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• android : Merge two audio files to one using FFMPEG

  27 mars 2019, par Asif Sb

  I have been stuck from the past two days, couldn’t able to figure out what went wrong.

  Log.d(TAG, "doInBackground: wee");
  
  String s = "-i ["+fileName+"] -i ["+fileName3+"] -filter_complex amerge -ac 2 -c:a libmp3lame -q:a 4 ["+finalAudio+"]";
  
  String[] cmd=s.split(" ");
  
  mergeMediaFiles(RecordActivity.this,cmd);

  And I am getting the following error.

  2019-03-27 11:38:03.525 12912-13042/com.encrypt.audiorecord E/FFmpeg: Exception while trying to run: [Ljava.lang.String;@4bfef23
  
      java.io.IOException: Cannot run program "/data/user/0/com.encrypt.audiorecord/files/ffmpeg": error=2, No such file or directory
  
          at java.lang.ProcessBuilder.start(ProcessBuilder.java:1050)
  
          at java.lang.Runtime.exec(Runtime.java:695)
  
          at java.lang.Runtime.exec(Runtime.java:560)
  
          at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10)
  
          at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38)
  
          at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10)
  
          at android.os.AsyncTask$2.call(AsyncTask.java:333)
  
          at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  
          at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
  
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
  
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
  
          at java.lang.Thread.run(Thread.java:764)
  
       Caused by: java.io.IOException: error=2, No such file or directory
  
          at java.lang.UNIXProcess.forkAndExec(Native Method)
  
          at java.lang.UNIXProcess.<init>(UNIXProcess.java:133)
  
          at java.lang.ProcessImpl.start(ProcessImpl.java:132)
  
          at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
  
          at java.lang.Runtime.exec(Runtime.java:695) 
  
          at java.lang.Runtime.exec(Runtime.java:560) 
  
          at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10) 
  
          at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38) 
  
          at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10) 
  
          at android.os.AsyncTask$2.call(AsyncTask.java:333) 
  
          at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
  
          at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245) 
  
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) 
  
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) 
  
          at java.lang.Thread.run(Thread.java:764) 
  
  </init>

  And I followed this link to integrate FFMPEG to the android app.

  Below is my mergeMediaFiles() method :

  public void mergeMediaFiles(Context context,String[] cmd) {
  
          FFmpeg ffmpeg = FFmpeg.getInstance(context);
  
          try {
  
              // to execute "ffmpeg -version" command you just need to pass "-version"
  
              ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
  
  
  
                  @Override
  
                  public void onStart() {
  
                  }
  
  
  
                  @Override
  
                  public void onProgress(String message) {
  
                  }
  
  
  
                  @Override
  
                  public void onFailure(String message) {
  
                  }
  
  
  
                  @Override
  
                  public void onSuccess(String message) {
  
                  }
  
  
  
                  @Override
  
                  public void onFinish() {
  
                  }
  
              });
  
          } catch (FFmpegCommandAlreadyRunningException e) {
  
              //
  
          }
  
      }

  And the path of all my files are from cacheDir

  fileName = getExternalCacheDir().getAbsolutePath();
  
          fileName += "/audiorecordtest.wav";

• FFMPEG PHP enter command lines ?

  3 mai 2019, par Robert

  You will have to excuse me I have been spending the past 2 days reading through old FFMPEG posts for an answer but did little but confuse myself.
  It seems from what I read FFMPEG-PHP wrappers aren’t supported anymore ??? and to be honest they don’t seem like the proper way of learning how to incorporate it with PHP as there is a whole lot more help for command line FFMPEG usage and the FFMPEG-PHP wrapper usage looks nothing like the command line as far as I can tell.

  So I have 2 questions on using ffmpeg with PHP. So we are on the same page I posted a little info below.

  I downloaded FFMPEG static for windows 64bit.
  I then ran (in composer)

        $ composer require php-ffmpeg/php-ffmpeg

  in my vendor folder i have the following path.

      vendor\ffmpeg-20190429-ac551c5-win64-static\bin

  if I open the command prompt in that folder and type FFMPEG I get.

   ffmpeg version N-93710-gac551c54b1 Copyright (c) 2000-2019 the FFmpeg 
  
   developers
  
  built with gcc 8.3.1 (GCC) 20190414
  
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable- 
  
   fontconfig --enable-gnutls --enable-iconv --enable-libass --enable- 
  
   libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame -- 
  
   enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg 
  
   --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr -- 
  
   enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack 
  
   --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 -- 
  
   enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable- 
  
   libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa 
  
   --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx -- 
  
   enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable- 
  
   nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
   libavutil      56. 26.100 / 56. 26.100
  
   libavcodec     58. 52.100 / 58. 52.100
  
   libavformat    58. 27.103 / 58. 27.103
  
   libavdevice    58.  7.100 / 58.  7.100
  
   libavfilter     7. 50.100 /  7. 50.100
  
   libswscale      5.  4.100 /  5.  4.100
  
   libswresample   3.  4.100 /  3.  4.100
  
   libpostproc    55.  4.100 / 55.  4.100
  
   Hyper fast Audio and Video encoder
  
   usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  So I’m pretty sure FFMPEG is installed which was my goal.

  Now on my PHP side here is where I am at, and I’m not sure how this works.

  1ST QUESTION. Do I need to save my $_POST files to the drive before manipulating them ? Or can I use the $file and $filep as is ? I don’t really want to store those files, only the output.

  My SLIM code.

   $app->post('/telestrator', function(Request $request, Response $response) 
  
   {
  
  
  
   $response = array();
  
  
  
   if (isset ($_POST['ID']) && ($_POST['position']) && $_FILES['video'] 
  
   ['error'] === UPLOAD_ERR_OK && $_FILES['image']['error'] === 
  
   UPLOAD_ERR_OK) {
  
  
  
   $file = $_FILES['video']['tmp_name'];
  
   $filep = $_FILES['image']['tmp_name'];
  
   $time = $_POST['position'];
  
   $position = msToTime($time);
  
   $filetime = round(microtime(true) * 1000);
  
   $outputfolder = 'teletemp/';
  
  
  
   $ID = $_POST['ID'];
  
  
  
   $tempvid = $ID . 'tempvid' . 'mp4';
  
   $finalvid = $ID  . $filetime . 'mp4';
  
  
  
  
  
   $ffmpegpath = "public/ffmpeg.exe";
  
  
  
  echo "Starting ffmpeg...\n\n";
  
  echo shell_exec("$ffmpegpath -loop 1 -i $filep -c:v libx264 -t 3 -pix_fmt 
  
  yuv420p \"$outputfolder.\" $tempvid /");
  
   echo shell_exec("$ffmpegpath -i $file -t $position -c copy 
  
  \"$outputfolder\" 
  
   small-1.mp4 -ss $position -codec copy \"$outputfolder\" small-2.mp4 ");
  
   echo shell_exec("$ffmpegpath -i small-1.mp4 -i $tempvid.mp4 -i small- 
  
  2.mp4 \ 
  
   -filter_complex \"[0:v:0][1:v:0][2:v:0]concat=n=3:v=1:a=1[outv]\" \ 
  
   -map \"[outv]\" $finalvid" );
  
   echo "Done.\n";
  
  
  
   $upload = new videouploads();
  
  
  
          $desc = 'telestrated video for ' . $ID . $filetime;
  
          $ID = $_POST['ID'];  
  
  
  
          if ($upload->saveVideoFile($finalvid, getFileExtension($finalvid), 
  
   $desc, $ID)) {
  
              $response['error'] = false;
  
              $response['message'] = 'File Uploaded Successfullly';
  
          }
  
       else {
  
          $response['error'] = true;
  
          $response['message'] = 'Required parameters are not available';
  
      }
  
      echo json_encode($response);
  
    } 
  
   });
  
  
  
   function getFileExtension($file)
  
   {
  
   $path_parts = pathinfo($file);
  
   return $path_parts['extension'];
  
   }
  
  
  
   function msToTime($duration) {
  
   $seconds = floor($duration / 1000);
  
   $minutes = floor($seconds / 60);
  
   $hours = floor($minutes / 60);
  
   $milliseconds = $duration % 1000;
  
   $seconds = $seconds % 60;
  
   $minutes = $minutes % 60;
  
  
  
   $format = '%02u:%02u:%02u.%03u';
  
   $time = sprintf($format, $hours, $minutes, $seconds, $milliseconds);
  
   return rtrim($time, '0');
  
  
  
   }

  so it’s not running here is my postman. How do I get it to actually run the FFMPEG.

   Starting ffmpeg...
  
  
  
   Done.
  
  
  
   <br />
  
   <b>Notice</b>:  Undefined index: extension in
  
   <b>C:\xampp\htdocs\Pathways\public\index.php</b> on line
  
   <b>14741</b>
  
   <br />
  
   {"error":false,"message":"File Uploaded Successfullly"}

• C# Bitmap to AVI / WMV with Compression

  5 juillet 2019, par Digitalsa1nt

  Prelude :

  I’m going to preface this with, I have been learning C# in my spare time at work, and that I have been staring at code for a solid two days trying to wrap my head around this problem. I am developing some software to be used with a visualiser that connects by USB to a standard Desktop PC, the software detects the capture device and loads frames into bitmap using a New Frame Event, this is then displayed in a ’picture box’ as a live video stream. The problem as it sits is trying to encorporate the ability to record the stream and save to file, preferably a WMV or a compressed AVI.

  What’s been tried :

  I have considered and looked into the following :

  SharpAVI - cant seem to get this to compress or save the frames properly as it appears to mainly look at existing AVI files.

  AForge.Video.VFW - AVI files can be created but are far too large to be used, due to restrictions on the user areas of the individuals who will be using this software.

  AForge.Video.FFMPEG - Again due to considerations of those using this software I can’t have unmanaged DLL’s sat in the output folder with the Executable file, and unfortunately this particular DLL cant be compiled properly using Costura Fody.

  AVIFile Library Wrapper (From Code Project) - Again can’t seem to get this to compress a stream correctly from Bitmaps from the New Frame Events.

  DirectShow - Appears to use C++ and unfortunately is beyond my skill level at this time.

  The Relevant Code Snippets :

  Current References :

  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  using System.Resources;
  
  using System.Drawing.Imaging;
  
  using System.IO;
  
  //Aforge Video DLL's
  
  using AForge.Video;
  
  using AForge.Video.VFW;
  
  using AForge.Video.DirectShow;
  
  //Aforge Image DLL's
  
  using AForge.Imaging;
  
  using AForge.Imaging.Formats;
  
  using AForge.Imaging.Filters;
  
  //AviLibrary
  
  using AviFile;

  Global Variables :

      #region Global Variables
  
  
  
      private FilterInfoCollection CaptureDevice; // list of available devices
  
      private VideoCaptureDevice videoSource;
  
      public System.Drawing.Image CapturedImage;
  
  
  
      bool toggleMic = false;
  
  
  
      bool toggleRec = false;
  
      //aforge
  
      AVIWriter aviWriter;
  
      Bitmap image;
  
  
  
  
  
      #endregion

  Code for Displaying Stream

      #region Displays the Stream
  
  
  
      void videoSource_NewFrame(object sender, NewFrameEventArgs eventArgs)
  
      {
  
          picBoxStream.SizeMode = PictureBoxSizeMode.Zoom;
  
          picBoxStream.Image = (Bitmap)eventArgs.Frame.Clone();// clones the bitmap
  
  
  
  
  
          if (toggleRec == true)
  
          {
  
              image = (Bitmap)eventArgs.Frame.Clone();
  
              aviWriter.AddFrame(image);
  
          }
  
      }
  
  
  
      #endregion

  Current Code for Recording Stream

      #region Record Button
  
  
  
      private void btnRecord_Click(object sender, EventArgs e)
  
      {
  
          if (toggleRec == false)
  
          {
  
              saveAVI = new SaveFileDialog();
  
              saveAVI.Filter = "AVI Files (*.avi)|*.avi";
  
  
  
              if (saveAVI.ShowDialog() == DialogResult.OK)
  
              {
  
                  aviWriter = new AVIWriter();
  
                  aviWriter.Open(saveAVI.FileName, 1280, 720);
  
  
  
                  toggleRec = true;
  
                  Label lblRec = new Label();
  
              }
  
  
  
          }
  
          else if (toggleRec == true)
  
          {
  
              aviWriter.Close();
  
              toggleRec = false;
  
          }
  
      }
  
  
  
      #endregion

  I apoligise if the above code doesn’t look quite right, I have been swapping, changing and recoding those three sections a lot in order to find a working combination. This means that it’s rather untidy but I didn’t see the point in cleaning it all up until I had the code working. That being said really any help that you can provide is greatfully recieved, even if it’s a case of what I want to do just cannot be done.

  Thank you in advance.

  EDIT : 2019 :

  It’s been awhile since I posted this and it still gets the odd bit of interest here and there. Back when I posted this I was teaching myself to code and I had this weird quirk that I didn’t like using 3rd party libraries if I could avoid it, I wanted to do my own work, since then I’ve learnt a lot and one of those things is that the open source world is immense, impressive and kind. So if there is a 3rd party library that does what you want just use it, it’ll save you time.