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• Validation failed : Video Paperclip::Errors::NotIdentifiedByImageMagickError

  28 mars 2017, par ACIDSTEALTH

  I have a model with an attached video. I want to create a scaled version of the video along with a series of thumbnails. I have the following setup :

  has_attached_file :video,
  
      styles: {
  
          original: { format: 'mp4', processors: [:transcoder] },
  
          large: { geometry: "720x720", format: 'jpg', processors: [:thumbnail] },
  
          medium: { geometry: "540x540", format: 'jpg', processors: [:thumbnail] },
  
          thumb: { geometry: "180x180", format: 'jpg', processors: [:thumbnail] }
  
      },
  
      default_url: ""

  When I test this in my development environment it works perfectly. The video and all images are correctly sized. When I deploy to Heroku however, I get the following error :

  Validation failed: Video Paperclip::Errors::NotIdentifiedByImageMagickError
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/validations.rb:78:in `raise_validation_error'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/validations.rb:50:in `save!'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/attribute_methods/dirty.rb:30:in `save!'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/transactions.rb:324:in `block in save!'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/transactions.rb:395:in `block in with_transaction_returning_status'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `block in transaction'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/transaction.rb:189:in `within_new_transaction'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `transaction'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/transactions.rb:211:in `transaction'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/transactions.rb:392:in `with_transaction_returning_status'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/transactions.rb:324:in `save!'
  
  /app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.2/lib/active_record/suppressor.rb:45:in `save!'
  
  /app/app/models/concerns/snapshot_methods.rb:37:in `copy_from_ziggeo!'
  
  /app/app/workers/snapshot_transcoder.rb:16:in `perform'
  
  /app/vendor/bundle/ruby/2.3.0/gems/resque-status-0.5.0/lib/resque/plugins/status.rb:161:in `safe_perform!'
  
  /app/vendor/bundle/ruby/2.3.0/gems/resque-status-0.5.0/lib/resque/plugins/status.rb:137:in `perform'

  What am I missing here ? I’ve searched for NotIdentifiedByImageMagickError and scanned numerous other questions on this issue, but have not had any success fixing my problem.

  Most of the solutions I’ve seen involve setting Paperclip.options[:command_path] = "/usr/bin/identify" in development. Since my problem is only on production, I tried applying this to production, subbing in the correct path for my production environment, like so :

  Paperclip.options[:command_path] = "/app/vender/imagemagick/bin/identify"

  This had no effect. Neither did /app/vender/imagemagick/bin.

• Paperclip geometry ignored

  27 mars 2017, par ACIDSTEALTH

  I have a model called Snapshot, which represents a user-recorded video. I want to take the input video file and scale it to fit within a 720x720 box (ImageMagick documentation). I then want to capture some screenshots of the video to represent it in my app. These sizes are specified accordingly in my model.

  I expect the output of this to be an original video with a maximum width of 720px (assuming it was recorded in landscape mode), a large JPG image with a maximum width of 540px, etc.

  When I attach the video file and save the model, the images and video file are processed but the result is not what I expected. The video file has a resolution of 960x720 and the images are all square (540x540, 360x360, etc).

  I’m not sure if I’m doing something wrong or if this is just a bug with Paperclip. Here is my code :

  class Snapshot < ApplicationRecord
  
      has_attached_file :video,
  
          styles: {
  
              original: { geometry: "720x720", format: 'mp4' },
  
              large: { geometry: "540x540", format: 'jpg' },
  
              medium: { geometry: "360x360", format: 'jpg' },
  
              thumb: { geometry: "180x180", format: 'jpg' }
  
          },
  
          default_url: "", processors: [:transcoder]
  
      validates_attachment_content_type :video, content_type: /\Avideo\/.*\Z/
  
      validates_attachment_size :video, less_than: 100.megabytes
  
  end

  I have also tried adjusting the geometry to 720x720>, 540x540>, etc. When I did this, the attachments’ resolution was unchanged, which seems to go completely against my understanding of how ImageMagick geometry works. I have numerous other models with image-only attachments that do not suffer from this issue.

  Here is a snippet from my Gemfile.lock so you can see which versions I am running :

  delayed_paperclip (3.0.1)
  
    activejob (>= 4.2)
  
    paperclip (>= 3.3)
  
  paperclip (5.1.0)
  
    activemodel (>= 4.2.0)
  
    activesupport (>= 4.2.0)
  
    cocaine (~> 0.5.5)
  
    mime-types
  
    mimemagic (~> 0.3.0)
  
  paperclip-av-transcoder (0.6.4)
  
    av (~> 0.9.0)
  
    paperclip (>= 2.5.2)
  
  paperclip-optimizer (2.0.0)
  
    image_optim (~> 0.19)
  
    paperclip (>= 3.4)

  Update
  I retried this with a video recorded in portrait mode (iPhone 6 front-facing webcam) and the video file’s output size was 720x720. The images were still square as before.

• Paperclip Upload Video Without Styles

  16 mars 2017, par Moamen Naanou

  Background :

  In my app, there is a model has image attachment using paperclip gem, now as per new requirements, I have to let the same attachment accept MP4 video files as well and the only validation I have to implement is about file size.

  Product Model (with image attachment only) :

  class Product < ActiveRecord::Base
  
    has_attached_file :file,
  
                      :styles => { medium: '300x300>', thumb: '100x100>' },
  
                      :processors => [:thumbnail],
  
                      :url => '/assets/:id/:style/:hash.:extension',
  
                      :hash_digest=>'SHA1',
  
                      :use_timestamp => false
  
  
  
  
  
    validates_attachment_content_type :file, :content_type => /\A(image)\/.*\Z/
  
    validates_attachment_size :file, :less_than => 5.megabytes
  
  end

  So after reading many related questions, to accept a video file as well, I’ve used gem paperclip-av-transcoder and installed ffmpeg (Mac) using :

  brew install ffmpeg --with-fdk-aac --with-ffplay --with-freetype --with-frei0r --with-libas

  Then finally I’ve revised my model to be :

  class Product < ActiveRecord::Base
  
    has_attached_file :file,
  
                      :styles => lambda {|file| if file.instance.is_image?
  
                                                  { medium: '300x300>', thumb: '100x100>' }
  
                                                elsif file.instance.is_video?
  
                                                  {:thumb => { :geometry => "100x100#", :format => 'jpg', :time => 10}}
  
                                                end },
  
                      :processors => lambda {|file| if file.is_image?
  
                                                      [:thumbnail]
  
                                                    elsif file.is_video?
  
                                                      [:transcoder]
  
                                                    end},
  
                      :url => '/assets/:id/:style/:hash.:extension',
  
                      :hash_digest=>'SHA1',
  
                      :use_timestamp => false
  
  
  
  
  
    validates_attachment_content_type :file, :content_type => /\A(image|video)\/.*\Z/
  
    validates_attachment_size :file, :less_than => 5.megabytes
  
  
  
    def is_video?
  
      file_content_type =~ %r(video)
  
    end
  
  
  
    def is_image?
  
      file_content_type =~ %r(image)
  
    end
  
  end

  Now the file field accepts both videos & images but the video shouldn’t be compressed, because if it is compressed, I will get IO Error [Closed Stream]

  Question :

  I’m expecting compressed MP4 file to be received from Mobile client(through REST API) and I don’t want to generate any thumb image or any other style or do any processing on this video and without installing any processor (ffmpeg in my case) and if I did so currently, I’m getting the following error because ImageMagic doesn’t work with video files :

  Paperclip::Errors::NotIdentifiedByImageMagickError

  Any ideas ?