav s1-stereo-tagged-utf8.wav tag metadata-utf8.txt s1-stereo.m4a s1-stereo-tagged-utf8.m4a tag metadata-utf8.txt s1-stereo.mp3 s1-stereo-tagged-utf8.mp3 tag metadata-utf8.txt s1-stereo.ogg s1-stereo-tagged-utf8.ogg tag metadata-utf8.txt s1-jointstereo.mp3 s1-jointstereo-tagged-utf8.mp3 # Extension less files cp s1-stereo.ogg s1-stereo cp s1-stereo-tagged.ogg s1-stereo-tagged cp s1-stereo-tagged-utf8.ogg s1-stereo-tagged-utf8