Error in Java: can't find starting number (in the name of file)

Android/Java
2
  • make sure opencv_videoio_ffmpeg452_64.dll can be found at runtime
    (folder w opencv dlls should be on the PATH)
  • set an env var: set OPENCV_VIDEOIO_DEBUG=1
    to see which video backends are available / tried
    rerun code, and report back, please
  • System.out.println(Core.getBuildInformation());
    (there’s a “Video IO” section)