Question

我正在尝试访问通过 USB 连接的 4 个网络摄像头。问题是当我直接连接网络摄像头时它工作得很好，但是当我使用 HUB 3.0 来连接我的网络摄像头然后尝试访问网络摄像头时，它给了我一些错误。

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" com.github.sarxos.webcam.WebcamException: Cannot execute task
    at com.github.sarxos.webcam.WebcamProcessor$AtomicProcessor.process(WebcamProcessor.java:72)
    at com.github.sarxos.webcam.WebcamProcessor.process(WebcamProcessor.java:140)
    at com.github.sarxos.webcam.WebcamTask.process(WebcamTask.java:46)
    at com.github.sarxos.webcam.ds.cgt.WebcamOpenTask.open(WebcamOpenTask.java:20)
    at com.github.sarxos.webcam.Webcam.open(Webcam.java:295)
    at com.github.sarxos.webcam.Webcam.open(Webcam.java:250)
    at com.github.sarxos.webcam.Webcam.open(Webcam.java:236)
    at RunningWebcams.main(RunningWebcams.java:83)
Caused by: com.github.sarxos.webcam.WebcamException: Cannot start native grabber!
    at com.github.sarxos.webcam.ds.buildin.WebcamDefaultDevice.open(WebcamDefaultDevice.java:334)
    at com.github.sarxos.webcam.ds.cgt.WebcamOpenTask.handle(WebcamOpenTask.java:38)
    at com.github.sarxos.webcam.WebcamProcessor$AtomicProcessor.run(WebcamProcessor.java:81)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
    at java.base/java.lang.Thread.run(Thread.java:832)

我使用的代码是：

Webcam webcam1;
Webcam webcam2;
Webcam webcam3;
Webcam webcam4;

webcam1 = Webcam.getWebcams().get(0); // Camera 1
webcam2 = Webcam.getWebcams().get(1); // Camera 2
webcam3 = Webcam.getWebcams().get(2); // Camera 3
webcam4 = Webcam.getWebcams().get(3); // Camera 4

webcam1.setViewSize(WebcamResolution.VGA.getSize()); // set size
webcam2.setViewSize(WebcamResolution.VGA.getSize()); // set size
webcam3.setViewSize(WebcamResolution.VGA.getSize()); // set size
webcam4.setViewSize(WebcamResolution.VGA.getSize()); // set size

webcam1.open();
webcam2.open();
webcam3.open();
webcam4.open();

有没有办法在不降低分辨率和使用 HUB 的情况下解决这些错误？

Sarxos 网络摄像头库

0 个答案: