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opencv/3rdparty/ffmpeg
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Roman Donchenko dcaf923517 Merge remote-tracking branch 'origin/2.4' 
Conflicts:
	3rdparty/ffmpeg/ffmpeg_version.cmake
	cmake/OpenCVFindLibsGrfmt.cmake
	cmake/templates/cvconfig.h.cmake
	modules/bioinspired/doc/retina/index.rst
	modules/calib3d/doc/camera_calibration_and_3d_reconstruction.rst
	modules/calib3d/src/precomp.hpp
	modules/contrib/src/inputoutput.cpp
	modules/contrib/src/precomp.hpp
	modules/core/include/opencv2/core/internal.hpp
	modules/core/include/opencv2/core/types_c.h
	modules/core/src/drawing.cpp
	modules/core/src/precomp.hpp
	modules/core/src/system.cpp
	modules/features2d/doc/common_interfaces_of_descriptor_matchers.rst
	modules/features2d/doc/common_interfaces_of_feature_detectors.rst
	modules/features2d/include/opencv2/features2d/features2d.hpp
	modules/features2d/src/precomp.hpp
	modules/flann/src/precomp.hpp
	modules/gpu/doc/camera_calibration_and_3d_reconstruction.rst
	modules/gpu/doc/image_filtering.rst
	modules/gpu/doc/image_processing.rst
	modules/gpu/doc/video.rst
	modules/gpu/perf/perf_imgproc.cpp
	modules/gpu/perf4au/main.cpp
	modules/gpu/src/imgproc.cpp
	modules/gpu/src/precomp.hpp
	modules/gpu/test/test_imgproc.cpp
	modules/highgui/CMakeLists.txt
	modules/highgui/test/test_precomp.hpp
	modules/imgproc/doc/structural_analysis_and_shape_descriptors.rst
	modules/imgproc/src/precomp.hpp
	modules/java/generator/src/cpp/Mat.cpp
	modules/legacy/src/precomp.hpp
	modules/ml/doc/k_nearest_neighbors.rst
	modules/ml/src/precomp.hpp
	modules/nonfree/doc/feature_detection.rst
	modules/nonfree/src/precomp.hpp
	modules/objdetect/include/opencv2/objdetect/objdetect.hpp
	modules/objdetect/src/cascadedetect.cpp
	modules/objdetect/src/hog.cpp
	modules/objdetect/src/precomp.hpp
	modules/objdetect/test/test_latentsvmdetector.cpp
	modules/ocl/src/hog.cpp
	modules/ocl/src/opencl/objdetect_hog.cl
	modules/ocl/src/precomp.hpp
	modules/photo/src/precomp.hpp
	modules/stitching/src/precomp.hpp
	modules/superres/perf/perf_precomp.hpp
	modules/superres/src/optical_flow.cpp
	modules/superres/src/precomp.hpp
	modules/superres/test/test_precomp.hpp
	modules/ts/include/opencv2/ts.hpp
	modules/video/src/precomp.hpp
	modules/videostab/src/precomp.hpp
	modules/world/src/precomp.hpp
2013-08-06 13:56:49 +04:00
..
ffmpeg_version.cmake Merge remote-tracking branch 'origin/2.4' 2013-08-06 13:56:49 +04:00
ffopencv.c Remerged the 2.4.0 branch 2012-05-02 20:20:14 +00:00
make.bat updated opencv_ffmpeg build instructions 2011-08-16 13:15:20 +00:00
opencv_ffmpeg_64.dll Update FFMPEG wrapper binaries 2013-02-22 16:56:01 +04:00
opencv_ffmpeg.dll Update FFMPEG wrapper binaries 2013-02-22 16:56:01 +04:00
readme.txt Normalize whitespace in documentation and text files 2012-10-17 21:42:09 +04:00

readme.txt 

The build script is to be fixed.
Right now it assumes that 32-bit MinGW is in the system path and
64-bit mingw is installed to c:\Apps\MinGW64.

It is important that gcc is used, not g++!
Otherwise the produced DLL will likely be dependent on libgcc_s_dw2-1.dll or similar DLL.
While we want to make the DLLs with minimum dependencies: Win32 libraries + msvcrt.dll.

ffopencv.c is really a C++ source, hence -x c++ is used.

How to update opencv_ffmpeg.dll and opencv_ffmpeg_64.dll when a new version of FFMPEG is release?

1. Install 32-bit MinGW + MSYS from
   http://sourceforge.net/projects/mingw/files/Automated%20MinGW%20Installer/mingw-get-inst/
   Let's assume, it's installed in C:\MSYS32.
2. Install 64-bit MinGW. http://mingw-w64.sourceforge.net/
   Let's assume, it's installed in C:\MSYS64
3. Copy C:\MSYS32\msys to C:\MSYS64\msys. Edit C:\MSYS64\msys\etc\fstab, change C:\MSYS32 to C:\MSYS64.

4. Now you have working MSYS32 and MSYS64 environments.
   Launch, one by one, C:\MSYS32\msys\msys.bat and C:\MSYS64\msys\msys.bat to create your home directories.

4. Download ffmpeg-x.y.z.tar.gz (where x.y.z denotes the actual ffmpeg version).
   Copy it to C:\MSYS{32|64}\msys\home\<loginname> directory.

5. To build 32-bit ffmpeg libraries, run C:\MSYS32\msys\msys.bat and type the following commands:

   5.1. tar -xzf ffmpeg-x.y.z.tar.gz
   5.2. mkdir build
   5.3. cd build
   5.4. ../ffmpeg-x.y.z/configure --enable-w32threads
   5.5. make
   5.6. make install
   5.7. cd /local/lib
   5.8. strip -g *.a

6. Then repeat the same for 64-bit case. The output libs: libavcodec.a etc. need to be renamed to libavcodec64.a etc.

7. Then, copy all those libs to <opencv>\3rdparty\lib\, copy the headers to <opencv>\3rdparty\include\ffmpeg_.

8. Then, go to <opencv>\3rdparty\ffmpeg, edit make.bat
   (change paths to the actual paths to your msys32 and msys64 distributions) and then run make.bat