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# --- FFMPEG ---
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if(NOT HAVE_FFMPEG AND OPENCV_FFMPEG_USE_FIND_PACKAGE)
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if(OPENCV_FFMPEG_USE_FIND_PACKAGE STREQUAL "1" OR OPENCV_FFMPEG_USE_FIND_PACKAGE STREQUAL "ON")
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set(OPENCV_FFMPEG_USE_FIND_PACKAGE "FFMPEG")
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endif()
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find_package(${OPENCV_FFMPEG_USE_FIND_PACKAGE}) # Required components: AVCODEC AVFORMAT AVUTIL SWSCALE
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if(FFMPEG_FOUND OR FFmpeg_FOUND)
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set(HAVE_FFMPEG TRUE)
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endif()
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endif()
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if(NOT HAVE_FFMPEG AND WIN32 AND NOT ARM AND NOT OPENCV_FFMPEG_SKIP_DOWNLOAD)
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include("${OpenCV_SOURCE_DIR}/3rdparty/ffmpeg/ffmpeg.cmake")
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download_win_ffmpeg(FFMPEG_CMAKE_SCRIPT)
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if(FFMPEG_CMAKE_SCRIPT)
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include("${FFMPEG_CMAKE_SCRIPT}")
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set(FFMPEG_libavcodec_VERSION ${FFMPEG_libavcodec_VERSION} PARENT_SCOPE) # info
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set(FFMPEG_libavformat_VERSION ${FFMPEG_libavformat_VERSION} PARENT_SCOPE) # info
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set(FFMPEG_libavutil_VERSION ${FFMPEG_libavutil_VERSION} PARENT_SCOPE) # info
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set(FFMPEG_libswscale_VERSION ${FFMPEG_libswscale_VERSION} PARENT_SCOPE) # info
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set(FFMPEG_libavresample_VERSION ${FFMPEG_libavresample_VERSION} PARENT_SCOPE) # info
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set(HAVE_FFMPEG TRUE)
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set(HAVE_FFMPEG_WRAPPER TRUE)
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endif()
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endif()
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if(NOT HAVE_FFMPEG AND PKG_CONFIG_FOUND)
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pkg_check_modules(FFMPEG libavcodec libavformat libavutil libswscale QUIET)
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pkg_check_modules(FFMPEG_libavresample libavresample QUIET) # optional
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if(FFMPEG_FOUND)
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if(FFMPEG_libavresample_FOUND)
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list(APPEND FFMPEG_LIBRARIES ${FFMPEG_libavresample_LIBRARIES})
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endif()
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# rewrite libraries to absolute paths
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foreach(lib ${FFMPEG_LIBRARIES})
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find_library(FFMPEG_ABSOLUTE_${lib} "${lib}" PATHS "${FFMPEG_lib${lib}_LIBDIR}" NO_DEFAULT_PATH)
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if(FFMPEG_ABSOLUTE_${lib})
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list(APPEND ffmpeg_abs_libs "${FFMPEG_ABSOLUTE_${lib}}")
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else()
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list(APPEND ffmpeg_abs_libs "${lib}")
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endif()
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endforeach()
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set(FFMPEG_LIBRARIES "${ffmpeg_abs_libs}" CACHE INTERNAL "" FORCE)
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set(HAVE_FFMPEG TRUE)
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endif()
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endif()
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#==================================
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if(HAVE_FFMPEG AND NOT HAVE_FFMPEG_WRAPPER)
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try_compile(__VALID_FFMPEG
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"${OpenCV_BINARY_DIR}"
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"${OpenCV_SOURCE_DIR}/cmake/checks/ffmpeg_test.cpp"
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CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${FFMPEG_INCLUDE_DIRS}"
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"-DLINK_LIBRARIES:STRING=${FFMPEG_LIBRARIES}"
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OUTPUT_VARIABLE TRY_OUT
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)
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if(NOT __VALID_FFMPEG)
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# message(FATAL_ERROR "FFMPEG: test check build log:\n${TRY_OUT}")
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message(STATUS "WARNING: Can't build ffmpeg test code")
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set(HAVE_FFMPEG FALSE)
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endif()
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endif()
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#==================================
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if(HAVE_FFMPEG)
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set(defs "HAVE_FFMPEG")
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if(HAVE_FFMPEG_WRAPPER)
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list(APPEND defs "HAVE_FFMPEG_WRAPPER")
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endif()
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ocv_add_external_target(ffmpeg "${FFMPEG_INCLUDE_DIRS}" "${FFMPEG_LIBRARIES}" "${defs}")
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endif()
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set(HAVE_FFMPEG ${HAVE_FFMPEG} PARENT_SCOPE)
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