In order to install OpenCV 2.4.2 with ffmpeg support we have to first install lamemp3, faac, faad and of course ffmpeg. I’ve added a new script in my installation-scripts repository in Github but I’m going to write down here installing one by one all the libraries.
Also remember that you need to install the “Command Line Tools” in order to compile from the command line if you are using Xcode 4.4 or above. Have a look at “Can’t configure with cmake in Mac OS X 10.8” before continuing the installation process.
mp3lame:
curl -L -o lame-3.99.5.tar.gz http://sourceforge.net/projects/lame/files/lame/3.99/lame-3.99.5.tar.gz/download tar xzvf lame-3.99.5.tar.gz cd lame-3.99.5 ./configure --disable-dependency-tracking CFLAGS="-arch i386 -arch x86_64" LDFLAGS="-arch i386 -arch x86_64" make sudo make install cd ..
faac (notice that only compiles for x86_64):
curl -L -o faac-1.28.tar.gz http://sourceforge.net/projects/faac/files/faac-src/faac-1.28/faac-1.28.tar.gz/download tar xzvf faac-1.28.tar.gz cd faac-1.28 ./configure --disable-dependency-tracking CFLAGS="-arch x86_64" LDFLAGS="-arch x86_64" make sudo make install cd ..
faad:
curl -L -o faad2-2.7.tar.gz http://sourceforge.net/projects/faac/files/faad2-src/faad2-2.7/faad2-2.7.tar.gz/download tar xvzf faad2-2.7.tar.gz cd faad2-2.7 ./configure --disable-dependency-tracking CFLAGS="-arch i386 -arch x86_64" LDFLAGS="-arch i386 -arch x86_64" make sudo make install cd ..
ffmpeg:
curl -O http://ffmpeg.org/releases/ffmpeg-0.11.1.tar.gz tar xzvf ffmpeg-0.11.1.tar.gz cd ffmpeg-0.11.1 ./configure --enable-libmp3lame --enable-libfaac --enable-nonfree --enable-shared --enable-pic --disable-mmx --arch=x86_64 make sudo make install cd ..
OpenCV 2.4.2:
curl -L -o OpenCV-2.4.2.tar.bz2 http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.2/OpenCV-2.4.2.tar.bz2/download tar xvzf OpenCV-2.4.2.tar.bz2 cd OpenCV-2.4.2
If we configure and compile OpenCV 2.4.2 as it comes we will get a linker error at about 34% of the compilation process like this:
Linking CXX shared library ../../lib/libopencv_highgui.dylib
Undefined symbols for architecture x86_64:
"_faacEncClose", referenced from:
_Faac_encode_close in libavcodec.a(libfaac.o)
_Faac_encode_init in libavcodec.a(libfaac.o)
"_faacEncEncode", referenced from:
_Faac_encode_frame in libavcodec.a(libfaac.o)
"_faacEncGetCurrentConfiguration", referenced from:
_Faac_encode_init in libavcodec.a(libfaac.o)
"_faacEncGetDecoderSpecificInfo", referenced from:
_Faac_encode_init in libavcodec.a(libfaac.o)
"_faacEncOpen", referenced from:
_Faac_encode_init in libavcodec.a(libfaac.o)
"_faacEncSetConfiguration", referenced from:
_Faac_encode_init in libavcodec.a(libfaac.o)
"_lame_close", referenced from:
_mp3lame_encode_close in libavcodec.a(libmp3lame.o)
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_encode_buffer", referenced from:
_mp3lame_encode_frame in libavcodec.a(libmp3lame.o)
"_lame_encode_buffer_float", referenced from:
_mp3lame_encode_frame in libavcodec.a(libmp3lame.o)
"_lame_encode_buffer_int", referenced from:
_mp3lame_encode_frame in libavcodec.a(libmp3lame.o)
"_lame_encode_buffer_interleaved", referenced from:
_mp3lame_encode_frame in libavcodec.a(libmp3lame.o)
"_lame_encode_flush", referenced from:
_mp3lame_encode_frame in libavcodec.a(libmp3lame.o)
"_lame_get_encoder_delay", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_get_framesize", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_init", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_init_params", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_VBR", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_VBR_quality", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_bWriteVbrTag", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_brate", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_disable_reservoir", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_in_samplerate", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_mode", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_num_channels", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_out_samplerate", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
"_lame_set_quality", referenced from:
_mp3lame_encode_init in libavcodec.a(libmp3lame.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_highgui.2.4.2.dylib] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make: *** [all] Error 2
To solve this problem we have to change modules/highgui/CMakeLists.txt and add just before if(HAVE_FFMPEG) (on line 158) the following text:
if(APPLE)
list(APPEND HIGHGUI_LIBRARIES ${BZIP2_LIBRARIES} -lmp3lame -lfaac -lbz2)
endif(APPLE)
Or we could apply this patch to OpenCV 2.4.2:
--- modules/highgui/CMakeLists.txt.old 2012-07-27 15:46:52.000000000 +0200
+++ modules/highgui/CMakeLists.txt 2012-07-27 15:47:05.000000000 +0200
@@ -155,6 +155,10 @@
list(APPEND HIGHGUI_LIBRARIES m3api)
endif(HAVE_XIMEA)
+if(APPLE)
+ list(APPEND HIGHGUI_LIBRARIES ${BZIP2_LIBRARIES} -lmp3lame -lfaac -lbz2)
+endif(APPLE)
+
if(HAVE_FFMPEG)
if(UNIX AND BZIP2_LIBRARIES)
list(APPEND HIGHGUI_LIBRARIES ${BZIP2_LIBRARIES})
Now we can configure, compile and install it as usual. If you want to know more configuration options of cmake for OpenCV you can have a look at “Install OpenCV 2.3.1a in Mac OS X 10.6“.
mkdir build cmake .. make sudo make install cd ..
Source: http://blog.yageek.net/2012/06/compile-opencv-241-on-mac-os-x-lion.html
It helps a lot. Do you know how to utilize ffmpeg writing videos under XCode? I can’t make the VideoWriter work with the OpenCV 2.4.2. I hope you can help me out with this if you know the solution.
Sorry but I’ve never used ffmpeg to write videos. You should look at the oficial documentation for an example or something like that.
FFMPEG on MAC patch outlined above is still required for Open CV 2.4.3 as well.
Ditto with Open CV 2.4.6.1.
GREAT STUFF!
Thanks for the tutorial .. I have successfully installed and have a working simple opencv videocapture application. The capture happens from a file, but I have been unsuccessfully in deploying this application onto a different computer the one without opencv or ffmpeg. More info the question here: http://stackoverflow.com/questions/15299691/opencv-ffmpeg-video-capture-filename-avi-crashes-on-a-non-development-machi
If it works in your development computer but does not in another computer it should be a problem in the libraries. You should try installing the exact same versions of OpenCV, ffmpeg and Qt in the other computer. I don’t know anything about otool and the deployment proccess of apps with it. Probably it’s a problem in the paths.
By the way, in your code you resize the image to 604×480 and I’m pretty sure you want to resize it to 640×480.
Hi enekochan,..Yes, if I install those libraries on the other system it works fine, its only when I try and package an application this happens. I have been going throught the app bundle for the last 8hours to make sure each of the dependency is correctly linked. Looks like a bug in the opencv ffmpeg, or the qt end.
And yes it was suppose to 640 x 480…thanks for pointing it out.
Hey thanks for the tutorial, I’ve been looking for something like this. I’m having a problem when i make faad.
ld: warning: ignoring file ../common/mp4ff/libmp4ff.a, file was built for archive which is not the architecture being linked (i386): ../common/mp4ff/libmp4ff.a
Undefined symbols for architecture i386:
“_main”, referenced from:
start in crt1.10.6.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
lipo: can’t open input file: /var/tmp//ccJylCwD.out (No such file or directory)
make[2]: *** [faad] Error 1
make[1]: *** [all-recursive] Error 1
Thanks,
Still usefull one year later
Thanks!
I can’t believe that the more “official” opencv web pages don’t mention any of this. One has to google to find such information.
You are a life saver man!
cheers
I have changed modules/highgui/CMakeLists.txt. But I have a problem.
ld: library not found for -lmp3lame
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_highgui.2.9.0.dylib] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs….
Linking CXX shared library ../../lib/libopencv_photo.dylib
Can you give me a favour?
Look at “library not found for -lmp3lame”. It seems you didn’t install correctly the mp3lame library.
I changed “-lmp3lame” into “/usr/local/lib/libmp3lame.dylib”. Then it can be made.
Hey Sophia,
I am also have the same issue,
“Linking CXX shared library ../../lib/libopencv_highgui.dylib
ld: library not found for -lmp3lame
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [lib/libopencv_highgui.2.4.6.dylib] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
make: *** [all] Error 2″
I couldn’t understand what you exactly did, can you please elaborate? Where do you find “-lmp3lame”? and How do you change it into “/usr/local/lib/libmp3lame.dylib” ?
Your help is much appreciated.
Thank you,
Surya.