gistfile1.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'scissor'
require 'scissor-video'
require "scissor/echonest"
require 'yaml'

config = YAML.load(File.open('config.yaml'))
Scissor.workspace = './workspace' + $$.to_s
Scissor.echonest_api_key = config['api_key']

input_video = 'macaroni.flv'
#input_video = 'afterhours.flv'
video_chunk = ScissorVideo(input_video)
audio_chunk = video_chunk.strip_audio
beats = audio_chunk.beats
# for debug
YAML.dump beats, File.open("#{Scissor.workspace}/beats.yaml", 'w')

require 'logger'
Scissor.logger = Logger.new("#{Scissor.workspace}/log.txt")
Scissor.logger.level = Logger::DEBUG

sorted_beats = beats.sort_by {|b| b.duration}
# not work yet...
#Scissor.join(sorted_beats).to_file("#{Scissor.workspace}/sorted.wav")

module Scissor
  class Chunk
    def to_videochunk(video)
      v = ScissorVideo()
      v.fragments[0] = Scissor::Fragment.new(
        video,
        @fragments[0].start,
        @fragments[0].duration)
      v
    end
  end
end

\sorted_beats.inject(ScissorVideo()) do |scissor, chunk|
  scissor + chunk.to_videochunk(input_video)
end.to_file("#{Scissor.workspace}/out.avi",
            :overwrite => true,
            :save_workfiles => true)