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java.io.IOException：运行exec（）时出错工作目录：null环境：null

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我在申请中使用WritingMinds/ffmpeg-android-java .

这是我的代码

loadFFmpeg();
String cmd="ffmpeg -i /storage/emulated/0/media/audio/a.mp3 -i  /storage/emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
executeFFmpeg(cmd.split(" "));

和

private void loadFFmpeg() {
    FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
    try {
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onFailure() {}

            @Override
            public void onSuccess() {}

            @Override
            public void onFinish() {}
        });
    } catch (FFmpegNotSupportedException e) {
        // Handle if FFmpeg is not supported by device
    }
}

private void executeFFmpeg(String[] cmd)
{
    /*String workFolder = getApplicationContext().getFilesDir() + "/ffmpeg";
    String environment = Environment.getExternalStorageDirectory().getAbsolutePath();
    Map<String, String> map = new HashMap<String, String>();
    map.put("Working Directory", workFolder);
    map.put("Environment",environment);*/
    FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
    try {
        // to execute "ffmpeg -version" command you just need to pass "-version"
        ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onProgress(String message) {}

            @Override
            public void onFailure(String message) {}

            @Override
            public void onSuccess(String message) {}

            @Override
            public void onFinish() {
                stop.setEnabled(false);
                play.setEnabled(true);
            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        // Handle if FFmpeg is already running
    }
}

但我得到了以下错误

6784-6962 / com.flipartstudio.playandrecord E / FFmpeg：尝试运行时出现异常：[Ljava.lang.String; @ 41803270 java.io.IOException：运行exec（）时出错 . 命令：[/ data / data / com.flipartstudio.playandrecord/files/ffmpeg，/ system / bin / ls，-l，/ data / data / com.example.foo / files / fumpeg]工作目录：null环境：null在java.lang.ProcessManager.exec（ProcessManager.java:211）的java.lang.Runtime.exec（Runtime.java:168），位于com.github的java.lang.Runtime.exec（Runtime.java:123） . hiteshsondhi88.libffmpeg.ShellCommand.run（ShellCommand.java:10）at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground（FFmpegExecuteAsyncTask.java:38）at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground（FFmpegExecuteAsyncTask.java： 10）在android.os.AsyncTask $ 2.call（AsyncTask.java:287）at java.util.concurrent.FutureTask.run（FutureTask.java:234）at android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java） ：230）java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1080）at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:573）at java.lang.Thread.run（Thread . java：856）原因d by：java.io.IOException：java.lang.Rrocesstime.exec上的java.lang.ProcessManager.exec（ProcessManager.java:209）中的java.lang.ProcessManager.exec（本机方法）中没有此类文件或目录（ Runtime.java:168）at java.lang.Runtime.exec（Runtime.java:123）at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run（ShellCommand.java:10）at com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask .doInBackground（FFmpegExecuteAsyncTask.java:38）位于java.util.concurrent的android.os.AsyncTask $ 2.call（AsyncTask.java:287）的com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground（FFmpegExecuteAsyncTask.java:10）在java.util的java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1080）的android.os.AsyncTask $ SerialExecutor $ 1.run（AsyncTask.java:230）的.FutureTask.run（FutureTask.java:234） .concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:573）at java.lang.Thread.run（Thread.java:856）

我还补充说

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.STORAGE" />
java android ffmpeg ioexception

3 回答

  • 4

    你的问题是你在 loadFFmpeg() 方法中一次性 FFmpeg ，在 executeFFmpeg() 中一次 . 所以在 executeFFmpeg() 中你的 FFmpeg 没有加载 .

    解决方案：

    你的代码应该是这样的：

    public class Main extends Activity{

FFmpeg ffmpeg;
Context context;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    context = this;

    loadFFmpeg();
    String cmd="ffmpeg -i /storage/emulated/0/media/audio/a.mp3 -i  /storage    /emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
    executeFFmpeg(cmd.split(" "));

}

private void loadFFmpeg() {
    ffmpeg = FFmpeg.getInstance(context);
    try {
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onFailure() {}

            @Override
            public void onSuccess() {}

            @Override
            public void onFinish() {}
        });
    } catch (FFmpegNotSupportedException e) {
        // Handle if FFmpeg is not supported by device
    }
}

private void executeFFmpeg(String[] cmd)
{
    try {
        ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onProgress(String message) {}

            @Override
            public void onFailure(String message) {}

            @Override
            public void onSuccess(String message) {}

            @Override
            public void onFinish() {
                stop.setEnabled(false);
                play.setEnabled(true);
            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        // Handle if FFmpeg is already running
    }
}
}
    回复于
  • 0
    Try this:

public class MainActivity extends Activity{

FFmpeg ffmpeg;
Context context;

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    context = this;

    loadFFmpeg();
    String cmd="-i /storage/emulated/0/media/audio/a.mp3 -i  /storage    /emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
    executeFFmpeg(cmd.split(" "));

}

private void loadFFmpeg() {
    ffmpeg = FFmpeg.getInstance(context);
    try {
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onFailure() {}

            @Override
            public void onSuccess() {}

            @Override
            public void onFinish() {}
        });
    } catch (FFmpegNotSupportedException e) {
        // Handle if FFmpeg is not supported by device
    }
}

private void executeFFmpeg(String[] cmd)
{
    try {
        ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onProgress(String message) {}

            @Override
            public void onFailure(String message) {}

            @Override
            public void onSuccess(String message) {}

            @Override
            public void onFinish() {
                stop.setEnabled(false);
                play.setEnabled(true);
            }
        });
    } catch (FFmpegCommandAlreadyRunningException e) {
        // Handle if FFmpeg is already running
    }
}
}
    回复于
  • 2

    Reason ：
    ffmpeg.loadBinary 是 Async . 它会立即返回，但此时任务未完成 .

    Solution ：
    您应该将您的代码放在 onSuccess() ffmpeg.loadBinary 中，如下所示：

    ffmpeg = FFmpeg.getInstance(context);
    try {
        ffmpeg.loadBinary(new LoadBinaryResponseHandler() {

            @Override
            public void onStart() {}

            @Override
            public void onFailure() {}

            @Override
            public void onSuccess() {
                String cmd="ffmpeg -i /storage/emulated/0/media/audio/a.mp3 -i  /storage/emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
                executeFFmpeg(cmd.split(" "));
            }

            @Override
            public void onFinish() {}
        });
    } catch (FFmpegNotSupportedException e) {
        // Handle if FFmpeg is not supported by device
    }
    回复于

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