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• java.io.IOException : Error running exec() Working Directory : null Environment : null

  16 janvier 2018, par Muhammad Hamza Shahid

  I am using WritingMinds/ffmpeg-android-java in application.

  here is my code

  loadFFmpeg();
  
  String cmd="ffmpeg -i /storage/emulated/0/media/audio/a.mp3 -i  /storage/emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
  
  executeFFmpeg(cmd.split(" "));

  and

  private void loadFFmpeg() {
  
      FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
  
      try {
  
          ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onStart() {}
  
  
  
              @Override
  
              public void onFailure() {}
  
  
  
              @Override
  
              public void onSuccess() {}
  
  
  
              @Override
  
              public void onFinish() {}
  
          });
  
      } catch (FFmpegNotSupportedException e) {
  
          // Handle if FFmpeg is not supported by device
  
      }
  
  }
  
  
  
  private void executeFFmpeg(String[] cmd)
  
  {
  
      /*String workFolder = getApplicationContext().getFilesDir() + "/ffmpeg";
  
      String environment = Environment.getExternalStorageDirectory().getAbsolutePath();
  
      Map map = new HashMap();
  
      map.put("Working Directory", workFolder);
  
      map.put("Environment",environment);*/
  
      FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
  
      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() {
  
                  stop.setEnabled(false);
  
                  play.setEnabled(true);
  
              }
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
          // Handle if FFmpeg is already running
  
      }
  
  }

  but I am getting following error

  6784-6962/com.flipartstudio.playandrecord E/FFmpeg : Exception while trying to run : [Ljava.lang.String ;@41803270
  java.io.IOException : Error running exec(). Command : [/data/data/com.flipartstudio.playandrecord/files/ffmpeg, /system/bin/ls, -l, /data/data/com.example.foo/files/ffmpeg] Working Directory : null Environment : null
  at java.lang.ProcessManager.exec(ProcessManager.java:211)
  at java.lang.Runtime.exec(Runtime.java:168)
  at java.lang.Runtime.exec(Runtime.java:123)
  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$2.call(AsyncTask.java:287)
  at java.util.concurrent.FutureTask.run(FutureTask.java:234)
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)
  Caused by : java.io.IOException : No such file or directory
  at java.lang.ProcessManager.exec(Native Method)
  at java.lang.ProcessManager.exec(ProcessManager.java:209)
  at java.lang.Runtime.exec(Runtime.java:168) 
  at java.lang.Runtime.exec(Runtime.java:123) 
  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$2.call(AsyncTask.java:287) 
  at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
  at java.lang.Thread.run(Thread.java:856) 

  I have also added

• Error trying to decode 4K video using NVDEC

  19 avril 2024, par Nestoraj

  I am trying to convert a 4K HEVC MKV file of 70GB into another HECV file but with less size. I am using FFmpeg with Nvidia acceleration but when I execute the following command an error appears :

  



  ffmpeg -y -vsync 0 -hwaccel_device 0 -hwaccel cuvid -c:v hevc_cuvid -i input.mkv -c:a copy -c:v hevc_nvenc -preset slow -b:v 10M -bufsize 10M -maxrate 15M -qmin 0 -g 250 -bf 2 -temporal-aq 1 -rc-lookahead 20 -i_qfactor 0.75 -b_qfactor 1.1 output.mkv


  



  The error is :

  



  [hevc_nvenc @ 0000021036b0d000] Provided device doesn't support required NVENC features
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height


  



  The video file has these details :

  



  

  



  It seems that FFmpeg cannot recognize my GPU as a supported device to decode but I have read that Nvidia has support for my card with NVDEC.

  



  I am running Windows 10 64 bits with i7 4790 and GTX 1080

  


• MP4Box Resolution unmatched between representation

  30 janvier 2018, par Massimo Vantaggio

  for one of the last stability tests i try with two representation instead the only one of before to get the adaptive bitrate streaming .
  Below my encoding command :

  ffmpeg -y -i $name -i logo.png -c:a aac -b:a 256k -ar 48000 -ac 2 -async 1 -c:v libx264 -x264opts keyint=$GOP:min-keyint=$GOP:no-scenecut -bf 0 -r $FPSC -b:v 1060k -maxrate 1060k -bufsize 530k -profile:v main -t $FDUR -filter_complex "[0:v][1:v]overlay=main_w-overlay_w-10:10,scale=-1:478" format480.mp4
  
  
  
  ffmpeg -y -i $name -i logo.png -c:a aac -b:a 384k -ar 48000 -ac 2 -async 1 -c:v libx264 -x264opts keyint=$GOP:min-keyint=$GOP:no-scenecut -bf 0 -r $FPSC -b:v 2400k -maxrate 2400k -bufsize 1200k -profile:v main -t $FDUR -filter_complex "[0:v][1:v]overlay=main_w-overlay_w-10:10,scale=-1:1080" format1080.mp4

  If for the first rapresentation i use 480p ffmpeg give me this error :

  width not divisible by 2 (853x480)
  Error initializing output stream

  If i use for first representation 478p ffmpeg run correctly all two encoding but after when i try to load these two files on MP4Box to dash them live with the following command :

  MP4Box -dash-live 8000 -subdur 8000 -profile dashavc264:live -mpd-refresh 240.0 -time-shift 24 -min-buffer 4000 -insert-utc -no-cache -out manifest.mpd format1080.mp4#video format480.mp4#video format1080.mp4#audio format480.mp4#audio

  the error come back into mp4box :
  "files have not-proportional layout 1920 x 1080 vs 849 x 478 but sample size and aspect ratio match, assuming precision issue"

  I would like to understand what i don’t know about, which are the resolutions that match, i understand that some movies have atypical resolution for example 1040 or 432 but the input video for this test is correct 1920 X 1080 and i wish to compress/encode it for dash and to create another representation with 480p, could i ask where I’m wrong ?
  Thanks !
  Massimo