问题
I make a video recorder android app with javacv. But, when i run this app this error occurs "java.lang.NoClassDefFoundError: org.bytedeco.javacpp.avutil".
How can I solve this error?
gradle.build file
android {
..............
packagingOptions {
exclude 'META-INF/services/javax.annotation.processing.Processor'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
}
}
dependencies {
implementation group: 'org.bytedeco', name: 'javacv', version: '1.1'
implementation group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.0.0-1.1', classifier: 'android-arm'
implementation group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.8.1-1.1', classifier: 'android-arm'
implementation group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.0.0-1.1', classifier: 'android-x86'
implementation group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.8.1-1.1', classifier: 'android-x86'
}
My demo code VideoService which will invoke in MainActivity
package com.fs.fs.api;
import com.fs.fs.App;
import com.fs.fs.utils.DateUtils;
import com.fs.fs.utils.FileUtils;
import org.bytedeco.javacpp.avcodec;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.FrameRecorder;
import java.util.Date;
/**
* Created by wyx on 2017/1/11.
*/
public class VideoService {
private FFmpegFrameRecorder mFrameRecorder;
private String path;
private VideoService() {
}
private static class SingletonHolder {
private static final VideoService INSTANCE = new VideoService();
}
public static VideoService getInstance() {
return SingletonHolder.INSTANCE;
}
public void startRecordVideo() {
String fileName = String.format("%s.%s", DateUtils.date2String(new Date(), "yyyyMMdd_HHmmss"), "mp4");
path = FileUtils.getExternalFullPath(App.getInstance(), fileName);
mFrameRecorder = new FFmpegFrameRecorder(path, 640, 480, 1);
mFrameRecorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
mFrameRecorder.setVideoOption("tune", "zerolatency");
mFrameRecorder.setVideoOption("preset", "ultrafast");
mFrameRecorder.setVideoOption("crf", "28");
mFrameRecorder.setVideoBitrate(300 * 1000);
mFrameRecorder.setFormat("mp4");
mFrameRecorder.setFrameRate(30);
mFrameRecorder.setAudioOption("crf", "0");
mFrameRecorder.setSampleRate(48 * 1000);
mFrameRecorder.setAudioBitrate(960 * 1000);
mFrameRecorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
try {
mFrameRecorder.start();
} catch (FrameRecorder.Exception e) {
e.printStackTrace();
}
}
public void stop() {
if (mFrameRecorder != null) {
try {
mFrameRecorder.stop();
mFrameRecorder.release();
} catch (FrameRecorder.Exception e) {
e.printStackTrace();
}
mFrameRecorder = null;
}
}
}
MainActivity
package com.fs.fs.activity;
import android.app.Activity;
import android.os.Bundle;
import com.fs.fs.R;
import com.fs.fs.api.VideoService;
import static java.lang.Thread.sleep;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
VideoService.getInstance().startRecordVideo();
try {
sleep(10 * 1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
VideoService.getInstance().stop();
}
}
Error
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.usb, PID: 660
java.lang.NoClassDefFoundError: org.bytedeco.javacpp.avutil
at org.bytedeco.javacpp.Loader.load(Loader.java:590)
at org.bytedeco.javacpp.Loader.load(Loader.java:530)
at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
at android.app.Activity.performCreate(Activity.java:5304)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
at android.app.ActivityThread.access$1000(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5291)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:251)
at org.bytedeco.javacpp.Loader.load(Loader.java:585)
at org.bytedeco.javacpp.Loader.load(Loader.java:530)
at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
at android.app.Activity.performCreate(Activity.java:5304)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
at android.app.ActivityThread.access$1000(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5291)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NoClassDefFoundError: org/bytedeco/javacpp/avutil
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:251)
at org.bytedeco.javacpp.Loader.load(Loader.java:585)
at org.bytedeco.javacpp.Loader.load(Loader.java:530)
at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
at android.app.Activity.performCreate(Activity.java:5304)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
at android.app.ActivityThread.access$1000(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5291)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.bytedeco.javacpp.avutil" on path: DexPathList[[zip file "/data/app/com.fs.fs-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.fs.fs-2, /vendor/lib, /system/lib, /data/datalib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:251)
at org.bytedeco.javacpp.Loader.load(Loader.java:585)
at org.bytedeco.javacpp.Loader.load(Loader.java:530)
at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
at android.app.Activity.performCreate(Activity.java:5304)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
at android.app.ActivityThread.access$1000(ActivityThread.java:143)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5291)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
at dalvik.system.NativeStart.main(Native Method)
How can i solve this error?
Why error occurs?
来源：https://stackoverflow.com/questions/61114382/when-i-record-video-with-javacv-it-comes-java-lang-noclassdeffounderror-org-by