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• Merge commit 'cc1c94dacd0642ac1a6cad45deb65071f127d91a'

  19 février 2018, par James Almer

  Merge commit 'cc1c94dacd0642ac1a6cad45deb65071f127d91a'
  * commit 'cc1c94dacd0642ac1a6cad45deb65071f127d91a' :
  
    configure : Pass the right machine types to dlltool for arm and arm64 mingw
  Merged-by : James Almer <jamrial@gmail.com>
  

  • [DH] configure

• Permission denied when trying to call ffmpeg on heroku

  1er décembre 2013, par chuck w

  I have a rails 3.1 web app on Heroku (cedar) that that allows users to post stories with photo and video attachments using the paperclip gem (3.5.1). Uploads are stored on s3. This has been working 100% for many months.

  I have recently added video transcoding and thumbnailing to my dev machine with the paperclip-ffmpeg gem (1.0.1) and ffmpeg running locally. This is also working.

  I've followed these instructions to build and install ffmpeg on heroku, and I've altered my Heroku app's path so that it reads as follows :

  PATH:   bin:vendor/ffmpeg/bin:vendor/bundle/ruby/1.9.1/bin:/usr/local/bin:/usr/bin:/bin

  and my app's LD_LIBRARY_PATH so that it reads as follows :

  LD_LIBRARY_PATH:             vendor/ffmpeg/lib:/usr/local/lib

  Finally, I've vendored ffmpeg into my app with the following structure :

  

  When I commit and push these changes to Heroku and POST a story that has a video I get the following output on Heroku logs :

  2013-11-30T22:51:46.711010+00:00 app[web.1]: Started POST "/stories" for 71.80.218.93 at        
  
  2013-11-30 22:51:46 +0000
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: Cocaine::ExitStatusError (Command 'ffprobe 
  
  "/tmp/sideways video20131130-2-14w1q4j.mp4" 2>&1' returned 126. Expected 0
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: Here is the command output:
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]:   app/controllers/stories_controller.rb:11:in     
  
  `create'
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.019228+00:00 heroku[router]: at=info method=POST path=/stories     
  
  host=myapp.herokuapp.com fwd="71.80.218.93" dyno=web.1 connect=1ms    
  
  service=3130ms status=500 bytes=754
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023600+00:00 app[web.1]: cache: [POST /stories] invalidate, pass
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: sh: ffprobe: Permission denied
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: ):

  Also, running the console command : heroku run "ffmpeg -version" -a myapp
  returns :

  Running ffmpeg -version attached to terminal... up, run.6591
  
  bash: vendor/ffmpeg/bin/ffmpeg: Permission denied

  Here is my Post model paperclip set-up :

  class Post < ActiveRecord::Base
  
  
  
    attr_accessible :contents, :photo, :video
  
  
  
    belongs_to    :story, :touch => true
  
    belongs_to    :user, :touch => true
  
  
  
    has_attached_file :photo, 
  
                      :styles => { 
  
                        :thumb => ["100x140>", :jpg],
  
                        :medium => ["400x400>", :jpg],
  
                        :large => ["800x800>", :jpg]
  
                      },
  
                      :processors => [:thumbnail],
  
                      :storage => :s3,
  
                      :s3_credentials => "#{Rails.root.to_s}/config/s3.yml",
  
                      :path => "/:style/:id/:filename"
  
  
  
    has_attached_file :video, 
  
                      :storage => :s3,
  
                      :s3_credentials => "#{Rails.root.to_s}/config/s3.yml",
  
                      :path => "/video/:id/:filename",
  
                      :styles => {
  
                        :thumb => { :geometry => "140x100#", :format => 'jpg', :time => 10 },
  
                        :medium => { :geometry => "480x360", :format => 'mp4' },
  
                      }, :processors => [:ffmpeg]

  Why am I getting these "permission denieds" ? Any help would be greatly appreciated !!!

• Streaming jpegs to a video on my server

  2 décembre 2013, par Andrew Simpson

  I found a solution to my problem IF I was using a Linux/UNIX machine. It is FFServer from the tools from FFMPEG.

  I had been using FFMPEG on my client Winform Desktop C# to convert jpegs into an OGG video file for playback.

  I have now been tasked with uploading the jpegs to my server and rendering it as a video.

  Optimum, I would start an FFMPEG process on my client PC and supply its stdin with jpegs in byte array format. I have achieved this (I have looked around) but is there a way to redirect the stdoutput to my server that can be picked up by my code on the server and render in real-time to my web User ?

  I have looked on the ffmpeg web site but I am unsure how to 'fit' it in with my process.

  This is my code so far :

      public byte[] EncodeAndUploadImages(string _args1, string _fn)  
  
      {
  
          byte[] _data = null;
  
          try
  
          {
  
              clientBuild = new Process();
  
              clientBuild.StartInfo.WorkingDirectory = Environment.CurrentDirectory;
  
              clientBuild.StartInfo.Arguments = " -f mjpeg -r 30 -i - -c:v libtheora -q:v 7 -r 30 -f ogg -";
  
              clientBuild.StartInfo.FileName = Environment.CurrentDirectory + @"\ffmpeg.exe";
  
              clientBuild.StartInfo.UseShellExecute = false;
  
              clientBuild.StartInfo.RedirectStandardOutput = true;
  
              clientBuild.StartInfo.RedirectStandardError = true;
  
              clientBuild.StartInfo.RedirectStandardInput = true;
  
              clientBuild.StartInfo.CreateNoWindow = true;
  
              clientBuild.StartInfo.LoadUserProfile = false;
  
              clientBuild.EnableRaisingEvents = true;    
  
              clientBuild.Start();
  
  
  
              using (BinaryWriter bw = new BinaryWriter(clientBuild.StandardInput.BaseStream))
  
              {
  
                 //I am simulating a stream of jpegs coming in////////////////
  
                  for (int i = 1; i < 20; i++)
  
                  {
  
                      using (MemoryStream ms = new MemoryStream())
  
                      {
  
                          System.Diagnostics.Debug.Write(i.ToString("00000"));
  
                          Bitmap bmp = new Bitmap("h:\\streamin\\" + i.ToString("00000") + ".jpg");
  
                          bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
  
                          bw.Write(ms.ToArray());                           
  
                          bmp.Dispose();
  
                          ms.Close();
  
                      }
  
                  }
  
                  bw.Close();
  
              }
  
  
  
              // I need some in my ffmpeg arguments to do something here//////   
  
              mStandardOutput = clientBuild.StandardOutput.BaseStream;
  
              mStandardOutput.BeginRead(mReadBuffer, 0, mReadBuffer.Length, StandardOutputReadCallback, null);
  
              clientBuild.WaitForExit();
  
              _data = mStandardOutputMs.ToArray();
  
              mStandardOutput.Close();
  
          }
  
          catch (Exception _ex)
  
          {
  
  
  
          }
  
          finally
  
          {
  
              clientBuild.Dispose();
  
          }
  
          return _data;
  
      }

  Thanks