puyopuyotetr.is/lib/paperclip/video_transcoder.rb

# frozen_string_literal: true

module Paperclip
  # This transcoder is only to be used for the MediaAttachment model
  # to check when uploaded videos are actually gifv's
  class VideoTranscoder < Paperclip::Processor
    def make
      meta = ::Av.cli.identify(@file.path)

      attachment.instance.type = MediaAttachment.types[:gifv] unless meta[:audio_encode]
      options[:format] = File.extname(attachment.instance.file_file_name)[1..-1] if options[:keep_same_format]

      Paperclip::Transcoder.make(file, options, attachment)
    end
  end
end