Cannot open local webcam on NetBeans JavaFX 8 Project

[Adi-18]

I use new version 1.5.5 with example code JavaFxPlayVideo.java on JavaFX 8

For grabbing local webcam I use FrameGrabber grabber = new OpenCVFrameGrabber(1); because FFmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(1); is no more possible (yes 1 is correct).

In normal Java-Project I can run this example, but when I create it with NetBeans as a JavaFX project, I get an exception:

Exception in thread "Thread-5" java.lang.ExceptionInInitializerError at org.bytedeco.javacv.OpenCVFrameGrabber.(OpenCVFrameGrabber.java:95) at camtest.JavaFxPlayVideo.lambda$start$1(JavaFxPlayVideo.java:55) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy at sun.reflect.annotation.AnnotationParser.parseClassArray(AnnotationParser.java:724) at sun.reflect.annotation.AnnotationParser.parseArray(AnnotationParser.java:531) at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:355) at sun.reflect.annotation.AnnotationParser.parseAnnotation2(AnnotationParser.java:286) at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:120) at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:72) at java.lang.Class.createAnnotationData(Class.java:3521) at java.lang.Class.annotationData(Class.java:3510) at java.lang.Class.createAnnotationData(Class.java:3526) at java.lang.Class.annotationData(Class.java:3510) at java.lang.Class.createAnnotationData(Class.java:3526) at java.lang.Class.annotationData(Class.java:3510) at java.lang.Class.getAnnotation(Class.java:3415) at java.lang.reflect.AnnotatedElement.isAnnotationPresent(AnnotatedElement.java:258) at java.lang.Class.isAnnotationPresent(Class.java:3425) at org.bytedeco.javacpp.Loader.checkPlatform(Loader.java:994) at org.bytedeco.javacpp.Loader.load(Loader.java:1171) at org.bytedeco.javacpp.Loader.load(Loader.java:1148) at org.bytedeco.javacv.OpenCVFrameConverter.(OpenCVFrameConverter.java:43) ... 3 more

[saudet]

It looks like the main JAR file for JavaCPP is missing from the class path. Make sure all JAR files are in the class path.

[Adi-18]

Thank you for the replay. I have already included JavaCPP. The problem is only, if I start demo as JavaFX-Project in my NetBeans 8.2. As "normal" project it works (also when I start code by context menu -> run file on that file).

[saudet]

If you're trying to use the javafx-maven-plugin, be aware that it's still not fully functional, see issue #1435. If you need to use that plugin, make sure it's set to use the class path, and not the module path.

/cc @johanvos

[Adi-18]

I don't use javafx-maven-plugin. Its on Java 8 in Netbeans 8.2.

[saudet]

Sounds like a bug in JavaFX 8... Time to upgrade maybe? It's a 6-year-old release that is no longer supported.

[Adi-18]

Since JavaFX is out of jdk and not easy to porting my project with many of unknowns, this is not an option at the moment

Same Problem while calling this: private static OpenCVFrameConverter.ToIplImage iplConv = new OpenCVFrameConverter.ToIplImage(); for converting to ImageView.

BTW: bevore I used FmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(1); and this worked perfectly for WebCam. Why this is no more possible?

[saudet]

BTW: bevore I used FmpegFrameGrabber grabber = FFmpegFrameGrabber.createDefault(1); and this worked perfectly for WebCam. Why this is no more possible?

That never worked. FFmpeg needs a String, not an int.

[Adi-18]

Yes, I know, that's why I have had to use the factory method FFmpegFrameGrabber.createDefault(int deviceNumber) -> http://bytedeco.org/javacv/apidocs/org/bytedeco/javacv/OpenCVFrameGrabber.html

[saudet]

What you're probably talking about is FrameGrabber.createDefault(1) and that probably returns you an OpenCVFrameGrabber, yes.