Thank you for taking your time and replying me. :)
The error log shows the same thing, that it has errror when initializing the frame grabber.
Also, about configuring FFmpegFrameGrabber in windows — how would JavaCVExample.java look like when it’s modified for windows? Not that I want you to do that job for me, but I don’t quite understand which parts from your provided snippet need to be added to existing code of JavaCVExample.java and which parts of this code should be taken out, to be honest.