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MacOS and OpenCV

开发者 https://www.devze.com 2023-01-06 15:28 出处：网络

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.

相关专题：macos 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 ?

Using opencv-cocoa does the trick !

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

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