Class: RVideo::Tools::Mencoder

Inherits:
Object
  • Object
show all
Includes:
AbstractTool::InstanceMethods
Defined in:
lib/rvideo/tools/mencoder.rb

Instance Attribute Summary collapse

Attributes included from AbstractTool::InstanceMethods

#command, #options, #raw_result

Instance Method Summary collapse

Methods included from AbstractTool::InstanceMethods

#execute, #initialize, #interpolate_variables, #matched_variable

Instance Attribute Details

#audio_size ⇒ Object (readonly)

Returns the value of attribute audio_size.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def audio_size
  @audio_size
end

#bitrate ⇒ Object (readonly)

Returns the value of attribute bitrate.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def bitrate
  @bitrate
end

#fps ⇒ Object (readonly)

Returns the value of attribute fps.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def fps
  @fps
end

#frame ⇒ Object (readonly)

Returns the value of attribute frame.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def frame
  @frame
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def size
  @size
end

#time ⇒ Object (readonly)

Returns the value of attribute time.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def time
  @time
end

#video_size ⇒ Object (readonly)

Returns the value of attribute video_size.



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# File 'lib/rvideo/tools/mencoder.rb', line 6

def video_size
  @video_size
end

Instance Method Details

#original_fps ⇒ Object 



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# File 'lib/rvideo/tools/mencoder.rb', line 12

def original_fps
  inspect_original if @original.nil?
  if @original.fps
    "-r #{@original.fps}" 
  else
    ""
  end
end

#parse_result(result) ⇒ Object 



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# File 'lib/rvideo/tools/mencoder.rb', line 21

def parse_result(result)
  if m = /Exiting.*No output file specified/.match(result)
    raise TranscoderError::InvalidCommand, "no command passed to mencoder, or no output file specified"
  end
  
  if m = /Sorry, this file format is not recognized\/supported/.match(result)
    raise TranscoderError::InvalidFile, "unknown format"
  end
  
  if m = /Cannot open file\/device./.match(result)
    raise TranscoderError::InvalidFile, "I/O error"
  end
  
  if m = /File not found:$/.match(result)
    raise TranscoderError::InvalidFile, "I/O error"
  end
  
  video_details = result.match /Video stream:(.*)$/
  if video_details
    @bitrate = sanitary_match(/Video stream:\s*([0-9.]*)/, video_details[0])
    @video_size = sanitary_match(/size:\s*(\d*)\s*(\S*)/, video_details[0])
    @time = sanitary_match(/bytes\s*([0-9.]*)/, video_details[0])
    @frame = sanitary_match(/secs\s*(\d*)/, video_details[0])
    @fps = (@frame.to_f / @time.to_f).round_to(3)
  elsif result =~ /Video stream is mandatory/
    raise TranscoderError::InvalidFile, "Video stream required, and no video stream found"
  end
  
  audio_details = result.match /Audio stream:(.*)$/
  if audio_details
    @audio_size = sanitary_match(/size:\s*(\d*)\s*(\S*)/, audio_details[0])
  else
    @audio_size = 0
  end
  @size = (@video_size.to_i + @audio_size.to_i).to_s
end

#sanitary_match(regexp, string) ⇒ Object 



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# File 'lib/rvideo/tools/mencoder.rb', line 58

def sanitary_match(regexp, string)
  match = regexp.match(string)
  return match[1] if match
end

#tool_command ⇒ Object 



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# File 'lib/rvideo/tools/mencoder.rb', line 8

def tool_command
  'mencoder'
end