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YuruToot/lib/paperclip/gif_transcoder.rb

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# frozen_string_literal: true
module Paperclip
# This transcoder is only to be used for the MediaAttachment model
# to convert animated gifs to webm
class GifTranscoder < Paperclip::Processor
def make
return File.open(@file.path) unless needs_convert?
final_file = Paperclip::Transcoder.make(file, options, attachment)
attachment.instance.file_file_name = File.basename(attachment.instance.file_file_name, '.*') + '.mp4'
attachment.instance.file_content_type = 'video/mp4'
attachment.instance.type = MediaAttachment.types[:gifv]
final_file
end
private
def needs_convert?
num_frames = identify('-format %n :file', file: file.path).to_i
options[:style] == :original && num_frames > 1
end
end
end