mastodon-docker-playground/lib/paperclip/audio_transcoder.rb

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# frozen_string_literal: true
module Paperclip
class AudioTranscoder < Paperclip::Processor
def make
meta = ::Av.cli.identify(@file.path)
# {:length=>"0:00:02.14", :duration=>2.14, :audio_encode=>"mp3", :audio_bitrate=>"44100 Hz", :audio_channels=>"mono"}
if meta[:duration] > 60.0
raise Mastodon::ValidationError, "Audio uploads must be less than 60 seconds in length."
end
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final_file = Paperclip::Transcoder.make(file, options, attachment)
attachment.instance.file_file_name = 'media.mp4'
attachment.instance.file_content_type = 'video/mp4'
attachment.instance.type = MediaAttachment.types[:video]
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final_file
end
end
end