54 lines
1.5 KiB
Bash
54 lines
1.5 KiB
Bash
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#!/bin/bash
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function die()
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{
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printf '%s\n' "$1" >&2
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exit "${2-1}"
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}
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input_file="$1"
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input_directory="$2"
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output_directory="$3"
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tmp_directory=/data/tmp
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output_file="`echo "$input_file" | sed -E "s#^$input_directory(.+)\\.[a-z0-9]+\\$#$output_directory\\1.mp3#g"`"
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directory="`dirname "$output_file"`"
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if [ ! -d "$directory" ] ; then
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echo "New Directory: \"$directory\""
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mkdir -p "$directory" || die "Could not create directory \"$directory\"."
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fi
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transcode=false
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if [ ! -f "$output_file" ] ; then
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echo "New MP3: \"$output_file\""
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transcode=true
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elif [ "$input_file" -nt "$output_file" ] ; then
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echo "Input file is newer: \"$output_file\""
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transcode=true
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fi
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if [ "$transcode" = true ] ; then
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input_type="`file -b --mime-type "$input_file"`"
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case "$input_type" in
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audio/flac)
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tmp_file="$tmp_directory/`basename "$output_file"`"
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echo "Transcoding MP3..."
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ffmpeg -hide_banner -loglevel fatal -i "$input_file" -y -b:a 320k -qscale:a 2 -id3v2_version 3 -f mp3 "$tmp_file" || die "Failed to transcode to \"$tmp_file\"."
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mv -f "$tmp_file" "$output_file" || die "Could not move file to \"$output_file\"."
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;;
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application/octet-stream)
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echo "Warning: Assuming \"$input_file\" is a MP3 file."
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;&
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audio/mpeg)
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echo "Copying MP3..."
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cp -f "$input_file" "$output_file"
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;;
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*)
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die "Unsupported input type $input_type (\"$input_file\")"
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;;
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esac
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fi
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