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• real time decoding of SHVC bit streams

  8 mai 2018, par userDtrm

  Does anyone know an open source decoder that can perform real time SHVC bit stream decoding ?. The openHEVC states that it has the capability to decode HEVC scalable bit streams, but I was not able to decode a SHVC bit stream generated by SHM 7.0 reference encoder.

  Also, does the ffmpeg support scalable extension of HEVC ?.

  Thanks.

• Shades of black

  14 février 2011, par Mans — Random ramblings

  Some time ago now, I was looking for a new laptop. Having compared the technical specifications of a number of models, I turned my attention to the most important aspect : the colour. Everybody knows black is the best colour, but which particular shade of black ? There are, apparently, quite a few to choose from.

  While some may settle for the plain Black, others will demand something more distinguished. The musician, for instance, might find Piano Black more attractive, while Ebony Black has, perhaps, an organic touch. For a more “hi-tech” feeling, there is Carbon Black, and if that is insufficient, Ultimate Carbon should hopefully do the trick. The French-sounding Intense Noir might, I speculate, be designed to evoke quasi-artistic images, whereas Platinum Black to me rings mostly of expensive and hardly at all of black. The last entry on my list is Liquorice Black, for which interpretation I refer to those capable of ingesting this vile substance.

  To this day I remain completely clueless regarding any actual variation in physical appearance, as for my purchase I selected black, plain and simple, and spent the difference on a RAM upgrade.

• Linker error with ffmpeg

  2 octobre 2013, par Martin Delille

  I'm trying to build a really simple Qt program using FFMpeg library.

  Currently I just want to open and close a video file.

  Here is my project file :

  QT    += core gui
  
  TARGET = avtest01
  
  TEMPLATE = app
  
  INCLUDEPATH += /usr/local/include
  
  LIBS += -L/usr/local/lib -lavformat
  
  SOURCES += main.cpp

  And my code :

  #include <qdebug>
  
  
  
  extern "C" {
  
  #include <libavformat></libavformat>avformat.h>
  
  }
  
  
  
  int main(int argc, char *argv[])
  
  {
  
      if(argc > 1)
  
      {
  
          AVFormatContext *format_context;
  
          qDebug() &lt;&lt; argv[1];
  
          if(avformat_open_input(&amp;format_context, argv[1], NULL, NULL) == 0)
  
          {
  
              qDebug() &lt;&lt; "open";
  
              avformat_close_input(&amp;format_context);
  
          }
  
          else
  
              qDebug() &lt;&lt; "error opening " &lt;&lt; argv[1];
  
      }    
  
      return 0;
  
  }
  
  </qdebug>

  Unfortunately, the linker fails :

  Undefined symbols for architecture x86_64:
  
    "avformat_open_input(AVFormatContext**, char const*, AVInputFormat*, AVDictionary**)", referenced from:
  
      _main in main.o
  
    "avformat_close_input(AVFormatContext**)", referenced from:
  
      _main in main.o

  I'm using Qt 5.1.0 on MacOS.