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• Load processed video instead of original video - Rails, Dragonfly

  1er février 2016, par Michael B

  In my Rails 4-Project, I am using Dragonfly to upload images and videos.
  For image-processing I use imagemagick, for videoprocessing I use ffmpeg.

  Videos are uploaded and stored in the folder uploads/videos. After processing, they are stored in public/ffmpeg_videos/

  My question is : How can I use the processed-video instead of the uploaded video ?

  e.g. I use this code in the view, to display a video :

  <video src="&lt;%=@video.video.url%>"></video>

  This successfully loads the original video from the upload-path. But what do I have to change, to load the video from the ffmpeg-path ?

  initializers/dragonfly.rb

  require 'dragonfly'
  
  
  
  # Configure
  
  Dragonfly.app(:images).configure do
  
    plugin :imagemagick
  
    protect_from_dos_attacks false
  
    secret 'd045734b043b4383a246c5c8daf2d3e31217dc8b030f21861e4fd16c4b72d382'
  
    url_format '/media/:job/:name'
  
  
  
    datastore :file,
  
              root_path: Rails.root.join('uploads/images/'),
  
              server_root: Rails.root.join('uploads')
  
  end
  
  
  
  Dragonfly.app(:videos).configure do
  
    secret 'd045734b043b4383a246c5c8daf2d3e31217dc8b030f21861e4fd16c4b72d382'
  
    url_format "/video/:job/:name"
  
  
  
    datastore :file,
  
              root_path: Rails.root.join('uploads/videos/'),
  
              server_root: Rails.root.join('uploads')
  
  end
  
  
  
  # Logger
  
  Dragonfly.logger = Rails.logger
  
  
  
  # Mount as middleware
  
  Rails.application.middleware.use Dragonfly::Middleware, :images
  
  Rails.application.middleware.use Dragonfly::Middleware, :videos
  
  
  
  # Add model functionality
  
  if defined?(ActiveRecord::Base)
  
    ActiveRecord::Base.extend Dragonfly::Model
  
    ActiveRecord::Base.extend Dragonfly::Model::Validations
  
  end

• iPhone video conversion to Android supported format using FFMPEG

  21 janvier 2016, par Muhammad Umar

  I have an iPhone video created as follow

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2016-01-20 09:21:08
  
      make            : Apple
  
      make-eng        : Apple
  
      encoder         : 8.2
  
      encoder-eng     : 8.2
  
      date            : 2016-01-20T14:20:57+0500
  
      date-eng        : 2016-01-20T14:20:57+0500
  
      model           : iPhone 5
  
      model-eng       : iPhone 5
  
    Duration: 00:00:10.80, start: 0.000000, bitrate: 765 kb/s
  
      Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default)
  
      Metadata:
  
        creation_time   : 2016-01-20 09:21:08
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x320, 696 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        creation_time   : 2016-01-20 09:21:08
  
        handler_name    : Core Media Data Handler
  
        encoder         : H.264

  I want to convert it into Android support format so that all iPhone and maximum androids can read it.

  However if i convert to mpeg4 format using

  ffmpeg -i vid.mp4 -s 320x320 -vcodec mpeg4 -acodec aac -strict -2 -ac 2 -ar 44100 -ab 128k output.mp4

  it really degrades the quality

  How can i set the ffmpeg to create atleast as close as possible quality which runs on both android and iPhone

• how to upload a video to google driver use paperclip or carriwave

  14 janvier 2016, par bách trần nguyên

  i want to upload video to google driver.
  code models
  video model

  class Video < ActiveRecord::Base
  
    has_attached_file :video,
  
     :storage => :google_drive,
  
     :google_drive_credentials => {:client_id => AppConfig.gg_drive.client_id,
  
                                :client_secret => AppConfig.gg_drive.client_secret,
  
                                :refresh_token => AppConfig.gg_drive.refresh_token,
  
                                :scope => AppConfig.gg_drive.scope,
  
                                :access_token => Token.cache_access_token_google_drive
  
                                },
  
    :styles => {
  
      :medium => {
  
        :geometry => "640x480",
  
        :format => 'mp4'
  
      },
  
      :thumb => { :geometry => "160x120", :format => 'jpeg', :time => 10} 
  
    },# hello 123
  
    :processors => [:transcoder],
  
    :google_drive_options => {
  
      :path => proc { |style| "#{style}_#{id}_#{image.original_filename}" },
  
      :public_folder_id => '0B0VNyOkzIwUZZFFGeVhycFk0dnc'
  
    }
  
  end

  in Gemfile

  gem 'google-api-client'
  
  gem 'paperclip'
  
  gem 'paperclip-googledrive'
  
  gem 'paperclip-av-transcoder'
  
  gem "paperclip-ffmpeg"

  in controller

  def create
  
      if params[:videos]
  
        params[:videos].each { |video| Video.create(video: video) }
  
      end
  
  end

  when i run , this display error

  [AV] Running command : if command -v avprobe 2>/dev/null ; then echo "true" ; else echo "false" ; fi
  [AV] Running command : if command -v ffmpeg 2>/dev/null ; then echo "true" ; else echo "false" ; fi
  Av::UnableToDetect in AlbumsController#create
  Unable to detect any supported library

  pls. how to fix this errors