安卓：合併兩個視頻

Question

我要合併在Android的兩個視頻我下面這個鏈接https://code.google.com/p/mp4parser/但它不是爲我工作，所以請幫我感謝這裏是我的代碼和日誌貓錯誤： -

代碼：

MovieCreator mc = new MovieCreator（）;

try { 
     Movie video = mc.build(Channels.newChannel(MainActivity.class.getResourceAsStream("/video.mp4"))); 

    Movie audio = mc.build(Channels.newChannel(MainActivity.class.getResourceAsStream("/funnysardar.mp4"))); 


    List<Track> videoTracks = video.getTracks(); 
    video.setTracks(new LinkedList<Track>()); 

    List<Track> audioTracks = audio.getTracks(); 


    for (Track videoTrack : videoTracks) { 
     video.addTrack(new AppendTrack(videoTrack, videoTrack)); 
    } 
    for (Track audioTrack : audioTracks) { 
     video.addTrack(new AppendTrack(audioTrack, audioTrack)); 
    } 

    IsoFile out = new DefaultMp4Builder().build(video); 
    FileOutputStream fos = new FileOutputStream(new File(String.format("output.mp4"))); 
    out.getBox(fos.getChannel()); 
    fos.close(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
} 

日誌貓錯誤是： -

07-29 07:29:08.120: E/AndroidRuntime(6456): FATAL EXCEPTION: main 
07-29 07:29:08.120: E/AndroidRuntime(6456): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.merge/com.example.merge.MainActivity}: java.lang.NullPointerException 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.os.Handler.dispatchMessage(Handler.java:99) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.os.Looper.loop(Looper.java:123) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread.main(ActivityThread.java:3683) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at java.lang.reflect.Method.invokeNative(Native Method) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at java.lang.reflect.Method.invoke(Method.java:507) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at dalvik.system.NativeStart.main(Native Method) 
07-29 07:29:08.120: E/AndroidRuntime(6456): Caused by: java.lang.NullPointerException 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at java.nio.channels.Channels$ReadableByteChannelImpl.read(Channels.java:350) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.coremedia.iso.AbstractBoxParser.parseBox(AbstractBoxParser.java:55) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.coremedia.iso.IsoFile.next(IsoFile.java:162) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.coremedia.iso.IsoFile.hasNext(IsoFile.java:138) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.googlecode.mp4parser.util.LazyList$1.hasNext(LazyList.java:55) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.coremedia.iso.IsoFile.getMovieBox(IsoFile.java:241) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:57) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at com.example.merge.MainActivity.onCreate(MainActivity.java:32) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
07-29 07:29:08.120: E/AndroidRuntime(6456):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 

Answer 1

com.coremedia.iso.PropertyBoxParserImpl; 

InputStream inputStream = getClass().getResourceAsStream("/isoparser-default.properties"); 

在Android中的項目，這樣的：inputStream = null;