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• Memory leaks when opening RTMP stream with wrong url

  3 novembre 2015, par n00bie

  I’m using libav for streaming to YouTube through RTMP. I have function openRtmpStream() for opening RTMP stream. It works well. But recently i noticed the situation, when RTMP url is wrong (or server is down). In this situation my code is trying to reconnect, and calls this function about 15 times per second. With htop i can see about 20 MB per second memory leak in this situation.

  Maybe my code for closing context and streams is wrong ? Or any another idea what I’m doing wrong ? Thanks in advance !

  Here’s my code :

  bool openRtmpStream( const std::string& address )
  
  {
  
      if( ! m_httpContext ) {
  
          m_httpContext = avformat_alloc_context( );
  
  
  
          m_httpContext->oformat = av_guess_format( "flv", address.c_str( ), nullptr );
  
          if( m_httpContext->oformat ) {
  
              strcpy( m_httpContext->filename, address.c_str( ) );
  
  
  
              auto codecID = AV_CODEC_ID_H264;
  
  
  
              auto codec = avcodec_find_encoder( codecID );
  
  
  
              if( codec ) {
  
                  m_httpVideoStream = avformat_new_stream( m_httpContext, codec );
  
  
  
                  // ... here's initalization of m_httpVideoStream->codec ...
  
  
  
                  int res = avcodec_open2( codecContext, codec, nullptr );
  
                  if( res >= 0 ) {
  
                      auto codecID = AV_CODEC_ID_MP3;
  
                      auto codec = avcodec_find_encoder( codecID );
  
                      if( codec ) {
  
                          m_httpAudioStream = avformat_new_stream( m_httpContext, codec );
  
  
  
                          // ... here's initalization of m_httpAudioStream->codec ...
  
  
  
                          res = avcodec_open2( codecContext, codec, nullptr );
  
                          if( res >= 0 ) {
  
                              m_httpStreamWriteStartTime = boost::chrono::high_resolution_clock::now( );
  
                              if( avio_open2( &m_httpContext->pb, m_httpContext->filename, AVIO_FLAG_WRITE, m_AVIOInterruptCB.get( ), nullptr ) >= 0 ) {
  
                                  if( avformat_write_header( m_httpContext, nullptr ) >= 0 ) {
  
                                      return true; // success
  
                                  }
  
                              }
  
                              avcodec_close( m_httpAudioStream->codec );
  
                          }
  
                      }
  
                      avcodec_close( m_httpVideoStream->codec );
  
                  }
  
              }
  
          }
  
  
  
          // failed to open stream, close context and streams
  
  
  
          avio_close( m_httpContext->pb );
  
          avformat_free_context( m_httpContext );
  
          m_httpContext = nullptr;
  
          m_httpVideoStream = nullptr;
  
          m_httpAudioStream = nullptr;
  
      }
  
      return false;
  
  }

• How to intergrate FFMPEG NDK library in android project to decode the audio files ?

  19 août 2014, par saranya

  How to decode the audio files using FFMPEG NDK library ?
  Below is the code i used to decode the mp3 file after merging two mp3 files.
  try

              String tempPath = Environment.getExternalStorageDirectory()+"/"+mvalue+".mp3";
  
  
  
              File fileTemp = new File(tempPath);
  
  
  
              ffmpeg = new FfmpegController(fileTemp,outFile);
  
  
  
  
  
              Clip clipMixOut = new Clip(outFile.getCanonicalPath());
  
  
  
              try {
  
                  ffmpeg.convertToMPEG(clipMixOut,mCodecPath, new ShellUtils.ShellCallback() {
  
  
  
                      @Override
  
                      public void shellOut(String shellLine) {
  
                          // TODO Auto-generated method stub
  
                          System.out.println("fc>" + shellLine);
  
  
  
                      }
  
  
  
                      @Override
  
                      public void processComplete(int exitValue) {
  
                          // TODO Auto-generated method stub
  
                          System.err.println("concat non-zero exit: " + exitValue);
  
  
  
                      }
  
                  });
  
              } catch (Exception e) {
  
                  // TODO Auto-generated catch block
  
                  e.printStackTrace();
  
              }
  
  
  
          } catch (IOException e) {
  
              Log.e(TAG+":::", "IOException running ffmpeg" + e.getMessage());
  
          }

• How to use pipe in ffmpeg within c#

  14 août 2018, par Andrew Simpson

  I have 100 jpegs.

  I use ffmpeg to encode to a video file which is written to a hard drive.

  Is there a way to pipe it directly to a byte/stream ?

  I am using C# and I am using the process class to initate ffmpeg.

  Thanks