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barek2k2/transcoder.rake

Created October 28, 2017 10:38
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transcoder
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transcoder.rake
def generate_transcodes
if !self.is_transcoded? && self.attachment.present?
directory = "#{Rails.root}"
FileUtils.rm_r "#{Rails.root}/transcodes/" if File.exists?("#{directory}/transcodes")
Dir.mkdir("#{directory}/transcodes")
original_url = self.attachment.url.sub("https://s3-ap-southeast-1.amazonaws.com/popcorn-vod/", "").split("?").first
original_name = original_url.split("/").last.sub(".mp4", "")
s3 = AWS::S3.new(
:access_key_id => ENV["AWS_KEY"],
:secret_access_key => ENV["AWS_SECRET"],
:region => 'ap-southeast-1'
)
object = s3.buckets['popcorn-vod'].objects[original_url]
url = object.url_for(:get, {:expires => (24*60).minutes.from_now, :secure => true}).to_s
puts "opening file"
tmp_file = open(url) if url.present?
puts "processing file"
`...... 1280x720 ....`
`...... 640x360 .... transcodes/#{original_name}_360.mp4`
`...... 360x240 .... transcodes/#{original_name}_240.mp4`
`...... 284x160 .... transcodes/#{original_name}_160.mp4`
puts "procesing complete!"
puts "uploading file"
original_url = original_url.split("/")
original_url.pop
original_url = original_url.join("/")
upload_to_folder = original_url
Clip::RESOLUTIONS.each do |res|
original_url = "#{upload_to_folder}/#{original_name}_#{res}.mp4"
obj = s3.buckets['popcorn-vod'].objects[original_url]
file_to_be_uploaded = "#{directory}/transcodes/#{original_name}_#{res}.mp4"
obj.write(:file => file_to_be_uploaded)
puts "file with #{res} uploaded!!"
end
smil_file = File.open("#{directory}/transcodes/clip.smil", 'w') {
|file|
smil_file = '<smil><head></head><body><switch>'
smil_file << '<video src="mp4:'+original_name+'.mp4" .......... />'
smil_file << '<video src="mp4:'+original_name+'_720.mp4".........." />'
smil_file << '<video src="mp4:'+original_name+'_360.mp4".........." />'
smil_file << '<video src="mp4:'+original_name+'_240.mp4".........." />'
smil_file << '<video src="mp4:'+original_name+'_160.mp4".........." />'
smil_file << '</switch></body></smil>'
file.write(smil_file)
}
original_url = "#{upload_to_folder}/clip.smil"
obj = s3.buckets['popcorn-vod'].objects[original_url]
file_to_be_uploaded = "#{directory}/transcodes/clip.smil"
obj.write(:file => file_to_be_uploaded)
puts "smil file uploaded!!"
FileUtils.rm_r "#{directory}/transcodes/" if File.exists?("#{directory}/transcodes")
self.update_attribute(:is_transcoded, true)
puts "file removed after upload!!"
else
puts "transcode generated already !"
end
end
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