Convert mp3 to wav using xuggle exception

Question

I am trying to convert mp3 to wav, and the code is here:

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); } 

I got this exception:

 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) 

I know that xuggle can define a transformation using an extension. But why did this time fail?

thanks

edit:

earlier I can convert mp3, what parameters (MPEG 22.1KHZ 32kbps) to wav, but if I use mp3 (MPEG 44.1KHZ 62kbps), did I get this exception?

How did this happen?

Answer 1

In this, basically, xuggle complains about your codec. I think you need to try this code

 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); 

I hope you are using xuggle-xuggler-5.4.jar

Answer 2

Update:

 import com.xuggle.mediatool.IMediaReader; import com.xuggle.mediatool.IMediaViewer; import com.xuggle.mediatool.IMediaWriter; import com.xuggle.mediatool.ToolFactory; public class TranscodingExample { private static final String inputFilename = "c:/myvideo.mp4"; private static final String outputFilename = "c:/myvideo.flv"; public static void main(String[] args) {// create a media reader IMediaReader mediaReader = ToolFactory.makeReader(inputFilename); // create a media writer IMediaWriter mediaWriter = ToolFactory.makeWriter(outputFilename, mediaReader); // add a writer to the reader, to create the output file mediaReader.addListener(mediaWriter); // create a media viewer with stats enabled IMediaViewer mediaViewer = ToolFactory.makeViewer(true); // add a viewer to the reader, to see the decoded media mediaReader.addListener(mediaViewer); // read and decode packets from the source file and // and dispatch decoded audio and video to the writer while (mediaReader.readPacket() == null) ; } } 

This is code taken from Java Code Geeks. Try changing the path to your mp3 files and see if this works for you.

Code Proof

Trnscoding mp3 @ 64kbps for wav