MacOS - Webcam Open Problem

[cengizerdoganrk]

Hi @sarxos; On MacOS, we are facing the following exception quite frequently. Any idea how to resolve this? Thanks.

2019-12-03 10:16:26,993 pool-14-thread-2 ERROR WebcamCaptureTask Cannot capture image com.github.sarxos.webcam.WebcamException: Cannot execute task at com.github.sarxos.webcam.WebcamProcessor$AtomicProcessor.process(WebcamProcessor.java:72) at com.github.sarxos.webcam.WebcamProcessor.process(WebcamProcessor.java:140) at com.github.sarxos.webcam.WebcamTask.process(WebcamTask.java:46) at com.github.sarxos.webcam.ds.cgt.WebcamOpenTask.open(WebcamOpenTask.java:20) at com.github.sarxos.webcam.Webcam.open(Webcam.java:295) at com.github.sarxos.webcam.Webcam.open(Webcam.java:250) at com.github.sarxos.webcam.Webcam.open(Webcam.java:236) at com.virtualoffice.client.capture.webcam.WebcamCaptureTask.openWebcam(WebcamCaptureTask.java:139) at com.virtualoffice.client.capture.webcam.WebcamCaptureTask.captureImage(WebcamCaptureTask.java:118) at com.virtualoffice.client.capture.webcam.WebcamCaptureTask.capture(WebcamCaptureTask.java:48) at com.virtualoffice.client.capture.webcam.WebcamCaptureTask.execute(WebcamCaptureTask.java:38) at com.virtualoffice.client.capture.webcam.WebcamCapture.capture(WebcamCapture.java:60) at com.virtualoffice.client.capture.webcam.WebcamCapture.capture(WebcamCapture.java:56) at com.virtualoffice.client.datacapture.jobs.WebcamshotJob.saveEvent(WebcamshotJob.java:64) at com.virtualoffice.client.datacapture.jobs.AbstractImageCaptureJob.run(AbstractImageCaptureJob.java:56) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: com.github.sarxos.webcam.WebcamException: org.bytedeco.javacv.FrameGrabber$Exception: read() Error: Could not read frame in start(). at com.github.sarxos.webcam.ds.javacv.JavaCvDevice.open(JavaCvDevice.java:200) at com.github.sarxos.webcam.ds.cgt.WebcamOpenTask.handle(WebcamOpenTask.java:38) at com.github.sarxos.webcam.WebcamProcessor$AtomicProcessor.run(WebcamProcessor.java:81) ... 3 more Caused by: org.bytedeco.javacv.FrameGrabber$Exception: read() Error: Could not read frame in start(). at org.bytedeco.javacv.OpenCVFrameGrabber.start(OpenCVFrameGrabber.java:240) at com.github.sarxos.webcam.ds.javacv.JavaCvDevice.open(JavaCvDevice.java:194) ... 5 more

[kkieffer]

Duplicate of #645 I think.