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Médias (1)

Mot : - Tags -/illustrator

Autres articles (45)

  • Emballe Médias : Mettre en ligne simplement des documents

    29 octobre 2010, par

    Le plugin emballe médias a été développé principalement pour la distribution mediaSPIP mais est également utilisé dans d’autres projets proches comme géodiversité par exemple. Plugins nécessaires et compatibles
    Pour fonctionner ce plugin nécessite que d’autres plugins soient installés : CFG Saisies SPIP Bonux Diogène swfupload jqueryui
    D’autres plugins peuvent être utilisés en complément afin d’améliorer ses capacités : Ancres douces Légendes photo_infos spipmotion (...)

  • Librairies et logiciels spécifiques aux médias

    10 décembre 2010, par

    Pour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
    Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...)

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    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (4907)

  • Normalize samples with ffmpeg

    5 avril 2017, par Steva

    I am writing application for music analysis. I wrote resampling module relying on ffmpeg. Currently, I have AV_SAMPLE_FMT_S16 but later I have converting to float, which can be time consuming.

    Because I need samples to be in some reasonable interval I need to do some kind of normalization, for AV_SAMPLE_FMT_FLT samples.

    So, how I can normalize samples which I get when I select AV_SAMPLE_FMT_FLT. Ideal interval would be -n to n, where n is greater than equal of 1.f

  • Rails 4.2.8 Using Paperclip With Resque

    27 mars 2017, par AntonioMarquis

    My application uploads training videos to a S3 bucket. I need the transcoding videos to be processed in the background so they don’t tie up the application. I want to use Resque on my dev machine and Heroku. But my jobs continue to fail.

    Model

    has_attached_file :video
    

    
process_in_background :video

    Gems

    gem 'aws-sdk', '< 2.0'
    
gem 'paperclip'
    
gem 'paperclip-av-transcoder'
    
gem "paperclip-ffmpeg"
    
gem "ffmpeg"
    
gem 'daemons'
    
gem 'delayed_paperclip'
    
gem 'nokogiri'#, '~> 1.5.9'
    
gem 'rmagick'
    
gem 'resque', "~> 1.22.0"

    Output from Failed Jobs

    Class ActiveJob::QueueAdapters::ResqueAdapter::JobWrapper
    

    
Arguments {"job_class"=>"DelayedPaperclip::Jobs::ActiveJob", "job_id"=>"111e4f9d-942d-4613-b3cb-0e884581249f", "queue_name"=>"paperclip", "arguments"=>["Video", 30, "source"], "locale"=>"en"}
    

    
Exception NoMethodError
    

    
Error undefined method `call' for "result == false":String
    

    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:165:in `block in halting'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:504:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:504:in `block in call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:504:in `each'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:504:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:778:in `_run_source_post_process_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/callbacks.rb:26:in `run_paperclip_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/attachment.rb:419:in `block in post_process'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:88:in `__run_callbacks__'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:778:in `_run_post_process_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/callbacks.rb:26:in `run_paperclip_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/attachment.rb:418:in `post_process'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/attachment.rb:112:in `assign'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/paperclip-3.5.4/lib/paperclip/attachment.rb:322:in `reprocess!'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/delayed_paperclip-2.10.0/lib/delayed_paperclip/attachment.rb:68:in `process_delayed!'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/delayed_paperclip-2.10.0/lib/delayed_paperclip.rb:36:in `process_job'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/delayed_paperclip-2.10.0/lib/delayed_paperclip/jobs/active_job.rb:10:in `perform'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/execution.rb:32:in `block in perform_now'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:117:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:117:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:498:in `block (2 levels) in around'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:343:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:343:in `block (2 levels) in simple'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/i18n-0.8.1/lib/i18n.rb:257:in `with_locale'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/translation.rb:7:in `block (2 levels) in '
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:441:in `instance_exec'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:441:in `block in make_lambda'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:342:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:342:in `block in simple'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:497:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:497:in `block in around'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:498:in `block (2 levels) in around'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:343:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:343:in `block (2 levels) in simple'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:23:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:23:in `block (4 levels) in '
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/notifications.rb:164:in `block in instrument'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/notifications.rb:164:in `instrument'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:22:in `block (3 levels) in '
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:43:in `block in tag_logger'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb:68:in `block in tagged'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb:26:in `tagged'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb:68:in `tagged'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:43:in `tag_logger'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/logging.rb:19:in `block (2 levels) in '
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:441:in `instance_exec'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:441:in `block in make_lambda'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:342:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:342:in `block in simple'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:497:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:497:in `block in around'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:505:in `call'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:778:in `_run_perform_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551@global/gems/activesupport-4.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/execution.rb:31:in `perform_now'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/execution.rb:21:in `execute'
    
/Users/antoniomarquis/.rvm/gems/ruby-1.9.3-p551/gems/activejob-4.2.8/lib/active_job/queue_adapters/resque_adapter.rb:46:in `perform'
    
Powered by Resque v1.22.0
    
Connected to Redis namespace resque on redis://127.0.0.1:6379/0

  • Encoding error with Sidekiq

    14 mars 2017, par DavidK

    Im following this tutorial https://www.pubnub.com/blog/2015-12-08-building-video-sharing-app-server-messaging-ruby/ on Building a Video Sharing App. Its a bit outdated and Ive already had to fix a view issues to get this far but Im pretty lost now with this latest issue. I believe its something to do with sidekiq. When I try uploading a video it seems to work and shows up on the database, but I get a "Video is still being encoded." message.

    This is the log :

    2017-03-13T22:00:14.729Z 11109 TID-ova30dq94 WebmVideoEncoder JID-540aa74110e63e334a712719 INFO: fail: 0.122 sec
    
2017-03-13T22:00:14.730Z 11109 TID-ova30dq94 WARN: {"context":"Job raised exception","job":{"class":"WebmVideoEncoder","args":[3],"retry":true,"queue":"default","jid":"540aa74110e63e334a712719","created_at":1489441065.533313,"enqueued_at":1489442414.60714,"error_message":"exception class/object expected","error_class":"TypeError","failed_at":1489441065.541595,"retry_count":6,"retried_at":1489442414.7293491},"jobstr":"{\"class\":\"WebmVideoEncoder\",\"args\":[3],\"retry\":true,\"queue\":\"default\",\"jid\":\"540aa74110e63e334a712719\",\"created_at\":1489441065.533313,\"enqueued_at\":1489442414.60714,\"error_message\":\"exception class/object expected\",\"error_class\":\"TypeError\",\"failed_at\":1489441065.541595,\"retry_count\":5,\"retried_at\":1489441667.7081149}"}
    
2017-03-13T22:00:14.730Z 11109 TID-ova30dq94 WARN: TypeError: exception class/object expected
    
2017-03-13T22:00:14.730Z 11109 TID-ova30dq94 WARN: /Users/David/rubyProjects/videouploader/videouploader/app/workers/webm_video_encoder.rb:14:in `raise'
    
/Users/David/rubyProjects/videouploader/videouploader/app/workers/webm_video_encoder.rb:14:in `perform'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:158:in `execute_job'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:138:in `block (4 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq.rb:36:in `block in '
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:133:in `block (3 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/bundler/gems/sidetiq-7bec4084165f/lib/sidetiq/middleware/history.rb:8:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/logging.rb:32:in `with_context'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/logging.rb:7:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:133:in `invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:132:in `block (2 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:174:in `stats'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:131:in `block in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/rails.rb:106:in `block in call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/execution_wrapper.rb:85:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/reloader.rb:68:in `block in wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/execution_wrapper.rb:85:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/reloader.rb:67:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/rails.rb:105:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:126:in `process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:82:in `process_one'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:70:in `run'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/util.rb:17:in `watchdog'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/util.rb:26:in `block in safe_thread'
    
2017-03-13T22:00:50.877Z 11109 TID-ova3gyd4k ThumbnailCutter JID-d0c693e39e06c2cccdec7d33 INFO: start
    
sh: -c: line 0: syntax error near unexpected token `('
    
sh: -c: line 0: `ffmpeg -i /Users/David/rubyProjects/videouploader/videouploader/public/system/videos/video_files/000/000/002/original/Heart_of_Gold_-_Neil_Young_cover_with_harmonica.1_(1).mp4 -ss 00:00:01.000 -vframes 1 /tmp/1489442450881632.png'
    
2017-03-13T22:00:50.902Z 11109 TID-ova3gyd4k ThumbnailCutter JID-d0c693e39e06c2cccdec7d33 INFO: fail: 0.025 sec
    
2017-03-13T22:00:50.903Z 11109 TID-ova3gyd4k WARN: {"context":"Job raised exception","job":{"class":"ThumbnailCutter","args":[2],"retry":true,"queue":"default","jid":"d0c693e39e06c2cccdec7d33","created_at":1489437193.246615,"enqueued_at":1489442450.8759801,"error_message":"exception class/object expected","error_class":"TypeError","failed_at":1489437193.254677,"retry_count":7,"retried_at":1489442450.901133},"jobstr":"{\"class\":\"ThumbnailCutter\",\"args\":[2],\"retry\":true,\"queue\":\"default\",\"jid\":\"d0c693e39e06c2cccdec7d33\",\"created_at\":1489437193.246615,\"enqueued_at\":1489442450.8759801,\"error_message\":\"exception class/object expected\",\"error_class\":\"TypeError\",\"failed_at\":1489437193.254677,\"retry_count\":6,\"retried_at\":1489441044.6660218}"}
    
2017-03-13T22:00:50.903Z 11109 TID-ova3gyd4k WARN: TypeError: exception class/object expected
    
2017-03-13T22:00:50.903Z 11109 TID-ova3gyd4k WARN: /Users/David/rubyProjects/videouploader/videouploader/app/workers/thumbnail_cutter.rb:13:in `raise'
    
/Users/David/rubyProjects/videouploader/videouploader/app/workers/thumbnail_cutter.rb:13:in `perform'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:158:in `execute_job'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:138:in `block (4 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq.rb:36:in `block in '
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:133:in `block (3 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/bundler/gems/sidetiq-7bec4084165f/lib/sidetiq/middleware/history.rb:8:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/logging.rb:32:in `with_context'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/server/logging.rb:7:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/middleware/chain.rb:133:in `invoke'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:132:in `block (2 levels) in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:174:in `stats'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:131:in `block in process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/rails.rb:106:in `block in call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/execution_wrapper.rb:85:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/reloader.rb:68:in `block in wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/execution_wrapper.rb:85:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/activesupport-5.0.2/lib/active_support/reloader.rb:67:in `wrap'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/rails.rb:105:in `call'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:126:in `process'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:82:in `process_one'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/processor.rb:70:in `run'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/util.rb:17:in `watchdog'
    
/Users/David/.rvm/gems/ruby-2.3.0/gems/sidekiq-4.2.9/lib/sidekiq/util.rb:26:in `block in safe_thread'

    thumbnail_cutter.rb

    class ThumbnailCutter
    
  include Sidekiq::Worker
    

    
  def perform(video_id)
    
    video = Video.find(video_id)
    
    output = "/tmp/#{Time.now.getutc.to_f.to_s.delete('.')}.png"
    
    _command = `ffmpeg -i #{video.video_file.path} -ss 00:00:01.000 -vframes 1 #{output}`
    
    if $?.to_i == 0
    
      video.thumbnail = File.open(output, 'r')
    
      video.save
    
      FileUtils.rm(output)
    
    else
    
      raise $?
    
    end
    
  end
    
end

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