OpenCV
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OpenCV is a computer vision library written in C++. Binding for Java, Python and other environments are available.
Links
Issues
OpenCV VideoWriter
OpenCV: FFMPEG: tag 0x67706a6d/'mjpg' is not supported with codec id 7 and format 'mpeg / MPEG-1 Systems / MPEG program stream'
- https://stackoverflow.com/questions/34024041/writing-x264-from-opencv-3-with-ffmpeg-on-linux
- https://answers.opencv.org/question/120081/videowriter-recording-mp4-x264-opencv-31/
- https://stackoverflow.com/questions/10605163/opencv-videowriter-under-osx-producing-no-output
- http://www.fourcc.org/codecs.php
- https://stackoverflow.com/questions/24195926/opencv-write-webcam-output-to-avi-file
SIGILL on MacOS 10.13.6 with macports opencv
reading: ./target/test-classes/cameramatrix/GOPR0032.jpg # # A fatal error has been detected by the Java Runtime Environment: # # SIGILL (0x4) at pc=0x0000000141f4e8c6, pid=35515, tid=0x0000000000002503 # # JRE version: Java(TM) SE Runtime Environment (8.0_191-b12) (build 1.8.0_191-b12) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.191-b12 mixed mode bsd-amd64 compressed oops) # Problematic frame: # C [libopencv_imgproc.3.4.dylib+0x2088c6] cv::Ptr<cv::FilterEngine> cv::makePtr<cv::FilterEngine, cv::Ptr<cv::BaseFilter>, cv::Ptr<cv::BaseRowFilter>, cv::Ptr<cv::BaseColumnFilter>, int, int, int, int>(cv::Ptr<cv::BaseFilter> const&, cv::Ptr<cv::BaseRowFilter> const&, cv::Ptr<cv::BaseColumnFilter> const&, int const&, int const&, int const&, int const&)+0x4e # # Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again # # An error report file with more information is saved as: # /Users/wf/Documents/workspace/dukes/rc-camera-matrix/hs_err_pid35515.log # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. #