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• Compile OpenCV3 with Cuda7.5 ffmpeg (latest) issue OpenSUSE 13.2

  23 janvier 2016, par Ingeborg

  I am using an OpenSUSE 13.2-X86-64 and a Geforce 940M GPU. I want to work with it on the Qt5 IDE.
  For this purpose, i have installed my GPU Driver with the Cuda7.5 toolkit rpm from the cudazone. Everything is nearly fine.
  It detects everything I have made and executed a couple of the cuda samples.

  As next step, i have installed the current FFmpeg version with nvenc and other libraries like Xvid and many of
  the other usefull stuff which would be to much to list it here. After that i have downloaded the current
  OpenCV-3.0.0 source code and ran cmake-gui where i have added cuda, ffmpeg, Qt5 etc and maked it.

  On different points of the make session (make -j4) i get this kind of mistake from my console (The list of the Multiple definition
  error is much longer). This is the first one.

  .
  
  .
  
  .
  
  .
  
  .
  
  .
  
  nvlink error   : Multiple definition of '_ZN2cv5cudev16color_cvt_detail15c_HlsSectorDataE' in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_arithm_func.cu.o', first defined in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_lut.cu.o'
  
  nvlink error   : Multiple definition of '_ZN2cv5cudev16color_cvt_detail16c_sRGBGammaTab_bE' in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_arithm_func.cu.o', first defined in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_lut.cu.o'
  
  nvlink error   : Multiple definition of '_ZN2cv5cudev16color_cvt_detail14c_sRGBGammaTabE' in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_arithm_func.cu.o', first defined in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_lut.cu.o'
  
  nvlink error   : Multiple definition of '_ZN2cv5cudev16color_cvt_detail17c_sRGBInvGammaTabE' in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_arithm_func.cu.o', first defined in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_lut.cu.o'
  
  nvlink error   : Multiple definition of '_ZN2cv5cudev16color_cvt_detail12c_LabCbrtTabE' in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_arithm_func.cu.o', first defined in '/home/peter/Programme/opencv/build/modules/cudev/test/CMakeFiles/opencv_test_cudev.dir//./opencv_test_cudev_generated_test_lut.cu.o'
  
  modules/cudev/test/CMakeFiles/opencv_test_cudev.dir/build.make:5302: recipe for target 'modules/cudev/test/CMakeFiles/opencv_test_cudev.dir/./opencv_test_cudev_intermediate_link.o' failed
  
  make[2]: *** [modules/cudev/test/CMakeFiles/opencv_test_cudev.dir/./opencv_test_cudev_intermediate_link.o] Error 255
  
  CMakeFiles/Makefile2:1182: recipe for target 'modules/cudev/test/CMakeFiles/opencv_test_cudev.dir/all' failed
  
  make[1]: *** [modules/cudev/test/CMakeFiles/opencv_test_cudev.dir/all] Error 2
  
  Makefile:137: recipe for target 'all' failed
  
  make: *** [all] Error 2

  And I have no idea how to fix that.

  Thx !

  Edit : added cmake configuration

  ~/Programme/opencv/build> cmake /home/peter/Programme/opencv-3.0.0
  
  CMake Error: The source "/home/peter/Programme/opencv-3.0.0/CMakeLists.txt" does not match the source "/home/peter/Programme/opencv/CMakeLists.txt" used to generate cache.  Re-run cmake with a different source directory.
  
  peter@linux-3mgc:~/Programme/opencv/build> cmake /home/peter/Programme/opencv
  
  -- Detected version of GNU GCC: 48 (408)
  
  -- Found ZLIB: /usr/lib64/libz.so (found suitable version "1.2.8", minimum required is "1.2.3") 
  
  -- Found ZLIB: /usr/lib64/libz.so (found version "1.2.8") 
  
  -- 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 - not 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 - found
  
  -- Looking for ffmpeg/avformat.h
  
  -- Looking for ffmpeg/avformat.h - not found
  
  -- found IPP (ICV version): 8.2.1 [8.2.1]
  
  -- at: /home/peter/Programme/opencv/3rdparty/ippicv/unpack/ippicv_lnx
  
  -- CUDA detected: 7.5
  
  -- CUDA NVCC target flags: -gencode;arch=compute_50,code=sm_50
  
  -- 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 "2.7.8", minimum required is "2.7") 
  
  -- Found PythonLibs: /usr/lib64/libpython2.7.so (found suitable exact version "2.7.8") 
  
  -- Found PythonInterp: /usr/bin/python3.4 (found suitable version "3.4.1", minimum required is "3.4") 
  
  -- Found PythonLibs: /usr/lib64/libpython3.4m.so (found suitable exact version "3.4.1") 
  
  Traceback (most recent call last):
  
  File "<string>", line 1, in <module>
  
  ImportError: No module named 'numpy'
  
  -- Found apache ant 1.8.0: /usr/bin/ant
  
  -- Could NOT find JNI (missing:  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) 
  
  -- VTK support is disabled. Incompatible combination: OpenCV + Qt5 and VTK ver.6.1.0 + Qt4
  
  -- 
  
  -- General configuration for OpenCV 3.0.0-dev =====================================
  
  --   Version control:               3.0.0-528-g3a3f403-dirty
  
  -- 
  
  --   Platform:
  
  --     Host:                        Linux 3.16.7-24-desktop x86_64
  
  --     CMake:                       3.0.2
  
  --     CMake generator:             Unix Makefiles
  
  --     CMake build tool:            /usr/bin/gmake
  
  --     Configuration:               Release
  
  -- 
  
  --   C/C++:
  
  --     Built as dynamic libs?:      YES
  
  --     C++ Compiler:                /usr/bin/c++  (ver 4.8.3)
  
  --     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 -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -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 -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -g  -O0 -DDEBUG -D_DEBUG
  
  --     C Compiler:                  /usr/bin/cc
  
  --     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 -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -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 -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -g  -O0 -DDEBUG -D_DEBUG
  
  --     Linker flags (Release):      
  
  --     Linker flags (Debug):        
  
  --     Precompiled headers:         YES
  
  --     Extra dependencies:          /usr/lib64/libcuda.so /usr/lib64/libnvcuvid.so Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent Qt5::OpenGL /usr/lib64/libwebp.so /usr/lib64/libpng.so /usr/lib64/libz.so /usr/lib64/libtiff.so /usr/lib64/libjasper.so /usr/lib64/libjpeg.so gstbase-0.10 gstreamer-0.10 gobject-2.0 gmodule-2.0 gthread-2.0 xml2 ucil glib-2.0 unicap dc1394 xine v4l1 v4l2 avcodec avformat avutil swscale gphoto2 gphoto2_port exif /usr/lib64/libbz2.so dl m pthread rt /usr/lib64/libGLU.so /usr/lib64/libGL.so /usr/lib64/libSM.so /usr/lib64/libICE.so /usr/lib64/libX11.so /usr/lib64/libXext.so cudart nppc nppi npps cublas cufft
  
  --     3rdparty dependencies:       IlmImf ippicv
  
  -- 
  
  --   OpenCV modules:
  
  --     To be built:                 cudev hal core cudaarithm flann imgproc ml video cudabgsegm cudafilters cudaimgproc cudawarping imgcodecs photo shape videoio cudacodec highgui objdetect ts features2d calib3d cudafeatures2d cudalegacy cudaobjdetect cudaoptflow cudastereo stitching superres videostab python2
  
  --     Disabled:                    world
  
  --     Disabled by dependency:      -
  
  --     Unavailable:                 java python3 viz
  
  -- 
  
  --   GUI: 
  
  --     QT 5.x:                      YES (ver 5.4.2)
  
  --     QT OpenGL support:           YES (Qt5::OpenGL 5.4.2)
  
  --     OpenGL support:              YES (/usr/lib64/libGLU.so /usr/lib64/libGL.so /usr/lib64/libSM.so /usr/lib64/libICE.so /usr/lib64/libX11.so /usr/lib64/libXext.so)
  
  --     VTK support:                 NO
  
  -- 
  
  --   Media I/O: 
  
  --     ZLib:                        /usr/lib64/libz.so (ver 1.2.8)
  
  --     JPEG:                        /usr/lib64/libjpeg.so (ver )
  
  --     WEBP:                        /usr/lib64/libwebp.so (ver encoder: 0x0202)
  
  --     PNG:                         /usr/lib64/libpng.so (ver 1.2.51)
  
  --     TIFF:                        /usr/lib64/libtiff.so (ver 42 - 4.0.4)
  
  --     JPEG 2000:                   /usr/lib64/libjasper.so (ver 1.900.1)
  
  --     OpenEXR:                     build (ver 1.7.1)
  
  --     GDAL:                        NO
  
  -- 
  
  --   Video I/O:
  
  --     DC1394 1.x:                  NO
  
  --     DC1394 2.x:                  YES (ver 2.2.2)
  
  --     FFMPEG:                      YES
  
  --       codec:                     YES (ver 57.3.100)
  
  --       format:                    YES (ver 57.2.100)
  
  --       util:                      YES (ver 55.2.100)
  
  --       swscale:                   YES (ver 4.0.100)
  
  --       resample:                  NO
  
  --       gentoo-style:              YES
  
  --     GStreamer:                   NO
  
  --     OpenNI:                      NO
  
  --     OpenNI PrimeSensor Modules:  NO
  
  --     OpenNI2:                     NO
  
  --     PvAPI:                       NO
  
  --     GigEVisionSDK:               NO
  
  --     UniCap:                      YES (ver 0.9.12)
  
  --     UniCap ucil:                 YES (ver 0.9.10)
  
  --     V4L/V4L2:                    Using libv4l1 (ver 1.2.1) / libv4l2 (ver 1.2.1)
  
  --     XIMEA:                       NO
  
  --     Xine:                        YES (ver 1.2.6)
  
  --     gPhoto2:                     YES
  
  -- 
  
  --   Parallel framework:            OpenMP
  
  -- 
  
  --   Other third-party libraries:
  
  --     Use IPP:                     8.2.1 [8.2.1]
  
  --          at:                     /home/peter/Programme/opencv/3rdparty/ippicv/unpack/ippicv_lnx
  
  --     Use IPP Async:               NO
  
  --     Use VA:                      NO
  
  --     Use Intel VA-API/OpenCL:     NO
  
  --     Use Eigen:                   YES (ver 3.2.2)
  
  --     Use Cuda:                    YES (ver 7.5)
  
  --     Use OpenCL:                  YES
  
  -- 
  
  --   NVIDIA CUDA
  
  --     Use CUFFT:                   YES
  
  --     Use CUBLAS:                  YES
  
  --     USE NVCUVID:                 YES
  
  --     NVIDIA GPU arch:             50
  
  --     NVIDIA PTX archs:
  
  --     Use fast math:               YES
  
  -- 
  
  --   OpenCL:
  
  --     Version:                     dynamic
  
  --     Include path:                /home/peter/Programme/opencv/3rdparty/include/opencl/1.2
  
  --     Use AMDFFT:                  NO
  
  --     Use AMDBLAS:                 NO
  
  -- 
  
  --   Python 2:
  
  --     Interpreter:                 /usr/bin/python2.7 (ver 2.7.8)
  
  --     Libraries:                   /usr/lib64/libpython2.7.so (ver 2.7.8)
  
  --     numpy:                       /usr/lib64/python2.7/site-packages/numpy/core/include (ver 1.9.0)
  
  --     packages path:               lib/python2.7/site-packages
  
  -- 
  
  --   Python 3:
  
  --     Interpreter:                 /usr/bin/python3.4 (ver 3.4.1)
  
  -- 
  
  --   Python (for build):            /usr/bin/python2.7
  
  -- 
  
  --   Java:
  
  --     ant:                         /usr/bin/ant (ver 1.8.0)
  
  --     JNI:                         NO
  
  --     Java wrappers:               NO
  
  --     Java tests:                  NO
  
  -- 
  
  --   Matlab:
  
  --     mex:                         NO
  
  -- 
  
  --   Documentation:
  
  --     Doxygen:                     /usr/bin/doxygen (ver 1.8.8)
  
  --     PlantUML:                    NO
  
  -- 
  
  --   Tests and samples:
  
  --     Tests:                       YES
  
  --     Performance tests:           YES
  
  --     C/C++ Examples:              NO
  
  -- 
  
  --   Install path:                  /usr/local
  
  -- 
  
  --   cvconfig.h is in:              /home/peter/Programme/opencv/build
  
  --        
  
  -----------------------------------------------------------------
  
  -- 
  
  -- Configuring done
  
  -- Generating done
  
  -- Build files have been written to: /home/peter/Programme/opencv/build
  
  </module></string></filepath>

• Unable to play mp4 file with JavaFX MediaPlayer

  20 juillet 2016, par Lennart

  I want to capture the computers screen and play resulting video with the MediaPlayer of JavaFX (jdk1.8.0_91).

  I found the supported encoding and container types and I think that mp4 with H.264/AVC and AAC is the best choice.

  I’m using FFmpeg with the DirectShow device Screen Capture Recorder to capture the screen and save the resulting video as mp4 file. I used the following command :

  ffmpeg -rtbufsize 1500M -framerate 25 -f dshow -i video="screen-capture-recorder":audio="virtual-audio-capturer" -r 25 -c:v libx264 -pix_fmt yuv420p output.mp4

  But the MediaPlayer isn’t able to play the video and throws a MediaException instead :

  MediaException: UNKNOWN : [com.sun.media.jfxmediaimpl.platform.gstreamer.GSTMediaPlayer@133b675a] ERROR_MEDIA_INVALID: ERROR_MEDIA_INVALID
  
      at javafx.scene.media.MediaException.getMediaException(MediaException.java:160)
  
      at javafx.scene.media.MediaPlayer$_MediaErrorListener.onError(MediaPlayer.java:2615)
  
      at com.sun.media.jfxmediaimpl.NativeMediaPlayer$EventQueueThread.HandleErrorEvents(NativeMediaPlayer.java:691)
  
      at com.sun.media.jfxmediaimpl.NativeMediaPlayer$EventQueueThread.run(NativeMediaPlayer.java:425)

  I previously used a video from Youtube (downloaded with some random Youtube downloader) for testing and it worked. I displayed the video codecs with the VLC player and it shows the same data (except for the frame rate and resolution) :

  
  Left is the Youtube video and right the FFmpeg output.

  Solution :
  The problem was the resolution of the video. I found an open jdk bug that says that the maximum resolution is 1920x1088 due to limitations of the used decoder. The video played fine after I scaled it.

• FFmpeg segmentation and transcoding missing frames

  15 décembre 2022, par Davidec0018

  I code videos for hobbies and have a decent understanding of ffmpeg and mkvmerge. I prefer to encode video when my computer is on for other things as well, so I recently looked for a way that I could resume encoding after the computer was turned off.

  


  I tried a virtual machine, saving the whole state and it seems to work very well, but the performance is very slow and with the same settings the encoding time is much longer than normal.

  


  I then tried to divide the starting video into several segments, so as to resume from the appropriate segment after restarting the computer.

  


  I tried to do this with ffmpeg :

  


  ffmpeg -i input -map 0:v:0 -c copy -f segment -segment_time 300 -reset_timestamps 1 segment%03d.mkv


  


  But also with the mkvtoolnix gui.

  


  Both operations provide an excellent result.Trying to merge the segments into one video, with ffconcat or mkvtoolnix the result is perfect.

  


  The problem arises when segments are encoded. I use a simple script based on slow preset for every segment in loop (I use both windows and linux) :

  


  ffmpeg -i input.mkv -threads 0 -map 0 -c:a copy -c:s copy -preset slow -pix_fmt yuv420p10le -c:v libx265 -x265-params crf=18:bframes=8:aq-mode=2:aq-strength=1.0 output.mkv


  


  Putting them together in the same way, the video also looks quite good, and with the naked eye you don't notice the passage of the various segments, but analyzing them with ffmpeg I notice that the individual segments have slightly shorter durations and a different number of frames, even 2 or 3 less. When putting together very long videos, you notice even 2 seconds of difference with the original, which also causes the audio and subtitles to go into desynch.

  


  I know the problem has to do with keyframes, timestamps and stuff like that. But I don't understand why. FFmpeg, as well as mkvmerge should split the video exactly where the keyframes are, about 300 seconds apart, so as not to mess up the video structure and allow for good encoding and reassembling.

  


  The problem is just encoding with ffmpeg that removes some frames from the original segments. Sometimes I noticed during the encoding of some segments the following error code, or maybe warning, because the encoding worked anyway :

  


  [hevc @ 0x55758bf92dc0] First slice in a frame missing.
    Last message repeated 6 times
[hevc @ 0x55758c2000c0] First slice in a frame missing.


  


  I've read every discussion about it on the net, I've tried to segment both with mp4 and mkv format, with and without audio, but the problem remains. Where am I doing wrong ?