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  • Error "sys/videoio.h - not found" OpenCV 3.1.0

    9 juin 2020, par Jefferson Rodriguez

    
I using Elementary OS and I'm trying to install OpenCV 3.1.0, I follow the instructions of http://docs.opencv.org/3.0-beta/doc/tutorials/introduction/linux_install/linux_install.html
    
Also, I have installed libav 11.7 and ffmpeg 3.1.3
    
but, after cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
I get :
    
— 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
    
— Looking for libavformat/avformat.h
    
— Looking for libavformat/avformat.h - found
    
— Looking for ffmpeg/avformat.h
    
— Looking for ffmpeg/avformat.h - not found
    
— checking for module 'libgphoto2'
    
— package 'libgphoto2' not found
    
And after make,
    
I get :
    &#xA;../../lib/libopencv_videoio.so.3.1.0 : referencia a av_frame_alloc&#x27; sin definir <br />&#xA;../../lib/libopencv_videoio.so.3.1.0: referencia aav_frame_free' sin definir
    &#xA;collect2 : error : ld returned 1 exit status
    &#xA;make[2] : * [bin/opencv_test_video] Error 1
    &#xA;make[1] : *     [modules/video/CMakeFiles/opencv_test_video.dir/all] Error 2&#xA;

    &#xA;&#xA;

    someone who can help me ?

    &#xA;

  • Error "sys/videoio.h - not found" OpenCV 3.1.0

    22 mars 2017, par Jefferson Rodriguez

    I using Elementary OS and I’m trying to install OpenCV 3.1.0, I follow the instructions of http://docs.opencv.org/3.0-beta/doc/tutorials/introduction/linux_install/linux_install.html
    Also, I have installed libav 11.7 and ffmpeg 3.1.3
    but, after cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
    I get :

    — 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

    — Looking for libavformat/avformat.h

    — Looking for libavformat/avformat.h - found

    — Looking for ffmpeg/avformat.h

    — Looking for ffmpeg/avformat.h - not found

    — checking for module ’libgphoto2’

    — package ’libgphoto2’ not found
    And after make,
    I get :
    ../../lib/libopencv_videoio.so.3.1.0 : referencia a

    av_frame_alloc' sin definir <br />
    ../../lib/libopencv_videoio.so.3.1.0: referencia a

    av_frame_free’ sin definir
    collect2 : error : ld returned 1 exit status
    make[2] : * [bin/opencv_test_video] Error 1
    make[1] : *     [modules/video/CMakeFiles/opencv_test_video.dir/all] Error 2

    someone who can help me ?

  • Combine two clips from two different videos into one video with javascript (client side) ?

    13 avril 2018, par Mike Johnson Jr

    Does anyone know if this is possible ?

    The closest thing I found to what I am looking for is this : http://bgrins.github.io/videoconverter.js/

    But the "docs" are very minimal.

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