Created
February 19, 2013 18:42
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Convert .flac files to VBR mp3
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#!/Users/duncanbeevers/.rvm/rubies/ruby-1.9.3-p0/bin/ruby | |
filenames = ARGV | |
abort "Usage: flac2mp3 FLACFILE, ( FLACFILE, ... )" if filenames.length < 1 | |
require 'open3' | |
FIELD_NAMES = %w(TITLE ARTIST ALBUM TRACKNUMBER GENRE) | |
FIELDS = FIELD_NAMES.map { |f| "(?:#{Regexp.quote(f)})" }.join("|") | |
MATCHER = /^(#{FIELDS})=([^\n]+)\n$/ | |
filenames.each do |filename| | |
basename=File.basename(filename, File.extname(filename)) | |
metadata = {} | |
Open3.popen3("metaflac", "--export-tags-to=-", filename) do |_, stdout, _| | |
stdout.each_line do |s| | |
match = MATCHER.match(s) | |
if match | |
metadata[match[1].upcase] ||= match[2].gsub('"', '\"') | |
end | |
end | |
end | |
puts "Encoding #{basename}.mp3" | |
flac = [ "flac", "-sdc", filename ] | |
lame = [ "lame", "--silent", | |
"--alt-preset", "standard", | |
"--tt", metadata["TITLE"] || "", | |
"--ta", metadata["ARTIST"] || "", | |
"--tl", metadata["ALBUM"] || "", | |
"--tn", metadata["TRACKNUMBER"] || "", | |
"--tg", metadata["GENRE"] || "", | |
"-", "#{basename}.mp3" | |
] | |
Open3.pipeline flac, lame | |
end |
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