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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (8855)

  • Using ffmpeg to split audio file at a particular tone

    7 juin 2017, par Victor

    I have a system that creates audio files of automated fire dispatches as wav files, and occasionally the file will record multiple calls separated by a multi-tone sequence. Here is a sample

    I have been searching for a way to have ffmpeg, or some other Linux CLI tool, recognise the tones and then cut the file into a separate WAV file named [unixtimestamp of original]+duration seconds.wav

    Does anyone have any ideas ?

  • How to capture image from Imaging device using FFmpeg on Windows7

    8 juin 2017, par Amol

    I am trying to capture an image from Imaging device using FFmpeg command line tool on windows platform, but no way found to do this using FFmpeg.

    I am using following :

    • Version of FFmpeg : ffmpeg-3.3.1-win32-static
    • O/S : Windows7 32 bit
    • Imaging device : QP0204 USB

    Any help would be appreciated.

  • Opencv crosscompile with ffmpeg and other 3rdparty for arm board

    16 juin 2017, par Little Tooth

    After buliding Qt5.5.1 for my arm board sucessfully, I am taking up to crosscompile opencv. Here are the steps :

    First, I crosscompile 3rdparty :

    a.libz

    lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf zlib-1.2.8.tar.gz
    
lmk@lmk-virtual-machine:/home/newdisk$ cd zlib-1.2.8
    
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo ./configure --prefix=/home/newdisk/optnew/opencv-rely -shared
    
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo vi Makefile

    and etit Makefile in some details :

    #Makefile
    
CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc
    
LDSHARED= /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map
    
AR=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-ar
    
RANLIB=arm-linux-ranlib

    the last step is run make and make install :

    lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/zlib-1.2.8$ sudo make install

    b.libjpeg

    lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf jpegsrc.v9.tar.gz
    
lmk@lmk-virtual-machine:/home/newdisk$ cd jpeg-9
    
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --host=arm-linux --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --enable-static
    
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/jpeg-9$ sudo make install

    c.libpng

    lmk@lmk-virtual-machine:/home/newdisk$ sudo xz -d libpng-1.6.29.tar.xz
    
lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -xvf libpng-1.6.29.tar
    
lmk@lmk-virtual-machine:/home/newdisk$ cd libpng-1.6.29
    
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --host=arm-linux --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --enable-static
    
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/libpng-1.6.29$ sudo make install

    d.yasm

    lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -zvxf yasm-1.3.0.tar.gz
    
lmk@lmk-virtual-machine:/home/newdisk$ cd yasm-1.3.0
    
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --prefix=/home/newdisk/optnew/opencv-rely --host=arm-linux
    
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/yasm-1.3.0$ sudo make install

    e.libx264

    lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -jxvf last_x264.tar.bz2
    
lmk@lmk-virtual-machine:/home/newdisk$ cd x264-snapshot-20170612-2245 
    
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --enable-shared --host=arm-linux --disable-asm --prefix=/home/newdisk/optnew/opencv-rely
    
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/x264-snapshot-20170612-2245$ sudo make install

    f.libxvid

    lmk@lmk-virtual-machine:/home/newdisk$ cd xvidcore-1.3.3
    
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3$ cd build/generic
    
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo CC=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc ./configure --prefix=/home/newdisk/optnew/opencv-rely --host=arm-linux  --disable-assembly
    
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/xvidcore-1.3.3/build/generic$ sudo make install

    g.ffmpeg

    lmk@lmk-virtual-machine:/home/newdisk$ sudo tar -jvxf ffmpeg-3.3.2.tar.bz2
    
lmk@lmk-virtual-machine:/home/newdisk$ cd ffmpeg-3.3.2
    
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$
    
sudo ./configure --prefix=/home/newdisk/optnew/opencv-rely --enable-shared --disable-static --enable-gpl --enable-cross-compile  --arch=arm --disable-stripping --target-os=linux --enable-libx264 --enable-libxvid --cc=/home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-none-linux-gnueabi-gcc --enable-swscale --extra-ldflags=-L/home/newdisk/optnew/opencv-rely/lib --extra-cflags=-I/home/newdisk/optnew/opencv-rely/include
    
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$ sudo make
    
lmk@lmk-virtual-machine:/home/newdisk/ffmpeg-3.3.2$ sudo make install

    There is no problem in 3rdparty crosscompile.
    Next, opencv crosscompile :

    lmk@lmk-virtual-machine:/home/newdisk$ sudo unzip opencv-3.1.0.zip
    
lmk@lmk-virtual-machine:/home/newdisk$ cd opencv-3.1.0
    
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0$ sudo mkdir BuildOpencv
    
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0$ cd BuildOpencv
    
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo vim toolchain.cmake
    
#toolchain.cmake
    
###########user defined#############
    
set( CMAKE_SYSTEM_NAME Linux )
    
set( CMAKE_SYSTEM_PROCESSOR arm )
    
set( CMAKE_C_COMPILER /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-gcc )
    
set( CMAKE_CXX_COMPILER /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ )
    
###########user defined#############
    
set( CMAKE_FIND_ROOT_PATH /home/newdisk/optnew/opencv-rely)
    
set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
    
set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
    
set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
    
######################################

    Then I run cmake :

    lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo cmake -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake ../

    Here is the result：

    -- Detected version of GNU GCC: 45 (405)
    
-- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found suitable version "1.2.8", minimum required is "1.2.3") 
    
-- Could NOT find TIFF (missing:  TIFF_LIBRARY TIFF_INCLUDE_DIR) 
    
-- Could NOT find Jasper (missing:  JASPER_LIBRARIES) (found version "1.900.1")
    
-- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found version "1.2.8") 
    
-- checking for module 'gtk+-3.0'
    
--   package 'gtk+-3.0' not found
    
-- checking for module 'gstreamer-base-1.0'
    
--   package 'gstreamer-base-1.0' not found
    
-- checking for module 'gstreamer-video-1.0'
    
--   package 'gstreamer-video-1.0' not found
    
-- checking for module 'gstreamer-app-1.0'
    
--   package 'gstreamer-app-1.0' not found
    
-- checking for module 'gstreamer-riff-1.0'
    
--   package 'gstreamer-riff-1.0' not found
    
-- checking for module 'gstreamer-pbutils-1.0'
    
--   package 'gstreamer-pbutils-1.0' not found
    
-- checking for module 'gstreamer-base-0.10'
    
--   package 'gstreamer-base-0.10' not found
    
-- checking for module 'gstreamer-video-0.10'
    
--   package 'gstreamer-video-0.10' not found
    
-- checking for module 'gstreamer-app-0.10'
    
--   package 'gstreamer-app-0.10' not found
    
-- checking for module 'gstreamer-riff-0.10'
    
--   package 'gstreamer-riff-0.10' not found
    
-- checking for module 'gstreamer-pbutils-0.10'
    
--   package 'gstreamer-pbutils-0.10' not found
    
-- Looking for linux/videodev.h
    
-- Looking for linux/videodev.h - found
    
-- Looking for linux/videodev2.h
    
-- Looking for linux/videodev2.h - found
    
-- Looking for sys/videoio.h
    
-- Looking for sys/videoio.h - not found
    
-- checking for module 'libavresample'
    
--   package 'libavresample' not found
    
-- Looking for libavformat/avformat.h
    
-- Looking for libavformat/avformat.h - not found
    
-- Looking for ffmpeg/avformat.h
    
-- Looking for ffmpeg/avformat.h - not found
    
-- checking for module 'libgphoto2'
    
 --   package 'libgphoto2' not found
    
-- Could NOT find Doxygen (missing:  DOXYGEN_EXECUTABLE) 
    
-- To enable PlantUML support, set PLANTUML_JAR environment variable or pass -DPLANTUML_JAR=<filepath> option to cmake
    
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.6", minimum required is "2.7") 
    
-- Could NOT find PythonLibs (missing:  PYTHON_LIBRARIES) (found suitable version "2.7.6", minimum required is "2.7")
    
-- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
    
-- If you want to enable Python/Numpy support, set the following variables:
    
--   PYTHON2_INCLUDE_PATH
    
--   PYTHON2_LIBRARIES
    
--   PYTHON2_NUMPY_INCLUDE_DIRS
    
--   PYTHON3_INCLUDE_PATH
    
--   PYTHON3_LIBRARIES
    
--   PYTHON3_NUMPY_INCLUDE_DIRS
    
-- Found PythonInterp: /usr/bin/python3.4 (found suitable version "3.4.3", minimum required is "3.4") 
    
-- Could NOT find PythonLibs (missing:  PYTHON_LIBRARIES) (Required is at least version "3.4")
    
-- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
    
-- If you want to enable Python/Numpy support, set the following variables:
    
--   PYTHON2_INCLUDE_PATH
    
--   PYTHON2_LIBRARIES
    
--   PYTHON2_NUMPY_INCLUDE_DIRS
    
--   PYTHON3_INCLUDE_PATH
    
--   PYTHON3_LIBRARIES
    
--   PYTHON3_NUMPY_INCLUDE_DIRS
    
-- Could NOT find JNI (missing:  JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) 
    
-- Could NOT find Matlab (missing:  MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIRS MATLAB_ROOT_DIR MATLAB_LIBRARIES MATLAB_LIBRARY_DIRS MATLAB_MEXEXT MATLAB_ARCH MATLAB_BIN) 
    
-- 
    
-- General configuration for OpenCV 3.1.0 
    
=====================================
    
--   Version control:               unknown
    
-- 
    
--   Platform:
    
--     Host:                        Linux 3.16.0-77-generic i686
    
--     Target:                      Linux arm
    
--     CMake:                       2.8.12.2
    
--     CMake generator:             Unix Makefiles
    
--     CMake build tool:            /usr/bin/make
    
--     Configuration:               Release
    
-- 
    
--   C/C++:
    
--     Built as dynamic libs?:      YES
    
--     C++ Compiler:                /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++  (ver 4.5.1)
    
--     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    
--     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    
--     C Compiler:                  /home/newdisk/optnew/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-gcc
    
--     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    
--     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    
--     Linker flags (Release):      
    
--     Linker flags (Debug):        
    
--     Precompiled headers:         YES
    
--     Extra dependencies:          /home/newdisk/optnew/opencv-rely/lib/libjpeg.so /home/newdisk/optnew/opencv-rely/lib/libpng.so /home/newdisk/optnew/opencv-rely/lib/libz.so gtk-x11-2.0 gdk-x11-2.0 atk-1.0 gio-2.0 pangoft2-1.0 pangocairo-1.0 gdk_pixbuf-2.0 cairo pango-1.0 fontconfig gobject-2.0 freetype gthread-2.0 glib-2.0 dc1394 v4l1 v4l2 avcodec avformat avutil swscale dl m pthread rt
    
--     3rdparty dependencies:       libwebp libtiff libjasper IlmImf
    
-- 
    
--   OpenCV modules:
    
--     To be built:                 core flann imgproc ml photo video imgcodecs shape videoio highgui objdetect superres ts features2d calib3d stitching videostab
    
--     Disabled:                    world
    
--     Disabled by dependency:      -
    
--     Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 python3 viz
    
-- 
    
--   GUI: 
    
--     QT:                          NO
    
--     GTK+ 2.x:                    YES (ver 2.24.23)
    
--     GThread :                    YES (ver 2.40.2)
    
--     GtkGlExt:                    NO
    
--     OpenGL support:              NO
    
--     VTK support:                 NO
    
-- 
    
--   Media I/O: 
    
--     ZLib:                        /home/newdisk/optnew/opencv-rely/lib/libz.so (ver 1.2.8)
    
--     JPEG:                        /home/newdisk/optnew/opencv-rely/lib/libjpeg.so (ver 90)
    
--     WEBP:                        build (ver 0.3.1)
    
--     PNG:                         /home/newdisk/optnew/opencv-rely/lib/libpng.so (ver 1.6.29)
    
--     TIFF:                        build (ver 42 - 4.0.2)
    
--     JPEG 2000:                   build (ver 1.900.1)
    
--     OpenEXR:                     build (ver 1.7.1)
    
--     GDAL:                        NO
    
-- 
    
--   Video I/O:
    
--     DC1394 1.x:                  NO
    
--     DC1394 2.x:                  YES (ver 2.2.1)
    
--     FFMPEG:                      YES
    
--       codec:                     YES (ver 54.35.1)
    
--       format:                    YES (ver 54.20.4)
    
--       util:                      YES (ver 52.3.0)
    
--       swscale:                   YES (ver 2.1.1)
    
--       resample:                  NO
    
--       gentoo-style:              YES
    
--     GStreamer:                   NO
    
--     OpenNI:                      NO
    
--     OpenNI PrimeSensor Modules:  NO
    
--     OpenNI2:                     NO
    
--     PvAPI:                       NO
    
--     GigEVisionSDK:               NO
    
--     UniCap:                      NO
    
--     UniCap ucil:                 NO
    
--     V4L/V4L2:                    Using libv4l1 (ver 0.8.8) / libv4l2 (ver 0.8.8)
    
--     XIMEA:                       NO
    
--     Xine:                        NO
    
--     gPhoto2:                     NO
    
-- 
    
--   Parallel framework:            pthreads
    
-- 
    
--   Other third-party libraries:
    
--     Use IPP:                     NO
    
--     Use VA:                      NO
    
--     Use Intel VA-API/OpenCL:     NO
    
--     Use Eigen:                   NO
    
--     Use Cuda:                    NO
    
--     Use OpenCL:                  YES
    
--     Use custom HAL:              NO
    
-- 
    
--   OpenCL:
    
--     Version:                     dynamic
    
--     Include path:                /home/newdisk/opencv-3.1.0/3rdparty/include/opencl/1.2
    
--     Use AMDFFT:                  NO
    
--      Use AMDBLAS:                 NO
    
-- 
    
--   Python 2:
    
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.6)
    
-- 
    
--   Python 3:
    
--     Interpreter:                 /usr/bin/python3.4 (ver 3.4.3)
    
-- 
    
--   Python (for build):            /usr/bin/python2.7
    
-- 
    
--   Java:
    
--     ant:                         NO
    
--     JNI:                         NO
    
--     Java wrappers:               NO
    
--     Java tests:                  NO
    
-- 
    
--   Matlab:                        Matlab not found or implicitly disabled
    
-- 
    
--   Documentation:
    
--     Doxygen:                     NO
    
--     PlantUML:                    NO
    
-- 
    
--   Tests and samples:
    
--     Tests:                       YES
    
--     Performance tests:           YES
    
--     C/C++ Examples:              NO
    
-- 
    
--   Install path:                  /home/newdisk/opencv-3.1.0/BuildOpencv/install
    
-- 
    
--   cvconfig.h is in:              /home/newdisk/opencv-3.1.0/BuildOpencv
    
-- -----------------------------------------------------------------
    
-- 
    
-- Configuring done
    
-- Generating done
    
-- Build files have been written to: /home/newdisk/opencv-3.1.0/BuildOpencv
    
</filepath>

    After configuring and generating, run cmake-gui :

    lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo cmake-gui
    

    
Src:/home/newdisk/opencv-3.1.0
    
Build:/home/newdisk/opencv-3.1.0/BuildOpencv
    

    
CMAKE_INSTALL_PREFIX:/home/newdisk/optnew/opencv-arm
    

    
Don't choose these items:
    
WITH_CUDA
    
WITH_GTK
    
WITH_1394
    
WITH_GSTREAMER
    
WITH_LIBV4L 
    
WITH_TIFF
    
BUILD_OPENEXR
    
WITH_OPENEXR
    
WITH_OPENCL
    

    
Configure and generate.
    

    
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo vi CMakeCache.txt
    
#CMakeCache.txt
    
//Flags used by the linker.
    
CMAKE_EXE_LINKER_FLAGS:STRING=-lpthread -lrt
    

    
lmk@lmk-virtual-machine:/home/newdisk/opencv-3.1.0/BuildOpencv$ sudo make

    Fianlly,I got these errors :

    [ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.o
    
[ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_v4l.cpp.o
    
[ 27%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o
    
In file included from /home/newdisk/opencv-3.1.0/modules/videoio/src/cap_ffmpeg_impl.hpp:65:0,
    
             from /home/newdisk/opencv-3.1.0/modules/videoio/src/cap_ffmpeg.cpp:45:
    
/home/newdisk/opencv-3.1.0/modules/videoio/src/ffmpeg_codecs.hpp:77:36: fatal error: libavformat/avformat.h: No such file or directory
    
compilation terminated.
    
make[2]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_ffmpeg.cpp.o] Error 1
    
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
    
make: *** [all] Error 2

    While the file libavformat/avformat.h does exits in my directory
    /home/newdisk/optnew/opencv-rely/include

    Why can cmake find lib directory

    -- Found ZLIB: /home/newdisk/optnew/opencv-rely/lib/libz.so (found suitable version "1.2.8", minimum required is "1.2.3")

    but cannot find include directory ?

    /home/newdisk/optnew/opencv-rely/include

    Do you have any idea ?

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