50 lines
1.7 KiB
Ruby
Executable File
50 lines
1.7 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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# encoding: utf-8
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require File.expand_path '../helper.rb', $0
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doc = <<-DOC.gsub '__FILE__', File.basename($0)
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Do simple datamoshing.
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Usage:
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__FILE__ <infile> [-s <start> --decap --raw] -o <outfile> [--debug]
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__FILE__ -h | --help
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Options:
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-o <outfile> Set output file name.
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-s <start> Set begining position of datamoshing as sec [default: 0].
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--raw Keep output as no-keyframe avi [default: false].
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--decap Remain datamoshed frames only [default: false].
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--debug Flag for debugging [default: false].
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-h --help Show this screen.
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DOC
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begin
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options = Docopt::docopt doc
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mktmpdir(options['--debug']) do |tmpdir|
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cmd = Cocaine::CommandLine.new 'ffmpeg', '-i :infile -c:v mpeg4 -y -q:v 0 -an :outfile'
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infile = options['<infile>']
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avifile = tmpdir.join('mpeg4.avi')
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cmd.run infile: infile, outfile: avifile.to_s
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cmd = Cocaine::CommandLine.new 'ffmpeg', '-i :infile 2>&1', :expected_outcodes => [0, 1]
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info = cmd.run infile: avifile.to_s
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fps = (info =~ /, ([\.\d]*) fp/) ? $1 : 24
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start_at = (fps.to_f * options['-s'].to_f).to_i
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a = AviGlitch.open avifile
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datamoshed = a.frames[start_at..-1].to_avi.remove_all_keyframes!
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if !options['--decap']
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base = a.frames[0..start_at].mutate_keyframes_into_deltaframes!
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datamoshed = (base.concat datamoshed.frames).to_avi
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end
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glitchfile = tmpdir.join 'glitch.avi'
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datamoshed.output glitchfile
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if options['--raw']
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cmd = Cocaine::CommandLine.new 'cp', ':infile :outfile'
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else
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cmd = Cocaine::CommandLine.new 'ffmpeg', '-i :infile -an -q:v 0 :outfile'
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end
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cmd.run infile: glitchfile.to_s, outfile: options['-o']
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end
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rescue Docopt::Exit => e
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puts e.message
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end
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