我正在尝试将 mp3 转换为 wav，代码在这里：
String mp3 = "F:\\work\\pic2talk38512.mp3";
String wav = "F:\\work\\pic2talk38512.wav";
TranscodeAudioAndVideo.transcodeTest(mp3, wav);
public static void transcode(String sourceUrl, String destinationUrl) {
IMediaReader reader = ToolFactory.makeReader(sourceUrl);
reader.addListener(ToolFactory.makeWriter(destinationUrl, reader));
while (reader.readPacket() == null)
do {
} while (false);
}
我得到了这个异常：
java.lang.UnsupportedOperationException: could not guess codec
at com.xuggle.xuggler.IContainerFormat.establishOutputCodecId(IContainerFormat.java:454)
at com.xuggle.xuggler.IContainerFormat.establishOutputCodecId(IContainerFormat.java:327)
at com.xuggle.xuggler.IContainerFormat.establishOutputCodecId(IContainerFormat.java:300)
at com.xuggle.mediatool.MediaWriter.addStreamFromContainer(MediaWriter.java:1134)
at com.xuggle.mediatool.MediaWriter.getStream(MediaWriter.java:1039)
at com.xuggle.mediatool.MediaWriter.encodeVideo(MediaWriter.java:742)
at com.xuggle.mediatool.MediaWriter.encodeVideo(MediaWriter.java:783)
at com.xuggle.mediatool.MediaWriter.onVideoPicture(MediaWriter.java:1434)
at com.xuggle.mediatool.AMediaToolMixin.onVideoPicture(AMediaToolMixin.java:166)
at com.xuggle.mediatool.MediaReader.dispatchVideoPicture(MediaReader.java:610)
at com.xuggle.mediatool.MediaReader.decodeVideo(MediaReader.java:519)
at com.xuggle.mediatool.MediaReader.readPacket(MediaReader.java:475)
at com.renren.intl.soundsns.pictalk.utils.TranscodeAudioAndVideo.transcodeTest(TranscodeAudioAndVideo.java:75)
at com.renren.intl.soundsns.pictalk.utils.TranscodeAudioAndVideoTest.convert(TranscodeAudioAndVideoTest.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我知道xuggle可以通过扩展来计算出转换。但是为什么这次失败了？
thanks
edit:
以前我可以将 mp3 其参数（MPEG 22.1KHZ 32kbps）转换为 wav，但是如果我使用 mp3（MPEG 44.1KHZ 62kbps）我得到这个异常？
这是怎么发生的？
在这里，基本上 xuggle 是在抱怨你的编解码器。我认为你需要尝试这个代码
String mp3 = "F:\\work\\pic2talk38512.mp3";
String wav = "F:\\work\\pic2talk38512.wav";
IMediaReader mediaReader = ToolFactory.makeReader(mp3);
IMediaWriter mediaWriter = ToolFactory.makeWriter(wav, mediaReader);
mediaReader.addListener(mediaWriter);
// IMediaViewer mediaViewer = ToolFactory.makeViewer(true);
// mediaReader.addListener(mediaViewer);
while (mediaReader.readPacket() == null);
我希望你正在使用xuggle-xuggler-5.4.jar
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