我想在Android上创建一个视频录制器,我已经准备好了我的代码,应该可以正常工作,但是我不断收到错误消息start failed: -19
。
这是我的代码:
public boolean startRecording() {
try {
camera.unlock();
mediaRecorder = new MediaRecorder();
mediaRecorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {
@Override
public void onError(MediaRecorder mr, int what, int extra) {
Log.i(TAG, "Error");
}
});
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
Log.i(TAG, "a");
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
Log.i(TAG, "b");
mediaRecorder.setMaxDuration(maxDurationInMs); // set to 20000
String uniqueOutFile = OUTPUT_FILE + System.currentTimeMillis() + ".3gp";
File outFile = new File(uniqueOutFile);
if (outFile.exists()) {
outFile.delete();
}
mediaRecorder.setOutputFile(uniqueOutFile);
mediaRecorder.setVideoFrameRate(videoFramesPerSecond); // set to 20
mediaRecorder.setVideoSize(sView.getWidth(), sView.getHeight());
Log.i(TAG, "c");
mediaRecorder.setPreviewDisplay(holder.getSurface());
mediaRecorder.setMaxFileSize(maxFileSizeInBytes); // set to 50000
mediaRecorder.prepare();
Log.i(TAG, "d");
mediaRecorder.start();
Log.i(TAG, "e");
return true;
} catch (IllegalStateException e) {
Log.i(TAG, "f");
Log.e(TAG, e.getMessage());
e.printStackTrace();
camera.lock();
return false;
} catch (IOException e) {
Log.i(TAG, "g");
Log.e(TAG, e.getMessage());
e.printStackTrace();
camera.lock();
return false;
} catch (RuntimeException e) {
Log.i(TAG, "h");
Log.e(TAG, e.getMessage());
camera.lock();
return false;
}
}
所有的调试日志(从“a”到“d”)都被打印在日志中,因此似乎所有步骤直到
mediaRecorder.prepare()
都已正确执行。然后它捕获了一个带有消息start failed: -19
的RuntimeException
。有一个类似的问题,但这并没有解决我的问题。还有其他原因会导致这样的错误吗?