我正在开发Android应用程序，我已经要求记录调用并将它们转换为WAVE（.wav）格式并发送到服务器。
我能够在手机中成功录制和保存音频。录制的文件mime类型是3gpp，现在我想将这个3gpp文件转换为wav。我尝试使用FFMPEG但无法转换它。我在这里发布我的代码，任何帮助都会感激不尽。
将录制的文件从aac转换为wav时，我遇到错误
Exception while trying to run: [Ljava.lang.String;@64075a0
java.io.IOException: Cannot run program "/data/user/0/com.sms.example.example/files/ffmpeg": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:983)
at java.lang.Runtime.exec(Runtime.java:691)
at java.lang.Runtime.exec(Runtime.java:559)
at com.github.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)
at android.os.AsyncTask$2.call(AsyncTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:133)
at java.lang.ProcessImpl.start(ProcessImpl.java:128)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:964)
记录器服务
public class CallService extends Service {
//util object creation
NetworkUtils networkUtils;
SharedPref sharedPref;
MediaRecorder recorder;
File audiofile;
String name, phonenumber;
String audio_format;
public String Audio_Type;
int audioSource;
Context context;
private Handler handler;
Timer timer;
Boolean offHook = false, ringing = false;
Toast toast;
Boolean isOffHook = false;
private boolean recordstarted = false;
private static final String ACTION_IN = "android.intent.action.PHONE_STATE";
private static final String ACTION_OUT = "android.intent.action.NEW_OUTGOING_CALL";
private CallBr br_call;
public String file_name="", recordedFileName="",uploadedFileName="", base64_file="", statusMessage="";
public int statusCode, file_size=0, delay = 1000,period = 5000;
public FFmpeg fFmpeg;
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onDestroy() {
Log.d("service", "destroy");
super.onDestroy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
sharedPref = new SharedPref(this);
networkUtils = new NetworkUtils(this);
final IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_OUT);
filter.addAction(ACTION_IN);
this.br_call = new CallBr();
this.registerReceiver(this.br_call, filter);
fFmpeg = FFmpeg.getInstance(CallService.this);
Timer task = new Timer();
task.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
if (networkUtils.checkConnection()){
}else{
// Toast.makeText(CallService.this, getResources().getString(R.string.no_connection), Toast.LENGTH_SHORT).show();
}
}
}, delay, period);
// if(terminate != null) {
// stopSelf();
// }
return START_STICKY;
}
public class CallBr extends BroadcastReceiver {
Bundle bundle;
String state;
String inCall, outCall;
public boolean wasRinging = false;
public File sampleDir;
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(ACTION_IN)) {
if ((bundle = intent.getExtras()) != null) {
state = bundle.getString(TelephonyManager.EXTRA_STATE);
if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
inCall = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
wasRinging = true;
Toast.makeText(context, "IN : " + inCall, Toast.LENGTH_LONG).show();
} else if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
if (wasRinging == true) {
Toast.makeText(context, "ANSWERED", Toast.LENGTH_LONG).show();
String out = new SimpleDateFormat("dd-MM-yyyy hh-mm-ss").format(new Date());
sampleDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "/OfficeRecordings/");
if (!sampleDir.exists()) {
sampleDir.mkdirs();
}
Log.d("TService", "onReceive: "+sampleDir);
file_name = "Incoming";
String path = Environment.getExternalStorageDirectory().getAbsolutePath();
// try {
// audiofile = File.createTempFile(file_name, ".wav", sampleDir);
// recordedFileName = sampleDir + String.valueOf(System.currentTimeMillis() + ".wav");
//
// } catch (IOException e) {
// e.printStackTrace();
// }
// recordedFileName = sampleDir+"_"+ file_name +String.valueOf(System.currentTimeMillis() + ".wav");
uploadedFileName = sharedPref.getStringValue("userId")+"_"+sharedPref.getStringValue("mobile_number_prefs")+"_" +file_name +String.valueOf(System.currentTimeMillis()+ ".aac");
recordedFileName = sampleDir+"/"+uploadedFileName;
recorder = new MediaRecorder();
// recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
// recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.AAC_ADTS);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
// recorder.setOutputFile(audiofile.getAbsolutePath());
recorder.setOutputFile(recordedFileName);
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
recorder.start();
recordstarted = true;
}
} else if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
wasRinging = false;
Toast.makeText(context, "REJECT || DISCO", Toast.LENGTH_LONG).show();
if (recordstarted) {
recorder.stop();
recordstarted = false;
if (recordedFileName.isEmpty()){
}else{
convertFileToBase64(context);
}
}
}
}
} else if (intent.getAction().equals(ACTION_OUT)) {
if ((bundle = intent.getExtras()) != null) {
outCall = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Toast.makeText(context, "OUT : " + outCall, Toast.LENGTH_LONG).show();
sampleDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "/OfficeRecordings/");
if (!sampleDir.exists()) {
sampleDir.mkdirs();
}
Log.d("TService", "onReceive: "+sampleDir);
file_name = "Outgoing";
String path = Environment.getExternalStorageDirectory().getAbsolutePath();
uploadedFileName = sharedPref.getStringValue("userId")+"_"+sharedPref.getStringValue("mobile_number_prefs")+"_" +file_name +String.valueOf(System.currentTimeMillis() + ".amr");
recordedFileName = sampleDir+"/"+uploadedFileName;
// try {
// audiofile = File.createTempFile(file_name, ".wav", sampleDir);
// recordedFileName = audiofile.getName();
//
// } catch (IOException e) {
// e.printStackTrace();
// }
recorder = new MediaRecorder();
// recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL);
// recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
recorder.setOutputFile(audiofile.getAbsolutePath());
try {
recorder.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
recorder.start();
recordstarted = true;
if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
wasRinging = false;
Toast.makeText(context, "REJECT || DISCO", Toast.LENGTH_LONG).show();
if (recordstarted) {
recorder.stop();
recordstarted = false;
if (recordedFileName.isEmpty()){
}else{
convertFileToBase64(context);
}
}
}
}
}
// LocalBroadcastManager.getInstance(context).sendBroadcast(new Intent("callRecord"));
}
public void convertFileToBase64(Context context){
File uploadedFile = new File(recordedFileName);
Log.d("CallService", "convertFileToBase64: "+uploadedFile);
String[] cmd = new String[4];
cmd[0] = "ffmpeg ";
cmd[1] = "-i ";
cmd[2] = recordedFileName+" ";
cmd[3] = " "+sampleDir+"/"+"sampleAudio.wav";
execFFmpegBinary(cmd);
file_size = Integer.parseInt(String.valueOf(uploadedFile.length()/1024));
Log.d("CallService", "onReceive: "+file_size);
byte[] byteArray = new byte[1024*11];
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
// File uploadedFile = new File(sampleDir+"/"+recordedFileName);
Uri path = Uri.fromFile(uploadedFile);
// Uri path = Uri.fromFile(uploadedFile);
Log.d("CallService", "convertFileToBase64: "+path);
try {
InputStream inputStream = context.getContentResolver().openInputStream(path);
byte[] b = new byte[1024 * 11];
int bytesRead = 0;
while ((bytesRead = inputStream.read(b)) != -1) {
byteArrayOutputStream.write(b, 0, bytesRead);
}
byteArray = byteArrayOutputStream.toByteArray();
Log.e("Byte array", ">" + byteArray);
} catch (IOException e) {
e.printStackTrace();
}
base64_file = Base64.encodeToString(byteArray, Base64.DEFAULT);
Log.d("CallRecorder", "base64File: "+base64_file);
if (!(base64_file.isEmpty())){
Log.d("CallService", "convertFileToBase64: base64 not empty");
if (networkUtils.checkConnection()){
uploadRecordedFileToServer();
}else{
saveFileToLocalDB();
Toast.makeText(context, getString(R.string.no_connection), Toast.LENGTH_SHORT).show();
}
}
}
private void execFFmpegBinary(final String[] command) {
try {
fFmpeg.execute(command, new ExecuteBinaryResponseHandler() {
@Override
public void onFailure(String s) {
Log.d("CallService", "onFailure: "+s);
Toast.makeText(CallService.this, "Failed to convert", Toast.LENGTH_SHORT).show();
}
@Override
public void onSuccess(String s) {
Log.d("CallService", "onSuccess: "+s);
}
@Override
public void onProgress(String s) {
Log.d("CallService", "Started command : ffmpeg "+command);
Log.d("CallService", "progress : "+s);
// progressDialog.setMessage("Processing\n"+s);
}
@Override
public void onStart() {
Log.d("CallService", "Started command : ffmpeg " + command);
// progressDialog.setMessage("Processing...");
// progressDialog.show();
}
@Override
public void onFinish() {
Log.d("CallService", "Finished command : ffmpeg "+command);
// progressDialog.dismiss();
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
// do nothing for now
}
}
艾米的帮助真的很感激......提前谢谢!!!
答案 0 :(得分：1)
请在执行命令之前先调用load binary方法。
FFmpeg ffmpeg = FFmpeg.getInstance(this);
try {
ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
@Override
public void onStart() {
}
@Override
public void onFailure() {
}
@Override
public void onSuccess() {
}
@Override
public void onFinish() {
}
});
} catch (FFmpegNotSupportedException e) {
}
再试一次，如果不能正常工作，请告诉我。