Class: FFSplitter::FFMpeg

Inherits:
Object
  • Object
show all
Defined in:
lib/ffsplitter/ffmpeg.rb

Constant Summary collapse

CODEC_OPTIONS = 
"-c copy -movflags faststart"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, output_directory = nil) ⇒ FFMpeg

Returns a new instance of FFMpeg.



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# File 'lib/ffsplitter/ffmpeg.rb', line 6

def initialize(filename, output_directory=nil)
  @filename = filename
  @output_directory = output_directory
  @runner = CommandRunner
end

Instance Attribute Details

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/ffsplitter/ffmpeg.rb', line 4

def filename
  @filename
end

#output_directory ⇒ Object

Returns the value of attribute output_directory.



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# File 'lib/ffsplitter/ffmpeg.rb', line 4

def output_directory
  @output_directory
end

#runner ⇒ Object

Returns the value of attribute runner.



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# File 'lib/ffsplitter/ffmpeg.rb', line 4

def runner
  @runner
end

Instance Method Details

#chapter_command(chapter) ⇒ Object 



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# File 'lib/ffsplitter/ffmpeg.rb', line 21

def chapter_command(chapter)
  output_file = File.expand_path(chapter.filename, output_directory)
  "ffmpeg -ss #{chapter.start_time} -i '#{filename}' -t #{chapter.duration} #{CODEC_OPTIONS} '#{output_file}.mp4'"
end

#encode(chapters) ⇒ Object 



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# File 'lib/ffsplitter/ffmpeg.rb', line 16

def encode(chapters)
  commands = chapters.collect { |c| chapter_command(c) }
  runner.run("#{commands.join(' && ')}")
end

#read_metadata ⇒ Object 



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# File 'lib/ffsplitter/ffmpeg.rb', line 12

def read_metadata
  runner.run("ffmpeg -i '#{filename}' -v quiet -f ffmetadata -")
end