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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.

• FFMpeg + iOS - Memory Leak

  4 octobre 2019, par Daneo

  I’ve managed to set up RTSP streaming through the use of FFMpeg.
  However, I’m plagued by some memory leaks, some of which I’ve managed to solve, but the profiler keeps reporting some other.

  I’ve posted the related class on Github, and would be very grateful if you could provide a hand in this because I don’t know where to look anymore.

  The profile reports the leak when closing the screen, so this means it is leaking something during the deallocation phase.

  Leaks :
  

• qsvdec : Fix memory leak

  5 décembre 2016, par Timothy Gu

  qsvdec : Fix memory leak
  Fixes CID1396851.
  

  • [DH] libavcodec/qsvdec.c