【實(shí)例簡(jiǎn)介】

【實(shí)例截圖】

【核心代碼】

package com.example.videorecorddemo;

import java.io.IOException;

import java.util.Date;

import java.util.Timer;

import java.util.TimerTask;

import android.hardware.Camera;

import android.media.CamcorderProfile;

import android.media.MediaRecorder;

import android.os.Environment;

import android.util.Log;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

/**

* 錄像線(xiàn)程

*

* @author bcaiw

*

*/

public class RecordThread extends Thread {

private String TAG = "RecordThread";

private MediaRecorder mediarecorder;// 錄制視頻的類(lèi)

private SurfaceHolder surfaceHolder;

private long recordTime;

private SurfaceView surfaceview;// 顯示視頻的控件

private Camera mCamera;

public RecordThread(long recordTime, SurfaceView surfaceview,

SurfaceHolder surfaceHolder) {

Log.i(TAG, "RecordThread");

this.recordTime = recordTime;

this.surfaceview = surfaceview;

this.surfaceHolder = surfaceHolder;

}

@Override

public void run() {

Log.i(TAG, "run()");

/**

* 開(kāi)始錄像

*/

startRecord();

/**

* 啟動(dòng)定時(shí)器，到規(guī)定時(shí)間recordTime后執(zhí)行停止錄像任務(wù)

*/

Timer timer = new Timer();

timer.schedule(new TimerThread(), recordTime);

}

/**

* 獲取攝像頭實(shí)例對(duì)象，可以選在前置或者后置攝像頭

*

* @return

*/

private Camera getCameraInstance(boolean facingfront) {

int facing;

Camera cam = null;

Camera.CameraInfo cameraInfo = new Camera.CameraInfo();

if(facingfront)

facing = Camera.CameraInfo.CAMERA_FACING_FRONT;

else

facing = Camera.CameraInfo.CAMERA_FACING_BACK;

for (int camIdx = 0, cameraCount = Camera.getNumberOfCameras(); camIdx < cameraCount; camIdx ) {

Camera.getCameraInfo(camIdx, cameraInfo);

if (cameraInfo.facing == facing) {

try {

cam = Camera.open(camIdx);

break;

} catch (RuntimeException e) {

e.printStackTrace();

}

}

}

return cam;

}

/**

* 開(kāi)始錄像

*/

public void startRecord() {

Log.i(TAG, "startRecord()");

mediarecorder = new MediaRecorder();// 創(chuàng)建mediarecorder對(duì)象

mCamera = getCameraInstance(true);

// 解鎖camera

mCamera.unlock();

mediarecorder.setCamera(mCamera);

// 設(shè)置錄制視頻源為Camera(相機(jī))

mediarecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);

mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

// 設(shè)置錄制文件質(zhì)量，格式，分辨率之類(lèi)，這個(gè)全部包括了

mediarecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));

mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());

// 設(shè)置視頻文件輸出的路徑

String filePath = Environment.getExternalStorageDirectory() "/SilentRecordService/Media/VideRecordDemo.mp4";

Log.i(TAG, "startRecord(), filePath: " filePath);

mediarecorder.setOutputFile(filePath);

/*

mediarecorder = new MediaRecorder();// 創(chuàng)建mediarecorder對(duì)象

// 設(shè)置錄制音頻源為Mic

mediarecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

// 設(shè)置錄制視頻源為Camera(相機(jī))

mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

// 設(shè)置錄制完成后視頻的封裝格式THREE_GPP為3gp，MPEG_4為mp4

mediarecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

//

//mediarecorder.setAudioSamplingRate(DEFAULT_SAMPLING_RATE);

//

//mediarecorder.setAudioChannels(AudioFormat.CHANNEL_IN_MONO);

// 設(shè)置錄制的音頻編碼

mediarecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);

// 設(shè)置錄制的視頻編碼h263 h264

mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);

// 設(shè)置視頻錄制的分辨率。必須放在設(shè)置編碼和格式的后面，否則報(bào)錯(cuò)

mediarecorder.setVideoSize(176, 144);

// 設(shè)置錄制的視頻幀率。必須放在設(shè)置編碼和格式的后面，否則報(bào)錯(cuò)

mediarecorder.setVideoFrameRate(15);

mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());

// 設(shè)置視頻文件輸出的路徑

mediarecorder.setOutputFile(Environment.getExternalStorageDirectory() "/SilentRecordService/Media/VideRecordDemo.mp4");

*/

try {

// 準(zhǔn)備錄制

Log.i(TAG, "mediarecorder.prepare()");

mediarecorder.prepare();

// 開(kāi)始錄制

Log.i(TAG, "mediarecorder.start()");

mediarecorder.start();

} catch (IllegalStateException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

/**

* 停止錄制

*/

public void stopRecord() {

Log.i(TAG, "stopRecord()");

if (mediarecorder != null) {

// 停止錄制

mediarecorder.stop();

// 釋放資源

mediarecorder.release();

mediarecorder = null;

if (mCamera != null) {

mCamera.release();

mCamera = null;

}

}

}

/**

* 定時(shí)器

*

* @author bcaiw

*

*/

class TimerThread extends TimerTask {

/**

* 停止錄像

*/

@Override

public void run() {

Log.i(TAG, "TimerThread, run()");

stopRecord();

this.cancel();

}

}

}

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