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• What is substitute for ffmpeg video filter "between" for audio filter

  18 janvier 2018, par Hekimen

  i want make a short video preview from long video with audio, but i have problem to select audio stream segments on specific timestamps.
  I am using this option for segmenting video

  -filter_complex "[0:v]select='between(t,216,220.5)+between(t,432,436.5)+between(t,648,652.5)+between(t,864,868.5)+between(t,1080,1084.5)+between(t,1296,1300.5)+between(t,1512,1516.5)+between(t,1728,1732.5)+between(t,1944,1948.5)+between(t,2160,2164.5)'[outv]"

  and my question is how this option rewrite for audio stream, because when i use just -filter without selecting any stream then i get error : Cannot connect video filter to audio input

  I am using this ffmpeg version :

  ffmpeg version 3.3.3-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.4.0 (Debian 6.4.0-2) 20170724
  configuration : —enable-gpl —enable-version3 —enable-static —disable-debug —disable-ffplay —disable-indev=sndio —disable-outdev=sndio —cc=gcc-6 —enable-fontconfig —enable-frei0r —e
  nable-gnutls —enable-gray —enable-libass —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopus —enable-librtm
  p —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libvidstab —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libxvid
  libavutil      55. 58.100 / 55. 58.100
  libavcodec     57. 89.100 / 57. 89.100
  libavformat    57. 71.100 / 57. 71.100
  libavdevice    57.  6.100 / 57.  6.100
  libavfilter     6. 82.100 /  6. 82.100
  libswscale      4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc    54.  5.100 / 54.  5.100
  

• 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