Sur d’autres sites (12472)

• Rails ActionController::Live - Sends everything at once instead of async

  28 janvier 2016, par Michael B

  I have an issue with rails ActionController::Live

  In the end I want to show the progress of FFMPEG to the user, but for now I want to get this minimal example running :

  Rails media_controller.rb :

  class MediaController < ApplicationController
  
    include ActionController::Live
  
  
  
    def stream
  
      puts "stream function loaded"
  
  
  
        response.headers['Content-Type'] = 'text/event-stream'
  
        i = 0
  
        begin
  
          response.stream.write "data: 1\n\n"
  
          sleep 0.5
  
          i += 1
  
          puts "response... data: " + i.to_s
  
        end while i < 10
  
      response.stream.close
  
    end
  
  end

  Javascript :

  source = new EventSource("/test/0");
  
  source.addEventListener("message", function(response) {
  
    // Do something with response.data
  
    console.log('I have received a response from the server: ' + response);
  
  }, false);

  When I navigate to the site, there are no JavaScript Errors showing. As soon as I navigate to the site, the "stream"-Action of the MediaController gets successfully called. I can verify this, by looking at the Server-Console. It gives me the following output. After every response line, there is a 500ms delay, like expected :

  stream function loaded
  
  response... data: 1
  
  response... data: 2
  
  response... data: 3
  
  response... data: 4
  
  response... data: 5
  
  response... data: 6
  
  response... data: 7
  
  response... data: 8
  
  response... data: 9
  
  response... data: 10
  
  Completed 200 OK in 5005ms (ActiveRecord: 0.8ms)

  On the JavaScript Side, it gives me the following Output :

  (10x) I have received a response from the server: [object MessageEvent]

  But the problem is here, that it sends all these 10 Messages from the server after 5 seconds at the same time ! The expected behavior however is, that it should send me 1 message every 0.5 seconds !

  So what am I doing wrong here ? Where is the error ?

  

• How to know if ffmpeg conversion succeeded in Ruby ?

  11 septembre 2015, par 1.44mb

  I run the ffmpeg command to convert audio files to mp3 in my rails application :

  # Convert to MP3
  
  conversion_result = `ffmpeg -i "#{Refile::cache.directory}/#{self.file.id}" -f mp3 "#{_path_to_mp3}" 2>&1`

  After the conversion, an example of conversion_result is as follows :

  "ffmpeg version N-74748-gbaeb8f5 Copyright (c) 2000-2015 the FFmpeg
  developers\n built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1 14.04)\n
  configuration : —extra-libs=-ldl —prefix=/opt/ffmpeg
  —enable-avresample —disable-debug —enable-nonfree —enable-gpl —enable-version3 —enable-libopencore-amrnb —enable-libopencore-amrwb —disable-decoder=amrnb —disable-decoder=amrwb —enable-libpulse —enable-libdcadec —enable-libfreetype —enable-libx264 —enable-libx265 —enable-libfdk-aac —enable-libvorbis —enable-libmp3lame —enable-libopus —enable-libvpx —enable-libspeex —enable-libass —enable-avisynth —enable-libsoxr —enable-libxvid —enable-libvo-aacenc —enable-libvidstab\n libavutil 54. 31.100 / 54. 31.100\n libavcodec 56. 59.100 / 56. 59.100\n libavformat 56. 40.101 / 56. 40.101\n libavdevice 56. 4.100 / 56. 4.100\n libavfilter 5. 40.100 / 5. 40.100\n libavresample 2. 1. 0 / 2. 1. 0\n libswscale 3. 1.101 /
  3. 1.101\n libswresample 1. 2.101 / 1. 2.101\n libpostproc 53. 3.100 / 53. 3.100\nInput #0, mov,mp4,m4a,3gp,3g2,mj2, from ’../mey_attachments/cache/25888dc028deaabaee4d4de19d4726573860dbce0b907131e9919d294113’ :\n
  Metadata :\n major_brand : 3gp4\n minor_version : 0\n
  compatible_brands : isom3gp4\n creation_time : 2015-09-01 16:34:01\n
  Duration : 00:00:08.57, start : 0.000000, bitrate : 426 kb/s\n Stream

  0:0(eng) : Audio : aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 48 kb/s (default)\n Metadata :\n creation_time : 2015-09-01 16:34:01\n

  handler_name : SoundHandle\nOutput #0, mp3, to
  ’/tmp/Voice00045.mp3’ :\n Metadata :\n major_brand : 3gp4\n
  minor_version : 0\n compatible_brands : isom3gp4\n TSSE :
  Lavf56.40.101\n Stream #0:0(eng) : Audio : mp3 (libmp3lame), 44100 Hz,
  mono, fltp (default)\n Metadata :\n creation_time : 2015-09-01
  16:34:01\n handler_name : SoundHandle\n encoder : Lavc56.59.100
  libmp3lame\nStream mapping :\n Stream #0:0 -> #0:0 (aac (native) -> mp3
  (libmp3lame))\nPress [q] to stop, [?] for help\nsize= 67kB
  time=00:00:08.56 bitrate= 64.5kbits/s \nvideo:0kB audio:67kB
  subtitle:0kB other streams:0kB global headers:0kB muxing overhead :
  0.465427%\n"

  How can i make sure the conversion succeeded after the command executes ?

• Background Video Processing with Rails

  23 octobre 2013, par Matthew Snyder

  I am trying to get uploaded videos to be converted in the background, running windows. Some of what I am using :

  gem 'paperclip'
  
  gem 'delayed_job_active_record'
  
  gem 'ffmpeg'

  I have edited the registry to allow the ffmpeg command to be ran from anywhere, I get a popup that I assume is ffmpeg because it goes away too quickly, guess the command is wrong so if anyone knows what's wrong with it please let me know. But the real problem is that it just hangs there, it says :

  [2012-12-09 22:47:03] ERROR invalid body size.
  
  [2012-12-09 22:47:03] ERROR Errno::ECONNABORTED: An established connection was a
  
  borted by the software in your host machine.
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:396:i
  
  n `write'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:396:i
  
  n `<<'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:396:i
  
  n `_write_data'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:368:i
  
  n `send_body_string'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:249:i
  
  n `send_body'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpresponse.rb:152:i
  
  n `send_response'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/httpserver.rb:110:in
  
  `run'
  
          C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/webrick/server.rb:191:in `blo
  
  ck in start_thread'

  Does anyone know how to properly get this working ? I've went through a few tutorials that have bits and pieces of what I need but I can't get them working together. Here's what I have so far, lemme know if you need more :

  Model :

  class Video < ActiveRecord::Base
  
  
  
    belongs_to :user
  
    has_many :comments, dependent: :destroy
  
    attr_accessible :video, :user_id, :video_file_name, :title, :public, :description, :views
  
  
  
    has_attached_file :video, url: "/users/:user_id/videos/:id/:basename_:style.:extension"
  
  
  
    #process_in_background :video #causes death
  
  
  
    validates :video, presence: true
  
    validates :description, presence: true, length: { minimum: 5, maximum: 100}
  
    validates :title, presence: true, length: { minimum: 1, maximum: 15 }
  
  
  
    validates_attachment_size :video, less_than: 1.gigabytes
  
    validates_attachment :video, presence: true
  
  
  
    default_scope order: 'created_at DESC'
  
  
  
    Paperclip.interpolates :user_id do |attachment, style|attachment.instance.user_id
  
    end
  
  
  
    #before_post_process do |video|
  
     # false if video.status == "converting"
  
    #end
  
  
  
    def perform
  
      command = <<-end_command
  
        start ffmpeg -i #{ '/public/users/:user_id/videos/:id/:basename_:style.:extension' }  -ar 22050 -ab 32 -s 1280x720 -vcodec webm -r 25 -qscale 8 -f webm -y #{ '/public/users/:user_id/videos/:id/:basename_.webm' }
  
  
  
      end_command
  
      success = system(command)
  
      logger.debug 'Converting File: ' + success.to_s
  
      if success && $?.exitstatus.to_i == 0
  
        #self.converted!
  
        self.status = "converted"
  
      else
  
        #self.failure!
  
        self.status = "failed"
  
      end
  
    end
  
  
  
    handle_asynchronously :perform
  
  
  
    def self.search(search)
  
      if search
  
        find(:all, conditions: ["public = 't' AND title LIKE ?", "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, conditions: ["public = 't'"], order: "created_at DESC")
  
      end
  
    end
  
  
  
    def self.admin_search(search)
  
      if search
  
        find(:all, conditions: ['title LIKE ?', "%#{search}%"], order: "created_at DESC")
  
      else
  
        find(:all, order: "created_at DESC")
  
      end
  
    end
  
  
  
    private
  
  
  
      # This updates the stored filename with the new flash video file
  
      def set_new_filename
  
        #update_attribute(:filename, "#{filename}.#{id}.webm")
  
        update_attribute(:content_type, "video/x-webm")
  
      end
  
  
  
  end

  Controller :

  class VideosController < ApplicationController
  
      before_filter :signed_in_user, only: [:upload, :update, :destroy]
  
      before_filter :admin_user, only: :admin_index
  
  
  
      def upload
  
          @video = Video.new
  
          # generate a unique id for the upload
  
          @uuid = (0..29).to_a.map {|x| rand(10)}
  
      end
  
  
  
      def create
  
          @video = Video.new(params[:video])
  
          @video.user_id = current_user.id
  
  
  
          if @video.save
  
              @video.delay.perform
  
              flash[:success] = "Uploaded Succefully!"
  
              redirect_to @video.user
  
              Delayed::Worker.new.start
  
          else
  
              render 'upload'
  
          end
  
      end
  
  
  
      def show
  
          @video = Video.find(params[:id])
  
          @comments = @video.comments.paginate(page: params[:page], per_page: 6)
  
          if !@video.public
  
              if !signed_in? || current_user.id != @video.user_id  && !current_user.admin && !current_user.approved?(@video.user)
  
              flash[:notice] = "Video is private"
  
              redirect_to root_path
  
          end
  
      end
  
      end
  
  
  
      def update
  
          @video = Video.find(params[:id])
  
          if @video.update_attributes(params[:video])
  
        flash[:success] = "Video preferences saved"
  
      else
  
          flash[:fail] = "Failed to update video preferences"
  
      end
  
      redirect_to :back
  
    end
  
  
  
      def destroy
  
          @video = Video.find(params[:id])
  
          @video.destroy
  
          flash[:deleted] = "Deleted Succefully!"
  
          redirect_to :back
  
      end
  
  
  
      def index
  
          @videos = Video.paginate(page: params[:page], per_page: 6).search(params[:search])
  
      end
  
  
  
      def admin_index
  
          @videos = Video.paginate(page: params[:page], per_page: 6).admin_search(params[:search])
  
      end
  
  
  
      def ajax_video_comments
  
          @video = Video.find(params[:id])
  
          @comments = @video.comments.paginate(page: params[:page], per_page: 6)
  
  
  
          respond_to do |format|
  
          format.js   { render partial: 'shared/comments', content_type: 'text/html' }
  
      end
  
      end
  
  
  
      def ajax_video_watched
  
          @video = Video.find(params[:id])
  
          @video.views += 1
  
          @video.save
  
      end
  
  
  
      private
  
  
  
      def signed_in_user
  
          redirect_to root_path, notice: "Please Login." unless signed_in?
  
      end
  
  
  
      def admin_user
  
          redirect_to(root_path) unless current_user.admin?
  
      end
  
  
  
  end