アンドロイドデバイスでOUTPUT_FORMAT_MPEG2TSを指定する方法

Question

Androidバージョン2.3.6を使用してMediaRecorder.setOutputFormatメソッド呼び出しのパラメータとしてOutputFormat.OUTPUT_FORMAT_MPEG2TSを使用できない理由が混乱していますか？ Androidのソースで

この符号ビットがある：

/** 
* 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; 
}; 

検査装置は、Androidバージョン2.3.6を示している三星銀河ノートです。

MediaRecorder.setAudioSource（7）呼び出しは、隠しオプション（MediaRecorder.AudioSource.VOICE_COMMUNICATION == 7）であってもエラーをスローしません。

MediaRecorder.setOutputFormat（8）呼び出しが例外聖霊降臨祭にこのログ出力がスローされます。ここでは

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

はMediaRecorder.setOutputFormatの呼び出しに失敗したコードです：実際には

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(); 
    } 

} 

Answer 1

それはすべてのハードウェアに依存し、特定のデバイス上のソフトウェア実装。

Samsung galaxy noteを実行すると、アンドロイド4.0はファイルまたはソケット記述子でMPEG-TSストリームを出力できます。