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• 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.

• FFmpeg avformat_open_input not working : Invalid data found when processing input

  2 novembre 2016, par John_Sheares

  This is my first time using FFmpeg. Every type of media file that I try to open with avformat_open_input, returns "Invalid data found when processing input". I am using 32bit FFmpeg Build Version : 92de2c2. I setup my VS2015 project according to this answer : Use FFmpeg in Visual Studio. What could be going wrong with this code ?

  #include "stdafx.h"
  
  #include 
  
  
  
  extern "C"
  
  {
  
      #include "libavcodec/avcodec.h"
  
      #include <libavformat></libavformat>avformat.h>
  
      #include <libavutil></libavutil>avutil.h>
  
  }
  
  
  
  int main(int argc, char *argv[])
  
  {
  
      AVFormatContext *pFormatCtx = NULL;
  
      avcodec_register_all();
  
  
  
      const char* filename = "d:\\a.mp4";
  
      int ret = avformat_open_input(&amp;pFormatCtx, filename, NULL, NULL);
  
      if (ret != 0) {
  
          char buff[256];
  
          av_strerror(ret, buff, 256);
  
          printf(buff);
  
          return -1;
  
      }
  
  }

• What is wrong with my FFMPEG command for streaming ? [duplicate]

  18 février 2017, par Muhammad Umer

  This question is an exact duplicate of :

  • FFMPEG : Conversion Failed Error when trying trying to create facebook stream from image and audio ?

  I am trying to stream to Facebook by using one image, but I get

  Packets are not in the proper order with respect to DTS7kbits/s<br />
av_interleaved_write_frame(): Invalid argument

  This is the command I am writing :

  ffmpeg \
  
  -re -y \
  
  -loop 1 \
  
  -f image2 \
  
  -i ./maxresdefault.jpg \
  
  -i ./audio.mp3 \
  
  -b:a 128k \
  
  -c:a aac -strict experimental \
  
  -vcodec libx264 \
  
  -g 30 \
  
  -r 30 \
  
  -f flv \
  
  "rtmp://rtmp-api.facebook.com:80/rtmp/..."