Recherche avancée

Sur d’autres sites (5545)

• What is the full code to execute a ffmpeg command in java [on hold]

  16 janvier 2015, par user2303069

  I did the following and only got 0kb output file :
  File encodingFile = new File("c :\ffmpeg\bin\output.mp4") ;
  encodingFile.createNewFile() ;

                      Process process = new ProcessBuilder("c:\\ffmpeg\\bin\\ffmpeg.exe", "-i", "c:\\ffmpeg\\bin\\input.mp4", 
  
                              "-y", "-s", "1440" + "x" + "-1", "-vcodec", "libx264", "c:\\ffmpeg\\bin\\outfile.mp4").start();
  
  
  
                      is = process.getInputStream();
  
  
  
                      byte[] resultBuff = new byte[0];
  
                      byte[] buff = new byte[1024];
  
                      int k = -1;
  
                      while((k = is.read(buff, 0, buff.length)) > -1) {
  
                          byte[] tbuff = new byte[resultBuff.length + k]; // temp buffer size = bytes already read + bytes last read
  
                          System.arraycopy(resultBuff, 0, tbuff, 0, resultBuff.length); // copy previous bytes
  
                          System.arraycopy(buff, 0, tbuff, resultBuff.length, k);  // copy current lot
  
                          resultBuff = tbuff; // call the temp buffer as your result buff
  
                      }
  
                      fos=new FileOutputStream(encodingFile);
  
                      fos.write(resultBuff, 0,resultBuff.length );
  
                      gui.textArea1.append("\n"+resultBuff.length + " bytes read.");
  
                      //return resultBuff;
  
                      try {
  
                          // if you want to wait for the process to finish
  
                          process.waitFor();
  
                           gui.textArea1.append("\n+++++++Finished while converting!++++++++\n");
  
                      } catch (InterruptedException ex) {
  
                           gui.textArea1.append("\nInterruptedException: "+ex.getMessage());
  
                      }
  
  
  
                  }catch(IOException ex){
  
                      gui.textArea1.append("\nIOException converting: "+ex.getMessage());
  
                  }finally{
  
                      try{
  
                          if(is!=null){
  
                              is.close();
  
                          }
  
                          if(fos!=null){
  
                              fos.close();
  
                          }
  
                      }catch(IOException ioe){
  
                          gui.textArea1.append("\nClosing streams while converting:"+ioe.getMessage());
  
                      }
  
                  }

  My question is how to get back a converted file using ffmpeg in java. So far I got empty files. It’s like nothing happens during the converting process. I got the code from web(here) and modified it according to my desire so can you just tell me how to do this correctly ? Thanks a lot.

• hevc : pass the full HEVCNAL struct to decode_nal_unit

  25 janvier 2015, par Hendrik Leppkes

  hevc : pass the full HEVCNAL struct to decode_nal_unit
  This enables decode_nal_unit to access additional fields added in
  
  subsequent commits.
  Signed-off-by : Anton Khirnov <anton@khirnov.net>
  

  • [DBH] libavcodec/hevc.c

• call ffmepg from apache php without full path

  14 février 2015, par ffmpeg fan

  I need a apache /php to recognize ffmpeg command without specifing the full bath of /usr/local/bin/ffmpeg

  calling ffmpeg from command line executes the program
  calling ffmpeg from php via web does not execute the program
  calling /usr/local/bin/ffmpeg from php via web does execute the program

  why :
  a php script calls youtube-dl (a compiled program) and executes ffmpeg internally

  thank you in advance -
  tried ffmpeg path :
  which ffmpeg
  /usr/local/bin/ffmpeg

  echo $PATH
  
  /usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
  
  
  
  
  
  #php code for testing:
  
  $output = shell_exec('/usr/local/bin/ffmpeg 2>&1');
  
  echo "shell exec /usr/local/bin/ffmpeg <pre>$output</pre>";
  
  #Response:
  
  ffmpeg version 2.5.3 Copyright #(good)
  
  
  
  #Second php code for testing:
  
  $output = shell_exec('ffmpeg 2>&amp;1');
  
  echo "shell exec <pre>$output</pre>";
  
  #Response:
  
  sh: ffmpeg: command not found #(bad)