如何将视频和音频合并到一个文件中[Android Q]

如何解决如何将视频和音频合并到一个文件中[Android Q]

我正在尝试使用 Google M4parser 将视频和音频混合到一个视频文件中，我创建了如下必要的路径：

 path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Download";
 audioPath = path + "/" + "audio.m4a";
 videoNoSoundpath = path + "/" + "video.mp4";
 finalVideoPath = path + "/out.mp4";

为确保所有文件都存在，我放置了一个日志：

 Log.d("APP:","SIZE AUdio: " + FileUtils.getSize(videoNoSoundpath));
 Log.d("APP:","SIZE VIDEO: " + FileUtils.getSize(audioPath));

我可以看到每个文件的大小：

1601725413.214 14511-15076/maa.abc D/APP:: SIZE AUdio: 4.101MB
1601725413.215 14511-15076/maa.abc D/APP:: SIZE VIDEO: 156.150KB

当我运行下面的代码时，除Android Q以外，所有Android版本都可以正常工作：

 Mp4ParserAudiomuxer mp4ParserAudiomuxer = new Mp4ParserAudiomuxer();
 boolean isOK = mp4ParserAudiomuxer.mux(videoNoSoundpath,audioPath,finalVideoPath);
 mSubscriber.notifyData(isOK);
 Log.d("APP:",isOK ? " OK " : "NOT OK");

您可以找到完整的mux方法 here

错误日志：

java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.List com.coremedia.iso.Boxes.MovieBox.getBoxes(java.lang.class)' on a null object reference
    at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:51)
    at com.googlecode.mp4parser.authoring.container.mp4.MovieCreator.build(MovieCreator.java:38)
    at maa.abc.utils.mediautils.Mp4ParserAudiomuxer.mux(Mp4ParserAudiomuxer.java:24)
    at 

maa.abc.ui.activities.EditVideo.lambda$audioVideoMigration$7$EditVideo(EditVideo.java:330)
        at maa.abc.ui.activities.-$$Lambda$EditVideo$7NICJDo6IH3OsEAcyQtNXlJY-CI.call(UnkNown Source:2)
        at com.jyuesong.android.schedule.JObservable$2.run(JObservable.java:52)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:462)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:919)

问题出在这里：video = new MovieCreator().build(videoFile);