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• uninitialized constant Paperclip::Error with paperclip-ffmpeg

  7 mai 2014, par Kashiftufail

  I am using Paperclip , and paperclip-ffmpeg for processing uploads. Below is my code

  class Asset < ActiveRecord::Base

   belongs_to :profile  
  
   has_attached_file :photo, :styles => {
  
        :mobile => {:geometry => "400x300", :format => 'mp4', :streaming => true}
  
    }, :processors => [:ffmpeg]
  
  
  
  
  
   validates_attachment_content_type :photo, :content_type => ['image/jpeg', 'image/png',  'image/gif', 'application/msword', 'application/pdf', 'video/x-flv']

  end

  when i upload image or video file then it is working properly. But when i upload PDF or doc

  file, this error occurs.

         "uninitialized constant Paperclip::Error" 

  Any help ??

  Or How i can put if condition validation if upload file is PDF or Doc. Then i can skip this

  below code. Because this is cause of error when file type is PDF or Doc.

          ":styles => {
  
        :mobile => {:geometry => "400x300", :format => 'mp4', :streaming => true}
  
    }, :processors => [:ffmpeg]" 

  Thanks

• How do I convert videos to mp4 for use on Android ? [on hold]

  11 avril 2014, par user3525211

  I am trying to use ffmpeg to convert videos (flv,mov,etc) to mp4 for use on android mobile phones. The conversion seemingly works fine. I can see the mp4s on my iphone. But when I test it out on android phones it does not work. I have been googling this problem for two weeks now and I have tried probably 50 different variations of ffmpeg command lines, but without success. I tried upgrading to the latest ffmpeg on my linux server, but I am not linux savvy and am not sure that it did what it was supposed to. I am at my wits end. Am I going about this wrong ? Is ffmpeg the right tool ? Any ideas ?

  Here is the command line I have used to successfully convert to mp4s that work on iphone :
  ffmpeg -y -i input.mov -s 480x270 -r 30000/1001 -b 128k -vcodec libx264 -vpre slow -vpre ipod320 -acodec libfaac -ac 2 -ar 44100 -ab 128k output.mp4

• C# Video concatenation using FFMpegConverter

  14 avril 2014, par Sreeraj

  I need to implement video concatenation in my ASP.NET Web API. I could successfully concatenate some sample videos downloaded from internet using 'FFMpegConverter' Nuget Package . But when I tried concatenating files captured from my mobile and tried opening it, I got the following error.
  

  Below is the code snippet I'm using :

  var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
  
  ffMpeg.ConcatMedia(_fileNames, videoRootPath.mp4, 
  
                     NReco.VideoConverter.Format.mp4, set);

  These are the Property screenshots of both the mp4 files.

  

  Thanks in advance