MacOS and OpenCV

Morning SO.

I would like to compile openCV to make it work on a webcam capture using Qt 4.7. For that purpose, OpenCV must be compiled for a 64bit system.

So, I've tried 3 compilations :

• Compiling from the source with cmake :

  sudo cmake -G "Unix Makefiles" .
  

  it works, but I can't dump a video into a file using cvCre开发者_Python百科ateVideoWriter : the output file is empty.

• using macports :

  sudo port install opencv
  

  it's not that great because it depends on gtk2, ffmpeg and the libX .. and there is no image captured.

• using the compiled framework

  the framework is compiled for 32 bit system only.

Does anyone have an idea ?

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Using opencv-cocoa does the trick !

http://code.google.com/p/opencv-cocoa/

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I think CMake is the best choice. Your problem with cvCreateVideoWriter is probably related to a missing video codec.