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我下载了 mp4parser 的最新源代码，并使用它来组合两个 mp4 文件。当我尝试合并两个 mp4 视频时，应用程序崩溃了。

当我运行这行代码时

  MovieCreator.build("mnt/sdcard/CamVideo/0.mp4")

该应用程序崩溃和崩溃日志是

  08-11 17:27:49.023: E/AndroidRuntime(24864): FATAL EXCEPTION: main
  08-11 17:27:49.023: E/AndroidRuntime(24864): java.lang.ArrayIndexOutOfBoundsException:             length=0; index=0
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.googlecode.mp4parser.authoring.samples.DefaultMp4SampleList.<init>(DefaultMp4SampleList.java:52)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.coremedia.iso.boxes.mdat.SampleList.<init>(SampleList.java:33)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.googlecode.mp4parser.authoring.Mp4TrackImpl.<init>(Mp4TrackImpl.java:59)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:58)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:39)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.coderzheaven.pack.CustomCameraActivity.MergeVideos(CustomCameraActivity.java:200)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.coderzheaven.pack.CustomCameraActivity$1.onClick(CustomCameraActivity.java:108)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.view.View.performClick(View.java:4274)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.view.View$PerformClick.run(View.java:17357)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.os.Handler.handleCallback(Handler.java:615)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.os.Handler.dispatchMessage(Handler.java:92)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.os.Looper.loop(Looper.java:137)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at android.app.ActivityThread.main(ActivityThread.java:4949)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at java.lang.reflect.Method.invokeNative(Native Method)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at java.lang.reflect.Method.invoke(Method.java:511)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1043)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
  08-11 17:27:49.023: E/AndroidRuntime(24864):  at dalvik.system.NativeStart.main(Native Method)

我正在使用示例代码“isoparser-custom.properties”和“isoparser-default.properties”中的相同属性文件

我期待电影对象应该正确构建。谁能告诉我我在这方面做错了什么，或者可以向我发送合并两个 mp4 文件的完整功能代码。

已编辑：我从 maven 项目（ http://repo1.maven.org/maven2/com/googlecode/mp4parser/isoparser/1.0.2/ ） 下载了这个文件“isoparser-1.0.2.jar” ，但是应用程序因此崩溃了崩溃报告

  08-18 17:32:20.571: E/AndroidRuntime(31446): FATAL EXCEPTION: main
  08-18 17:32:20.571: E/AndroidRuntime(31446): java.lang.ExceptionInInitializerError
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at java.lang.Class.classForName(Native Method)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at java.lang.Class.forName(Class.java:217)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at java.lang.Class.forName(Class.java:172)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coremedia.iso.PropertyBoxParserImpl.createBox(PropertyBoxParserImpl.java:86)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coremedia.iso.AbstractBoxParser.parseBox(AbstractBoxParser.java:102)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.googlecode.mp4parser.BasicContainer.next(BasicContainer.java:155)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.googlecode.mp4parser.BasicContainer.hasNext(BasicContainer.java:131)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.googlecode.mp4parser.util.LazyList$1.hasNext(LazyList.java:55)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coremedia.iso.IsoFile.getMovieBox(IsoFile.java:109)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:48)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:35)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coderzheaven.pack.CustomCameraActivity.MergeVideos(CustomCameraActivity.java:200)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coderzheaven.pack.CustomCameraActivity$1.onClick(CustomCameraActivity.java:108)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.view.View.performClick(View.java:3517)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.view.View$PerformClick.run(View.java:14155)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.os.Handler.handleCallback(Handler.java:605)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.os.Handler.dispatchMessage(Handler.java:92)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.os.Looper.loop(Looper.java:137)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at android.app.ActivityThread.main(ActivityThread.java:4666)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at java.lang.reflect.Method.invokeNative(Native Method)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at java.lang.reflect.Method.invoke(Method.java:511)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at dalvik.system.NativeStart.main(Native Method)
  08-18 17:32:20.571: E/AndroidRuntime(31446): Caused by: java.lang.NoClassDefFoundError: org.aspectj.runtime.reflect.Factory
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coremedia.iso.boxes.FileTypeBox.ajc$preClinit(FileTypeBox.java:1)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  at com.coremedia.iso.boxes.FileTypeBox.<clinit>(FileTypeBox.java:1)
  08-18 17:32:20.571: E/AndroidRuntime(31446):  ... 24 more
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1 回答 1

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当您自己构建 mp4parser 时，您没有调用 aspectJ 编译器/编译时编织。请使用预编译版本 - 它们在maven Central上可用- 或确保调用编译时编织。

Sonatype OSS 暂存存储库中提供了比 Maven Central 更新的版本。在存储库选项卡的标题中，请选择“Nexus Managed Repositories”（而不是 User Managed Repositories）并搜索 mp4parser。

如果您不使用 maven 或 gradle 等依赖项管理工具，请确保包含AspectJ 运行时 jar（目前为 1.8.0 版）。

Grüße，塞巴斯蒂安

于 2014-08-25T06:22:59.883 回答