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• memory leak in ffmpeg

  28 janvier 2016, par Jerry Dubuke

  I have incorporated ffmpeg into an iPad app, and when I stream via rtsp, I see the app crash after a few hours of streaming.

  When i debug the app via Instruments/leaks, i found the offending leak is inside an FFMPEG library, and the offending function is av_buffer_realloc.

  Does anyone know how I can proceed with getting this leak addressed/fixed ? I do not have a lot of tools at my disposal, and I am not even sure where to post to get this problem addressed ?

  Thank you for any help/suggestions.

  as per a request, here is code. BUT, it has nothing to do with MY code, as the streaming is occurring, there is a leak in FFMPEG. Whether I set my timer to 1/30 sec, or 1/60 second, the leak is consistent, and as stated above is in a routine that is not mine - it is in the ffmpeg library.

  video = [[RTSPPlayer alloc] initWithVideo:szURL usesTcp:NO];
  
  lastFrameTime = -1;
  
  // seek to 0.0 seconds
  
  [video seekTime:0.0];
  
  [_nextFrameTimer invalidate];
  
  self.nextFrameTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/30 target:self selector:@selector(displayNextFrame:) userInfo:nil repeats:YES];

  here is displayNextFrame. It calls into RSTPPlayer to get a snapshot video frame :

  {
  
      if (![video stepFrame]) {
  
          [timer invalidate];
  
          [video closeAudio];
  
          return;
  
      }
  
      self.theImageView.image = video.currentImage;
  
  }

  Here is the currentImage code from RTSPPlayer :

  - (UIImage *)currentImage
  
  {
  
      if (!pFrame->data[0]) return nil;
  
      [self convertFrameToRGB];
  
      return [self imageFromAVPicture:picture width:outputWidth height:outputHeight];
  
  }

  Here is imageFromAVPicture :

  - (UIImage *)imageFromAVPicture:(AVPicture)pict width:(int)width height:(int)height
  
  {
  
      CGBitmapInfo bitmapInfo = kCGBitmapByteOrderDefault;
  
      CFDataRef data = CFDataCreateWithBytesNoCopy(kCFAllocatorDefault, pict.data[0], pict.linesize[0]*height,kCFAllocatorNull);
  
      CGDataProviderRef provider = CGDataProviderCreateWithCFData(data);
  
      CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
  
      CGImageRef cgImage = CGImageCreate(width, 
  
                                         height, 
  
                                         8, 
  
                                         24, 
  
                                         pict.linesize[0], 
  
                                         colorSpace, 
  
                                         bitmapInfo, 
  
                                     provider, 
  
                                     NULL, 
  
                                     NO, 
  
                                     kCGRenderingIntentDefault);
  
  CGColorSpaceRelease(colorSpace);
  
  UIImage *image = [UIImage imageWithCGImage:cgImage];
  
  
  
  CGImageRelease(cgImage);
  
  CGDataProviderRelease(provider);
  
  CFRelease(data);
  
  
  
  return image;

  }

  Thank you for any assistance.

• Unknown encoder 'libvorbis'

  5 juin 2015, par Aisha

  I am facing problem in converting videos by using ffmpeg. Its installed and all the libraries are also there. but using certain commands its showing for different encoders that they are Unknown.

  Unknown libvorbis

  Unknown libvpx

  Unknown libogg
  etc

  Can anyone help please.

  /bin$ ffmpeg
  
  ffmpeg version 0.10.15 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Aug 30 2014 15:49:19 with gcc 4.4.7 20120313 (Red Hat 4.4.7-3)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-gnutls --enable-libass --enable-libcdio --enable-libcelt --enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  
    libavutil      51. 35.100 / 51. 35.100
  
    libavcodec     53. 61.100 / 53. 61.100
  
    libavformat    53. 32.100 / 53. 32.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 61.100 /  2. 61.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  
  
  
  Use -h to get full help or, even better, run 'man ffmpeg'

• ffmpeg error - "error converting wmv to ac3 "

  13 octobre 2014, par yakumo

  hello i have an error

  my line

  ffmpeg -i 00003.track_4352.wav 00003.track_4352.ac3

  and résult

  ffmpeg version 2.1.5 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 8 2014 20:44:17 with gcc 4.8.3 (GCC) 20140624 (Red Hat 4.8.3-1)
  configuration : —prefix=/usr —bindir=/usr/bin —datadir=/usr/share/ffmpeg —incdir=/usr/include/ffmpeg —libdir=/usr/lib64 —mandir=/usr/share/man —arch=x86_64 —optflags=’-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong —param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic’ —enable-bzlib —disable-crystalhd —enable-frei0r —enable-gnutls —enable-libass —enable-libcdio —enable-libcelt —enable-libdc1394 —disable-indev=jack —enable-libfreetype —enable-libgsm —enable-libmp3lame —enable-openal —enable-libopencv —enable-libopenjpeg —enable-libopus —enable-libpulse —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libvorbis —enable-libv4l2 —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab —enable-avfilter —enable-avresample —enable-postproc —enable-pthreads —disable-static —enable-shared —enable-gpl —disable-debug —disable-stripping —shlibdir=/usr/lib64 —enable-runtime-cpudetect
  libavutil 52. 48.101 / 52. 48.101
  libavcodec 55. 39.101 / 55. 39.101
  libavformat 55. 19.104 / 55. 19.104
  libavdevice 55. 5.100 / 55. 5.100
  libavfilter 3. 90.100 / 3. 90.100
  libavresample 1. 1. 0 / 1. 1. 0
  libswscale 2. 5.101 / 2. 5.101
  libswresample 0. 17.104 / 0. 17.104
  libpostproc 52. 3.100 / 52. 3.100
  00003.track_4352.wav : Invalid data found when processing input

  I do not understand this error can you help me I would like to convert this file

  thank you in advance