ニコニコ動画のflvをmp3に変換
#!/usr/bin/ruby require 'rubygems' require 'nicovideo' Nicovideo.new('自分のメアド', '自分のパスワード').login.watch(ARGV.first) {|v| File.open("#{ARGV.first}.flv", "wb") {|f| f.write v.flv } } and system "ffmpeg -y -i #{ARGV.first}.flv -acodec mp3 -ar 44100 -ab 192 #{ARGV.first}.mp3"