Question

在CentOS中，使用javacpp调用FFmpeg进行视频裁剪一帧，在我自己的开发机器上使用这段代码没问题，但是在centos6中报了NoClassDefFound：无法初始化类org.bytedeco.javacpp.avutil

Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avformat$AVFormatContext
    at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:383) ~[javacv-1.0.jar:1.0]
    at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:377) ~[javacv-1.0.jar:1.0]
    at cn.xxtui.support.upload.BasicUpload.convertImage(BasicUpload.java:211) ~[classes/:?]
    at cn.xxtui.support.upload.BasicUpload.upload(BasicUpload.java:197) ~[classes/:?]
    at cn.com.ql.wiseBeijing.upload.UploadImage.upload(UploadImage.java:144) ~[classes/:?]
    at cn.com.ql.wiseBeijing.upload.UploadImage.imageCategory(UploadImage.java:51) ~[classes/:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_25]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_25]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_25]
    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_25]
    at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) ~[cxf-core-3.1.12.jar:3.1.12]
    at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) ~[cxf-core-3.1.12.jar:3.1.12]
    ... 37 more

这是我的pom配置：

<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacv</artifactId>
    <version>1.0</version>
</dependency>
<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacpp</artifactId>
    <version>1.0</version>
</dependency>
<dependency>
    <groupId>com.github.hoary.ffmpeg</groupId>
    <artifactId>FFmpeg-linux-x86_64</artifactId>
    <version>2.0.1.1
    </version>
</dependency>
<dependency>
    <groupId>org.bytedeco.javacpp-presets</groupId>
    <artifactId>ffmpeg</artifactId>
    <version>2.7.1-1.0</version>
</dependency>

这是我的代码：

public String convertImage(String filePath, String imagePath) throws IOException, FrameGrabber.Exception {
    FFmpegFrameGrabber g = new FFmpegFrameGrabber(filePath);
    g.start();
    Java2DFrameConverter java2DFrameConverter = new Java2DFrameConverter();
    BufferedImage bufferedImage = java2DFrameConverter.convert(g.grabImage());
    String path = imagePath + System.currentTimeMillis() + ".png";
    ImageIO.write(bufferedImage, "png", new File(path));
    g.stop();
    return path;
}

Answer 1

确保您的计算机上安装了所有需要的库。在这种情况下，“javacv-platform”。

这就是提示在这个方向上思考的原因：

java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avformat$AVFormatContext

“NoClassDefFound”几乎总是意味着缺少必要的东西。

通过JavaCPP调用FFmpeg：引起：java.lang.NoClassDefFoundError：无法初始化类org.bytedeco.javacpp.avformat $ AVFormatContext

1 个答案: