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  • errors while cmake compiling ffmpeg with custom libx265 which has opencv code in it

    10 mai 2017, par Gibran

    i have changed libx265 with my code. now the new code dependency of opencv in it. so i changed the CMakeLists.txt of x265 source to solve it. i run exactly what i want it to do.
    But when i compile it and add library as an external library in ffmpeg. ffmpeg gives the same dependency error of OpenCV like before because of this library. see the log below of ffmpeg.

    there is a configure file in ffmpeg i think by adding OpenCv dependency in it.

    check_pkg_config x265 x265.h x265_api_get
    
pkg-config --exists --print-errors x265
    
check_func_headers x265.h x265_api_get -I/home/ryuk666/ffmpeg_build/include -L/home/ryuk666/ffmpeg_build/lib -lx265 -lstdc++ -lm -lrt -ldl
    
check_ld cc -I/home/ryuk666/ffmpeg_build/include -L/home/ryuk666/ffmpeg_build/lib -lx265 -lstdc++ -lm -lrt -ldl
    
check_cc -I/home/ryuk666/ffmpeg_build/include -L/home/ryuk666/ffmpeg_build/lib
    
BEGIN /tmp/ffconf.fTnjzKqn.c
    
    1   #include 
    
    2   #include 
    
    3   long check_x265_api_get(void) { return (long) x265_api_get; }
    
    4   int main(void) { int ret = 0;
    
    5    ret |= ((intptr_t)check_x265_api_get) & 0xFFFF;
    
    6   return ret; }
    
END /tmp/ffconf.fTnjzKqn.c
    
gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -I/home/ryuk666/ffmpeg_build/include -std=c11 -fomit-frame-pointer -pthread -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/freetype2 -I/usr/include/opus -I/home/ryuk666/ffmpeg_build/include -L/home/ryuk666/ffmpeg_build/lib -c -o /tmp/ffconf.OuPGoDMW.o /tmp/ffconf.fTnjzKqn.c
    
gcc -L/home/ryuk666/ffmpeg_build/lib -Wl,--as-needed -Wl,-z,noexecstack -I/home/ryuk666/ffmpeg_build/include -L/home/ryuk666/ffmpeg_build/lib -o /tmp/ffconf.RVzkkwqb /tmp/ffconf.OuPGoDMW.o -lx265 -lstdc++ -lm -lrt -ldl -lx264 -lpthread -lm -ldl -lvpx -lm -lpthread -lvpx -lm -lpthread -lvpx -lm -lpthread -lvpx -lm -lpthread -lvorbisenc -lvorbis -logg -ltheoraenc -ltheoradec -logg -lopus -lm -lmp3lame -lfreetype -lz -lpng12 -lz -lm -lfdk-aac -lm -lass -lm -lharfbuzz -lfontconfig -lexpat -lfreetype -lexpat -lfribidi -lfreetype -lz -lpng12 -lz -lm -lm -lz -pthread
    
/home/ryuk666/ffmpeg_build/lib/libx265.a(encoder.cpp.o): In function `afterMeanShift(cv::Mat&amp;, int, std::vector >, cv::Size_<int>, std::vector >, cv::Mat, std::vector >)':
    
encoder.cpp:(.text+0x7abe): undefined reference to `cv::Mat::create(int, int const*, int)'
    
encoder.cpp:(.text+0x7ae0): undefined reference to `cv::Mat::zeros(cv::Size_<int>, int)'
    
encoder.cpp:(.text+0x7b17): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7b91): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x7bad): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7c29): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x7c45): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7cbe): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x7d67): undefined reference to `cv::Mat::create(int, int const*, int)'
    
encoder.cpp:(.text+0x7d89): undefined reference to `cv::Mat::zeros(cv::Size_<int>, int)'
    
encoder.cpp:(.text+0x7dc0): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7e39): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x7e55): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7ed1): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x7eed): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x7f66): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x81bc): undefined reference to `cv::Mat::create(int, int const*, int)'
    
encoder.cpp:(.text+0x81de): undefined reference to `cv::Mat::zeros(cv::Size_<int>, int)'
    
encoder.cpp:(.text+0x8215): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x8291): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x82ad): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x8329): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x8345): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x83be): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x84aa): undefined reference to `cv::getStructuringElement(int, cv::Size_<int>, cv::Point_<int>)'
    
encoder.cpp:(.text+0x8598): undefined reference to `cv::morphologyEx(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, int, cv::_InputArray const&amp;, cv::Point_<int>, int, int, cv::Scalar_<double> const&amp;)'
    
encoder.cpp:(.text+0x85e1): undefined reference to `cv::getStructuringElement(int, cv::Size_<int>, cv::Point_<int>)'
    
encoder.cpp:(.text+0x86c9): undefined reference to `cv::morphologyEx(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, int, cv::_InputArray const&amp;, cv::Point_<int>, int, int, cv::Scalar_<double> const&amp;)'
    
encoder.cpp:(.text+0x8786): undefined reference to `cv::Mat::create(int, int const*, int)'
    
encoder.cpp:(.text+0x87a8): undefined reference to `cv::Mat::zeros(cv::Size_<int>, int)'
    
encoder.cpp:(.text+0x87df): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x8859): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x8875): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x88f1): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x890d): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x8986): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x89f1): undefined reference to `cv::threshold(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, double, double, int)'
    
encoder.cpp:(.text+0x8cac): undefined reference to `cv::connectedComponentsWithStats(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::_OutputArray const&amp;, cv::_OutputArray const&amp;, int, int)'
    
encoder.cpp:(.text+0x8e3f): undefined reference to `cv::compare(cv::_InputArray const&amp;, cv::_InputArray const&amp;, cv::_OutputArray const&amp;, int)'
    
encoder.cpp:(.text+0x8e89): undefined reference to `cv::getStructuringElement(int, cv::Size_<int>, cv::Point_<int>)'
    
encoder.cpp:(.text+0x8f67): undefined reference to `cv::dilate(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::_InputArray const&amp;, cv::Point_<int>, int, int, cv::Scalar_<double> const&amp;)'
    
encoder.cpp:(.text+0x9031): undefined reference to `cv::Mat::copyTo(cv::_OutputArray const&amp;) const'
    
encoder.cpp:(.text+0x9067): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x90f2): undefined reference to `cv::Mat::copySize(cv::Mat const&amp;)'
    
encoder.cpp:(.text+0x9138): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x91b6): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x91d5): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9255): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9270): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x92e6): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9305): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9385): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x93a4): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9425): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9444): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x94c5): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x94e0): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9556): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9575): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x95f5): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9614): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9695): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x96b0): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9726): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x9745): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x97c5): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0x97e4): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0x9865): undefined reference to `cv::fastFree(void*)'
    
/home/ryuk666/ffmpeg_build/lib/libx265.a(encoder.cpp.o): In function `meanShift2(cv::Mat, cv::Mat&amp;, cv::Size_<int>, std::vector >&amp;, std::vector >&amp;, std::vector >)':
    
encoder.cpp:(.text+0x9a69): undefined reference to `cv::resize(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::Size_<int>, double, double, int)'
    
encoder.cpp:(.text+0x9b2b): undefined reference to `cv::Mat::copyTo(cv::_OutputArray const&amp;) const'
    
encoder.cpp:(.text+0xa11c): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xa191): undefined reference to `cv::Mat::deallocate()'
    
/home/ryuk666/ffmpeg_build/lib/libx265.a(encoder.cpp.o): In function `x265::Encoder::encode(x265_picture const*, x265_picture*)':
    
encoder.cpp:(.text+0xa2c3): undefined reference to `cvCreateImage'
    
encoder.cpp:(.text+0xa450): undefined reference to `cvSet2D'
    
encoder.cpp:(.text+0xa4cd): undefined reference to `cv::cvarrToMat(void const*, bool, bool, int, cv::AutoBuffer*)'
    
encoder.cpp:(.text+0xa5e9): undefined reference to `cv::Mat::copyTo(cv::_OutputArray const&amp;) const'
    
encoder.cpp:(.text+0xa794): undefined reference to `cv::resize(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::Size_<int>, double, double, int)'
    
encoder.cpp:(.text+0xa86e): undefined reference to `cv::Mat::copyTo(cv::_OutputArray const&amp;) const'
    
encoder.cpp:(.text+0xb1ec): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xb262): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xb300): undefined reference to `cv::resize(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::Size_<int>, double, double, int)'
    
encoder.cpp:(.text+0xb45e): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xb4d4): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xb565): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xb5e0): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xb5ff): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xb67e): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xb810): undefined reference to `cv::Mat::copyTo(cv::_OutputArray const&amp;) const'
    
encoder.cpp:(.text+0xbad4): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xbb3a): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xbcd2): undefined reference to `cv::resize(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::Size_<int>, double, double, int)'
    
encoder.cpp:(.text+0xc01e): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xc083): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xc11b): undefined reference to `cv::resize(cv::_InputArray const&amp;, cv::_OutputArray const&amp;, cv::Size_<int>, double, double, int)'
    
encoder.cpp:(.text+0xc1ea): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xc260): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xc27b): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xc2f1): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xc310): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xc38d): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xc3ac): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xc429): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xc4dd): undefined reference to `cv::fastFree(void*)'
    
encoder.cpp:(.text+0xd5a0): undefined reference to `cv::Mat::deallocate()'
    
encoder.cpp:(.text+0xd6bc): undefined reference to `cv::Mat::copySize(cv::Mat const&amp;)'
    
encoder.cpp:(.text+0xd7a6): undefined reference to `cv::Mat::copySize(cv::Mat const&amp;)'
    
encoder.cpp:(.text+0xda4f): undefined reference to `cv::Mat::copySize(cv::Mat const&amp;)'
    
collect2: error: ld returned 1 exit status
    
ERROR: x265 not found using pkg-config
    
</int></int></int></int></int></int></double></int></int></int></int></double></int></int></int></double></int></int></int></int></int></int></int>

  • FFMPEG how to synchronize 2 video streams before comparison

    7 mai 2017, par Yang Zhang

    I am trying to write a ffmpeg filter to do some comparison between two video streams, the video stream is come from capture card, but when I try to compare the frames one by one, I found the frames is slightly not synchronize.

    for example :

    This is the first input stream frames order :

    a, b, c, d, e, f, g....

    And This is second :

    c, d, e, f, g....

    when I comparing the frames in the filter, I found that it becomes ’a’ vs ’c’, ’b’ vs ’d’..., it’s not synchronize.

    Does there exists any way to synchronize 2 video streams ?

    thanks in advance !

  • is Cloud API's needed for Video Conversion to save huge time ?

    4 mai 2017, par user2224250

    I have seen a couple of ffmpeg software’s which converts a video x format (1.8 GB) to y format (1.8 GB) in less than 90 seconds

    For example IDealshare VideoGo

    When I work with ffmpeg in the terminal, these sort of conversions takes atleast one hour. Moreover, when I compare to the above software, am facing a very very big number interms of time.

    May be, do you think for these fast conversions, we must take help from third party cloud API’s (software’s) such as amazon elastic transcoder etc etc.

    Any pointers would be really appreciable !!

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