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• Catching native code exceptions in .NET

  30 avril 2014, par Acrotygma

  I’m currently working with ffmpeg with a proprietary wrapper and I need to catch native code exceptions that sometimes occur during transcoding procedures etc.

  I already read those questions/answers :

  https://stackoverflow.com/questions/10517199/cant-catch-native-exception-in-managed-code
  https://stackoverflow.com/questions/150544/can-you-catch-a-native-exception-in-c-sharp-code

  However, they were not really helpful as the exceptions occur not during a function I call, but in a completely different thread that runs side-by-side in the ffmpeg library and were thrown by additional components such as DirectX. This is somehow a real issue as the exceptions tear down my whole application !

  Any help is really appreciated.

• remove debug code

  2 septembre 2014, par Gemorroj

  remove debug code

• How to implement ffmpeg filter_complex in c++ code ?

  6 octobre 2020, par Fluffy

  I am trying to implement C++ code which uses an FFmpeg filter to merge 2 mono audio streams from input video into 1 stereo stream. The filter itself can be found easily enough in several sources :

  


  FFmpeg : How to merge all audio streams into stereo

  


  http://underpop.online.fr/f/ffmpeg/help/amerge.htm.gz

  


  My question relates to how I can implement this in code. I am using the exact same code found in the FFmpeg examples here :
https://ffmpeg.org/doxygen/trunk/filtering_audio_8c-example.html

  


  I just change the filter_descr variable to :

  


  static const char *filter_descr = "[0:1][0:2] amerge=inputs=2";


  


  When I use this I get the following exception :
Output pad "default" with type audio of the filter instance "in" of a buffer not connected to any destination
I get an Invalid Argument -22 exception when I'm configuring the filter graph

  


  if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)