如何在Ubuntu 11.10解決的OpenCV 2.3.1編譯錯誤，由於FFmpeg的

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compile opencv2.3.1 in ubuntu 11.10

如何準備你的環境，這樣你就可以正確地在Ubuntu 11.10編譯OpenCV的2.3.1？

我遵循OpenCV install guide，但它的指令非常複雜。

不過，我蒸成以下腳本：

sudo apt-get install --yes cmake libjpeg62 libjpeg62-dev libtiff4 libtiff4-dev libjasper1 libjasper-dev libpng12-0 libpng12-dev libavformat-dev libswscale-dev openexr zlibc zlib1g zlib1g-dev python2.7-dev libgtk-3-dev gcc g++ libtbb-dev 
cd /tmp 
wget --output-document=OpenCV-2.3.1a.tar.bz2 http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.3.1/OpenCV-2.3.1a.tar.bz2/download?use_mirror=iweb 
tar -xvjf OpenCV-2.3.1a.tar.bz2 
cd OpenCV-2.3.1 
mkdir release 
cd release 
time cmake -D WITH_TBB=ON -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_PYTHON_SUPPORT=ON -D BUILD_EXAMPLES=ON .. 
time make 

一切都成功地運行，當然除了make與錯誤退出：

/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1339:41: error: ‘guess_format’ was not declared in this scope 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1367:31: error: ‘av_alloc_format_context’ was not declared in this scope 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1411:9: warning: ‘int av_set_parameters(AVFormatContext*, AVFormatParameters*)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1363) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1411:35: warning: ‘int av_set_parameters(AVFormatContext*, AVFormatParameters*)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1363) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1415:5: warning: ‘void dump_format(AVFormatContext*, int, const char*, int)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1485) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1415:35: warning: ‘void dump_format(AVFormatContext*, int, const char*, int)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1485) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1442:15: warning: ‘int avcodec_open(AVCodecContext*, AVCodec*)’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:3650) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1442:36: warning: ‘int avcodec_open(AVCodecContext*, AVCodec*)’ is deprecated (declared at /usr/include/libavcodec/avcodec.h:3650) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1479:13: warning: ‘int url_fopen(AVIOContext**, const char*, int)’ is deprecated (declared at /usr/include/libavformat/avio.h:278) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1479:52: warning: ‘int url_fopen(AVIOContext**, const char*, int)’ is deprecated (declared at /usr/include/libavformat/avio.h:278) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1485:5: warning: ‘int av_write_header(AVFormatContext*)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1421) [-Wdeprecated-declarations] 
/tmp/OpenCV-2.3.1/modules/highgui/src/cap_ffmpeg_impl.hpp:1485:25: warning: ‘int av_write_header(AVFormatContext*)’ is deprecated (declared at /usr/include/libavformat/avformat.h:1421) [-Wdeprecated-declarations] 
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.o] Error 1 
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2 
make: *** [all] Error 2 

我該如何解決這個錯誤？

Answer 1

我認爲你沒有很好的ffmpeg庫。至少有兩種解決方案。 如果你需要的ffmpeg，嘗試安裝它感謝：

sudo apt-get install libavformat-dev libswscale-dev 

如果你不需要在你的OpenCV的應用程序中使用的ffmpeg，你可以嘗試禁用它補充說：

WITH_FFMPEG=OFF WITH_GSTREAMER=OFF 

到你的cmake配置行。

乾杯，