I've faced a very strange behavior: sometimes my mediarecorder crashes with an error "Stop failed" and sometimes it works fine. Is there my fault or it is a bug of the system? I cant't get what is wrong.
private void stopRecording(){
ticker.cancel();
ticker.purge();
recorder.stop();
startBtn.setText("Start");
recordInProcess = false;
markList = locWriteTask.getMarkArray();
mCamera.lock();
recorder.release();
}
private void startRecording(){
startBtn.setText("Stop");
recordInProcess = true;
recorder = new MediaRecorder();
mCamera.unlock();
recorder.setCamera(mCamera);
recorder.setPreviewDisplay(mSurfaceHolder.getSurface());
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
recorder.setMaxDuration((int) 10000000);
recorder.setVideoSize(320, 240);
recorder.setVideoFrameRate(15);
recorder.setOutputFile(FULL_PATH_TO_LOCAL_FILE + counter + MP4);
try{
recorder.prepare();
} catch (Exception e){
finish();
}
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);
ticker = new Timer();
locWriteTask = new WriteTimeLocationTimerTask(ll);
ticker.schedule(locWriteTask, 0, DELAY);
recorder.start();
}
You may catch a RuntimeException at the MediaRecorder.stop() method.
Example:
MediaRecorder mRecorder = new MediaRecorder();
File mFile = new File("The output file's absolutePath");
... //config the mRecorder
mRecorder.setOutputFile(mFile.getAbsolutePath());
... //prepare() ...
mRecorder.start();
try {
mRecorder.stop();
} catch(RuntimeException e) {
mFile.delete(); //you must delete the outputfile when the recorder stop failed.
} finally {
mRecorder.release();
mRecorder = null;
}