Question

当我尝试使用ffmpeg android合并文件时出现此错误：

D/myapp: /data/data/myapp/files/concat.txt: Invalid data found when processing input
E/FFmpeg: Error running FFmpeg binary
    java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Process.exitValue()' on a null object reference
        at nl.bravobit.ffmpeg.CommandResult.getOutputFromProcess(CommandResult.java:18)
        at nl.bravobit.ffmpeg.FFcommandExecuteAsyncTask.doInBackground(FFcommandExecuteAsyncTask.java:49)
        at nl.bravobit.ffmpeg.FFcommandExecuteAsyncTask.doInBackground(FFcommandExecuteAsyncTask.java:12)
        at android.os.AsyncTask$2.call(AsyncTask.java:292)
        at java.util.concurrent.FutureTask.run(FutureTask.java:237)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
        at java.lang.Thread.run(Thread.java:818)

这是我正在使用的图书馆

implementation 'nl.bravobit:android-ffmpeg:1.1.7'

这是我的代码中生成“ concat.txt”文件的部分：

File concatF = new File(dirPath, "concat.txt");
try{
    fileWriter = new FileWriter(concatF);
}catch (Exception exc){
    return;
}
for(String file : filesToConcat){
    try {
        fileWriter.append("file '" + file + "'\n");
    }catch (Exception exc){
        Log.d("myapp", exc);
    }
}
try {
    fileWriter.append("#");
    fileWriter.close();
}catch (Exception exc){
    return;
}

这是输出的“ concat.txt”文件（这些文件位于concat.txt文件的同一文件夹中，因此仅输入名称而不包含路径也应起作用）：

file 'video1.ts'
file 'video2.ts'
file 'video3.ts'
file 'video4.ts'
file 'video5.ts'
#

这是我的concat命令：

File concatF = new File(dirPath, "concat.txt");
File output = new File(dirPath, "output.ts");
String[] command = new String[]{"-f", "concat", "-safe", "0", "-i", concatF.toString(), "-c", "copy", output.toString()};

ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
    @Override
    public void onStart() {}

    @Override
    public void onProgress(String message) {}

    @Override
    public void onFailure(String message) {}

    @Override
    public void onSuccess(String message) {
        Log.d("myapp", "Success");
    }

    @Override
    public void onFinish() {}
});

此外，在Windows上使用相同的“ concat.txt”和视频文件，上述命令也可以正常工作。有帮助吗？

无法连接文件ffmpeg：处理输入时发现无效数据

0 个答案: