48 lines
1.7 KiB
Ruby
Executable File
48 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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Glitch with Huffyuv codec.
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Usage:
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__FILE__ <infile> [-s <n> -d <n> -h <n> -r <n-m>] -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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-d <n> Set video duration by seconds. It is preferred to be less than 60s. [default: 30].
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-r <n-m> Set range in height of the glitch effect. It should be between 0 and 1. Or you can set increase-decrease value like "0.1-0.9" [default: 0.99].
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-s <n> Set start position of the video by seconds.
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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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other_options = ''
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other_options += ' -t ' + options['-d']
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other_options += ' -ss ' + options['-s'] if options['-s']
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cmd = Cocaine::CommandLine.new 'ffmpeg', '-i :infile %s -c:v huffyuv -pix_fmt yuv422p -y -q:v 0 -an :outfile' % other_options
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huffyuvfile = tmpdir.join('huffyuv.avi')
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cmd.run infile: options['<infile>'], outfile: huffyuvfile.to_s
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a = AviGlitch.open huffyuvfile
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l = a.frames.size.to_f
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pos = options['-r'].split '-'
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pos[1] = pos[0] if pos[1].nil?
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sp, ep = pos.collect {|p| p.to_f }
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a.glitch_with_index do |f, i|
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p = i / l
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ratio = (ep - sp) * p + sp
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f[0, (1 - ratio) * f.size]
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end
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glitchfile = tmpdir.join 'glitch.avi'
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a.output glitchfile
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cmd = Cocaine::CommandLine.new 'avconv', '-i :infile -an -q:v 0 -c:v mpeg4 :outfile'
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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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