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• Replicate audio/video from another video [closed]

  25 mars 2020, par thatPranav

  I have two videos, say, video-1 and video-2 and I wish to convert video-1 format exactly like video-2.

• I am using a dragable and resizable selector which is shown on top of my video. I need to get it x and y coordinates according to the video resolution

  11 août 2023, par Himanshu

  I am using @use-gesture/react @react-spring/web to create a draggable and resizable selector over the video. I am also able to get the x and y coordinates of the selector with respect to the video element but since I am giving my video tag height and width so that the video fits my screen the X and Y coordinates I am getting are not in the exact same position in the full resolution video. I need to pass the x and y coordinates to ffmpeg to blur the specific portion of the video.

  


• Using dragonfly and ffmpeg to process a video in Rails

  26 novembre 2015, par Maikell

  I am writing a Ruby on Rails 4 Web application, that gives the user an image-upload functionality. For this I followed this tutorial, which is using the gems

  dragonfly
  
  jquery-fileupload-rails
  
  remotipart

  This is working fine.
  Now I want to extend the image-upload functionality, to upload videos as well. But unfortunately I’m stuck with it. Here is what I have tried so far :

  config/initializers/dragonfly.rb

  require 'dragonfly'
  
  
  
  # Configure
  
  Dragonfly.app.configure do
  
    plugin :imagemagick
  
  
  
    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 "/media/: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
  
  
  
  # Add model functionality
  
  if defined?(ActiveRecord::Base)
  
    ActiveRecord::Base.extend Dragonfly::Model
  
    ActiveRecord::Base.extend Dragonfly::Model::Validations
  
  end

  models/video.rb

  class Video < ActiveRecord::Base
  
    dragonfly_accessor :video, app_name: :videos do
  
      storage_options do |video|
  
        { path: "videos/#{Video.gen_uuid}-#{video.name}.webm" }
  
      end
  
    end
  
  end

  I upload the video with ajax. It is succesfully saved in the systems /tmp-directory. Than in the video-controller I call

  @video = Video.new[video_params]
  
  @video.save

  Now the video-params are correctly saved in the database, but the video is not saved in the given directory /uploads/videos Also my goal is, to process the video with ffmpeg, to convert it to a webm. ffmpeg is installed in the system and converting a video on the command line works fine.

  • But how do I get dragonfly to start the conversion process and save the video in the rails project ? Where do I have to put the ffmpeg-commands to dragonfly ?
  • Why does dragonfly not save the video in the directory uploads/videos ?

  Everything works fine with images and imagemagick. Only videos are causing problems.