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• RoutingError No route matches GET videos/original/missing.png

  4 novembre 2015, par D.Graves

  Okay so Im having an issue uploading videos using paperclip av transcoder. Im getting just a blank black image for my video and cant play anything. So no error pops up online but on my GitBash I see an ActionController Routing Error.

  This is the Error I see in my Gitbash
  

  My model that has the video :

  class Pin < ActiveRecord::Base
  
   belongs_to :user
  
   has_attached_file :video, :styles => {
  
  :medium => { :geometry => "640x480", :format => 'mp4' },
  
  :thumb => { :geometry => "100x100#", :format => 'jpg', :time => 10 }
  
   }, :processors => [:transcoder]
  
  
  
  validates_attachment_content_type :video, :content_type => ["video/mp4",     "video.mov", "video/mpeg","video/mpeg4", "image/jpg", "image/jpeg"]
  
  
  
  end

  My show view for the video :

  <%= video_tag @pin.video.url %>
  
  
  
  <p>
  
   <strong>Description:</strong>
  
   &lt;%= @pin.description %>
  
  </p>
  
  
  
  &lt;% if @pin.user == current_user %>
  
  &lt;%= link_to 'Edit', edit_pin_path(@pin) %>
  
  &lt;% end %>
  
  &lt;%= link_to 'Back', pins_path %>

  I believe I installed ffmpeg correct and here is what it shows on my Gitbash for my version of ffmpeg

  

  I also have the newest version of paperclip and paperclip av transcoder installed. Am I just missing a route ? If you all need any other code to maybe help just let me know and ill post it

• Rails Thumbnails for videos being uploaded to S3

  20 octobre 2015, par Dani

  I have a rails application where I need to upload videos to an amazon s3 bucket alongwith their thumbnails. I am using ffmpeg to generate thumbnails and I am using carrierwave to handle video uploads. Here is my video uploader class

   class VideoUploader < CarrierWave::Uploader::Base
  
    include CarrierWave::Video
  
    storage :fog
  
    def store_dir
  
       "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  
    end
  
    def extension_white_list
  
      %w(mp4 flv)
  
    end
  
  end

  The video uploads fine and the column for video url is set in videos table but I want to generate thumbnail and upload it as well. I know I have to use ffmpeg here but don’t exactly know how to do it.

  Any help will be appreciated.

• Latency issue with CMU Sphinx 4

  22 septembre 2015, par vijaym

  I have written the speech recognition application using CMU sphinx 4 and followed the details from this link. I have defined the Acoustic,Dictionary and Language Model as below

  configuration.setAcousticModelPath("resource:/edu/cmu/sphinx/models/en-us/en-us");
  
  
  
  configuration.setDictionaryPath("resource:/edu/cmu/sphinx/models/en-us/cmudict-en-us.dict");
  
  
  
  configuration.setLanguageModelPath("resource:/edu/cmu/sphinx/models/en-us/en-us.lm.bin");

  With the above configuration the 20 minutes of wav file takes almost close to 20 minutes to do the transcription.Hence than I tried to pass the user defined config.xml. I did n’t find the configuration manager option to pass the user defined config.xml with the current version of Sphinx4.Then I had written own recognizer by extending the AbstractSpeechRecognizer.java class(It may be useless) and changed few parameters of config.xml and I tried it but still no improvement.

  I have downloaded video and audio across multiple source and converted into WAV file using FFMPEG

  The command is as below

  ffmpeg -i input.mp3 -acodec pcm_s16le -ac 1 -ar 16000 output.wav

  Environment Details :

  Java 8

  Ubuntu 14.04

  RAM 4GB

  I5 Processor

  What I would like to know is, what I am missing here and how to improve the performance ?