Class: EnMasse::Dragonfly::FFMPEG::Encoder

Inherits:
Object
  • Object
show all
Includes:
Dragonfly::Configurable
Defined in:
lib/dragonfly-ffmpeg/encoder.rb,
lib/dragonfly-ffmpeg/encoder/profile.rb

Defined Under Namespace

Classes: Profile

Instance Method Summary collapse

Instance Method Details

#encode(temp_object, format, profile = :html5, options = {}) ⇒ Object

Encodes a Dragonfly::TempObject with the given format.

An optional profile may be specified by passing a symbol in as the optional profile parameter. Profiles are defined by the configurable attribute ‘encoder_profiles’ - by default one profile is defined for major web formats, :html5.

Raises:



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# File 'lib/dragonfly-ffmpeg/encoder.rb', line 77

def encode(temp_object, format, profile = :html5, options = {})
  options[:meta] = {} unless options[:meta]
  format = format.to_sym

  original_basename = File.basename(temp_object.path, '.*')
  
  raise UnsupportedFormat, "Format not supported - #{format}" unless supported_format?(format)
  unless profile.is_a?(Profile)
    raise UnknownEncoderProfile unless profile_defined?(format, profile.to_sym)
    profile = get_profile(format, profile.to_sym)
  end
  
  options.merge!(profile.encoding_options)
  
  origin = ::FFMPEG::Movie.new(temp_object.path)
  tempfile = new_tempfile(format, original_basename)
  transcoded_file = origin.transcode(tempfile.path, options)
  
  if(format.to_s == 'mp4' && `qt-faststart`)
    `qt-faststart #{transcoded_file.path} #{transcoded_file.path}.tmp.mp4`
    `mv #{transcoded_file.path}.tmp.mp4 #{transcoded_file.path}`
  end
  
  content = ::Dragonfly::TempObject.new(File.new(transcoded_file.path))
  meta = {
      :name => (original_basename + ".#{format}"),
      :format => format,
      :ext => File.extname(transcoded_file.path)
  }.merge(options[:meta])
  
  [ content, meta ]
end