README.txt

概要はこのへんにあります。
http://info-student-laboratory.blogspot.com/2015/04/raspi2a-3ruby.html

agqr.rb

# -*- coding: utf-8 -*-
# record AGQR
# usage: use with crontab
# 29,59 * * * sleep 55; ruby agqr.rb

require 'yaml'

rtmpdump = '/usr/bin/rtmpdump'
ffmpeg = '/usr/bin/ffmpeg'
agqr_stream_url = 'rtmp://fms-base1.mitene.ad.jp/agqr/aandg22'

current = File.dirname(File.expand_path(__FILE__))
save_dir = "#{current}/data/"
schedule = "#{current}/schedule.yaml"
today = Time.now


schedule_yaml = YAML.load_file(schedule)
schedule_yaml.each do |program|

  program_wday = program['wday']

  is_next_day_program = false

  # appropriate wday
  h, m = program['time'].split(':').map(&:to_i)
  if h == 0 && m == 0
    # check next day's wday
    # if today.wday is 6 (Sat), next_wday is 0 (Sun)
    next_wday = today.wday == 6 ? 0 : today.wday + 1
    is_appropriate_wday = program_wday == next_wday
    is_next_day_program = true
  else
    # check today's wday
    is_appropriate_wday = program_wday == today.wday
  end

  # appropriate time
  if is_next_day_program
    # 日付を跨ぐので録音開始の日付が1日ずれる
    next_day = today + 60 * 60 * 24
    # today.day + 1 してたら 31 を超えるとTimeがエラー吐く
    program_start = Time.new(next_day.year, next_day.month, next_day.day, h, m, 0)
  else
    program_start = Time.new(today.year, today.month, today.day, h, m, 0)
  end

  is_appropriate_time = (program_start - today).abs < 120

  length = program['length'] * 60 + 10

  if is_appropriate_wday && is_appropriate_time
    title = (program['title'].to_s + '_' + today.strftime('%Y%m%d')).gsub(' ','')
    flv_path = "#{save_dir}/flv/#{title}.flv"
    rec_command = "#{rtmpdump} -r #{agqr_stream_url} --live -B #{length} -o #{flv_path} >/dev/null 2>&1"
    system rec_command

    movie = program['movie']
    if movie == 0
      # encode flv -> m4a
      m4a_path = "#{save_dir}/mp3/#{title}.m4a"
      m4a_encode_command = "#{ffmpeg} -y -i #{flv_path} -vn -acodec copy #{m4a_path} >/dev/null 2>&1"
      system m4a_encode_command

      # encode m4a -> mp3
      mp3_path = "#{save_dir}/mp3/#{title}.mp3"
      mp3_encode_command = "#{ffmpeg} -i #{m4a_path} #{mp3_path} >/dev/null 2>&1"
      system mp3_encode_command

      # delete m4a
      system "rm -rf #{m4a_path}"
    end
  end
end

schedule_201504.yaml

- title: ladygo_mon
  wday: 1
  time: '20:00'
  length: 60
  movie: 1
- title: ladygo_tue
  wday: 2
  time: '20:00'
  length: 60
  movie: 1
- title: ladygo_wed
  wday: 3
  time: '20:00'
  length: 60
  movie: 1
- title: ladygo_thu
  wday: 4
  time: '20:00'
  length: 60
  movie: 1
- title: ladygo_fri
  wday: 5
  time: '20:00'
  length: 60
  movie: 1
- title: tyoroi
  wday: 3
  time: '23:00'
  length: 30
  movie: 1
- title: suzakinishi
  wday: 3
  time: '1:00'
  length: 30
  movie: 0
- title: hitokana
  wday: 水
  time: '21:00'
  length: 60
  movie: 0
- title: adlib
  wday: 0
  time: '1:00'
  length: 30
  movie: 0
- title: remake
  time: '1:30'
  wday: 2
  length: 30
  movie: 0
- title: five_stars_mon
  wday: 1
  time: '19:30'
  length: 30
  movie: 1
- title: five_stars_tue
  wday: 2
  time: '19:30'
  length: 30
  movie: 1
- title: five_stars_wed
  wday: 3
  time: '19:30'
  length: 30
  movie: 1
- title: five_stars_thu
  wday: 4
  time: '19:30'
  length: 30
  movie: 1
- title: five_stars_fri
  wday: 5
  time: '19:30'
  length: 30
  movie: 1