我很困惑为什么我不能使用OutputFormat.OUTPUT_FORMAT_MPEG2TS作为参数到MediaRecorder.setOutputFormat在android 2.3.6版本的设备上调用方法？如何指定在Android设备上的OUTPUT_FORMAT_MPEG2TS

在Android源有这样的代码位：

/**

* Defines the output format. These constants are used with

* {@link MediaRecorder#setOutputFormat(int)}.

*/

public final class OutputFormat {

/* Do not change these values without updating their counterparts

* in include/media/mediarecorder.h!

*/

private OutputFormat() {}

public static final int DEFAULT = 0;

/** 3GPP media file format*/

public static final int THREE_GPP = 1;

/** MPEG4 media file format*/

public static final int MPEG_4 = 2;

/** The following formats are audio only .aac or .amr formats **/

/** @deprecated Deprecated in favor of AMR_NB */

/** Deprecated in favor of MediaRecorder.OutputFormat.AMR_NB */

/** AMR NB file format */

public static final int RAW_AMR = 3;

/** AMR NB file format */

public static final int AMR_NB = 3;

/** AMR WB file format */

public static final int AMR_WB = 4;

/** @hide AAC ADIF file format */

public static final int AAC_ADIF = 5;

/** @hide AAC ADTS file format */

public static final int AAC_ADTS = 6;

/** @hide Stream over a socket, limited to a single stream */

public static final int OUTPUT_FORMAT_RTP_AVP = 7;

/** @hide H.264/AAC data encapsulated in MPEG2/TS */

public static final int OUTPUT_FORMAT_MPEG2TS = 8;

};

测试设备是三星Galaxy Note，显示Android版本2.3.6。

MediaRecorder.setAudioSource(7)调用不会引发错误，即使它也是隐藏选项(MediaRecorder.AudioSource.VOICE_COMMUNICATION == 7)。

MediaRecorder.setOutputFormat(8)调用抛出异常，丝毫日志的输出：

03-21 17:45:27.330: E/MediaRecorder(30622): setOutputFormat failed: -2147483648

下面是对MediaRecorder.setOutputFormat调用失败代码：

import java.io.IOException;

import android.app.Activity;

import android.content.pm.ActivityInfo;

import android.media.CamcorderProfile;

import android.media.MediaRecorder;

import android.os.Bundle;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.Window;

import android.view.WindowManager;

public class CameraStreamer extends Activity implements OnClickListener, SurfaceHolder.Callback

{

MediaRecorder recorder;

SurfaceHolder holder;

boolean recording = false;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

recorder = new MediaRecorder();

initRecorder();

setContentView(R.layout.main);

SurfaceView cameraView = (SurfaceView) findViewById(R.id.CameraView);

holder = cameraView.getHolder();

holder.addCallback(this);

holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

cameraView.setClickable(true);

cameraView.setOnClickListener(this);

}

private void initRecorder() {

recorder.setAudioSource(7); //MediaRecorder.AudioSource.VOICE_COMMUNICATION); //MediaRecorder.AudioSource.MIC);

recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

recorder.setOutputFormat(8); //MediaRecorder.OutputFormat.OUTPUT_FORMAT_MPEG2TS);

// for reference only

CamcorderProfile cpHigh = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);

int width=320, height=240;

recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);

recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

recorder.setVideoSize(width, height);

recorder.setVideoFrameRate(25);

recorder.setVideoEncodingBitRate(cpHigh.videoBitRate);

recorder.setAudioEncodingBitRate(cpHigh.audioBitRate);

recorder.setAudioChannels(1);

recorder.setAudioSamplingRate(cpHigh.audioSampleRate);

// recorder.setProfile(cpHigh); // This sets format, framerate, size, bitrate, channels, sampling rate, encoders

recorder.setOutputFile("/sdcard/videocapture_example.ts");

recorder.setMaxDuration(50000); // 50 seconds

recorder.setMaxFileSize(5000000); // Approximately 5 megabytes

}

private void prepareRecorder() {

recorder.setPreviewDisplay(holder.getSurface());

try {

recorder.prepare();

} catch (IllegalStateException e) {

e.printStackTrace();

finish();

} catch (IOException e) {

e.printStackTrace();

finish();

}

}

public void onClick(View v) {

if (recording) {

recorder.stop();

recording = false;

// Let's initRecorder so we can record again

initRecorder();

prepareRecorder();

} else {

recording = true;

recorder.start();

}

}

public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {

// TODO Auto-generated method stub

}

public void surfaceCreated(SurfaceHolder arg0) {

prepareRecorder();

}

public void surfaceDestroyed(SurfaceHolder arg0) {

if (recording) {

recorder.stop();

recording = false;

}

recorder.release();

finish();

}

}

2012-03-21

Alex

+0

你有没有解决过这个问题？我也有兴趣使用OUTPUT_FORMAT_MPEG2TS。 –

2013-09-20 17:34:59