android视频录制例子

最近写了一个视频录制的例子，做下练习。看似简单的视频录制写起来问题还真不少，网上也有很多关于视频录制的代码，但是在我的手机上总是出错，是不是水土不服？我还试过google SDK文档上的那个录制的例子，不过也没有成功。主要遇到的问题就是只要我在录制前预览，就无法进行录制或者录制出来的视频，声音正常但是图像是花的。试了很多种方法也没有做到预览和录制都正常。

以下是没有预览就录制的例子。在U880上测试是正常的。有需要的可以参考看看，或者帮忙测测在其它型号机器上是否运行正常。

main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="horizontal" >    <!-- 视频预览窗口 -->    <SurfaceView        android:id="@+id/sv_show"        android:layout_width="720px"        android:layout_height="480px"        android:layout_centerHorizontal="true"        android:layout_centerVertical="true" />    <!-- 录制时间显示 -->    <LinearLayout        android:id="@+id/ll_timer"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true"        android:layout_marginLeft="5dp"        android:gravity="center_vertical"        android:visibility="gone" >        <ImageView            android:id="@+id/iv_recorderStateImage"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:src="@drawable/recorder_state_recorder" />        <TextView            android:id="@+id/tv_recorderTime"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="3dp"            android:text="00:00"            android:textColor="@android:color/white"            android:textSize="25sp"            android:textStyle="bold" />    </LinearLayout>    <!-- 录制控制按钮 -->    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_alignParentRight="true"        android:layout_marginRight="4dp" >        <Button            android:id="@+id/bt_recorder"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:text="@string/recorder" />        <Button            android:id="@+id/bt_stop"            android:layout_width="60dp"            android:layout_height="wrap_content"            android:enabled="false"            android:text="@string/stop" />    </LinearLayout></RelativeLayout>

用到了一个drawable资源

<?xml version="1.0" encoding="utf-8"?><shape    xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval" >    <size         android:width="10dp"        android:height="10dp"/>    <solid         android:color="#f00"        /></shape>

TestRecorderVideoActivity.java

package com.lxl.testrecordervideo;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.View.OnClickListener;import android.view.WindowManager;import android.widget.Button;import android.widget.LinearLayout;import android.widget.TextView;public class TestRecorderVideoActivity extends Activity implements OnClickListener {private Button bt_recorder, bt_stop;private TextView tv_recorderTime;private LinearLayout layout;private SurfaceView sv_show;private SurfaceHolder surfaceHolder;private RecorderService recorder;Timer timer = null;  // 统计时间    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                init();    }        /**     * 初始化控件     */private void init() {bt_recorder = (Button) findViewById(R.id.bt_recorder);bt_stop = (Button) findViewById(R.id.bt_stop);tv_recorderTime = (TextView) findViewById(R.id.tv_recorderTime);layout = (LinearLayout) findViewById(R.id.ll_timer);sv_show = (SurfaceView) findViewById(R.id.sv_show);bt_recorder.setOnClickListener(this);bt_stop.setOnClickListener(this);sv_show = (SurfaceView) findViewById(R.id.sv_show);surfaceHolder = sv_show.getHolder();surfaceHolder.setKeepScreenOn(true);  // 保持屏幕高亮surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.bt_recorder:// 录制try {brightnessMax();  // 录制时让屏幕高亮Log.i("info", "开始高亮");recorder = new RecorderService(surfaceHolder );recorder.startRecorder();bt_recorder.setEnabled(false);bt_stop.setEnabled(true);timer = new Timer();timer.schedule(new mTimerTask(), 0, 1000);  // 启动录制时间显示} catch (Exception e) {Log.w("info", "录制发生异常：" + e.getMessage());e.printStackTrace();}break;case R.id.bt_stop:// 执行停止录制操作timer.cancel();  // 停止录制时间显示timer = null;layout.setVisibility(View.GONE);  //取消时间显示recorder.stopRecorder();bt_recorder.setEnabled(true);bt_stop.setEnabled(false);brightnessMin();  // 停止高亮break;default:break;}}private class mTimerTask extends TimerTask {private long start_time;private long end_time;private SimpleDateFormat simpleDateFormat;public mTimerTask() {super();// 设置录制时间布局显示layout.setVisibility(View.VISIBLE);start_time = System.currentTimeMillis();  // 记录开始时间simpleDateFormat = new SimpleDateFormat("mm:ss");}@Overridepublic void run() {// 计算从开始到现在所用的时间 end_time = System.currentTimeMillis();Date date = new Date(end_time - start_time);// 通知主线程显示Message msg = new Message();msg.what = UPDATETIME;msg.obj = simpleDateFormat.format(date);handler.sendMessage(msg);}}private static final int UPDATETIME = 1;Handler handler = new Handler() {public void handleMessage(android.os.Message msg) {switch (msg.what) {case UPDATETIME:tv_recorderTime.setText(msg.obj.toString());break;default:break;}}};@Overrideprotected void onDestroy() {super.onDestroy();if(recorder != null) {recorder.releaseRecorder();}}/** * 设置屏幕最大亮度 */private void brightnessMax() {WindowManager.LayoutParams lp = getWindow().getAttributes();Log.i("info", "设置前的亮度："+lp.screenBrightness);lp.screenBrightness = 1.0f;getWindow().setAttributes(lp);}/** * 停止屏幕高亮 */private void brightnessMin() {WindowManager.LayoutParams lp = getWindow().getAttributes();Log.i("info", "设置前的亮度："+lp.screenBrightness);lp.screenBrightness = -1.0f;getWindow().setAttributes(lp);}}

RecorderService.java

package com.lxl.testrecordervideo;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import android.media.CamcorderProfile;import android.media.MediaRecorder;import android.os.Environment;import android.util.Log;import android.view.SurfaceHolder;public class RecorderService {private MediaRecorder recorder;private SurfaceHolder surfaceHolder;public RecorderService(SurfaceHolder surfaceHolder ) {this.surfaceHolder = surfaceHolder;}/** * 开始录制 * @throws Exception  */public void startRecorder() throws Exception {initRecorder();  // 初始化// 准备刻录recorder.prepare();// 开始刻录recorder.start();}/** * 初始化MediaRecorder */private void initRecorder() {recorder = new MediaRecorder();// 设置音频来源recorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 设置视频来源recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);recorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));  //可行，质量优，就是文件有些大！//// 设置文件的输出格式//recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//// 设置音频编码//recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);//// 设置视频编码//recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);// 设置视频宽高//recorder.setVideoSize(176, 144);  //720*480 写了没什么效果！！// 设置视频帧率//recorder.setVideoFrameRate(5);  // 没有效果！！！recorder.setPreviewDisplay(surfaceHolder.getSurface());// 设置文件的输出路径recorder.setOutputFile(getOutputMediaFile().getAbsolutePath());}/** * 停止录制 */public void stopRecorder() {if(recorder != null){recorder.stop();  // 停止录制recorder.reset();  // 重置MediaRecorder}}public void releaseRecorder() {if(recorder != null) {recorder.release();  // 释放资源recorder = null;}}/** * 获取一个用于保存视频文件的File *  * @return */private static File getOutputMediaFile() {// 在SD卡上创建一个自己定义的文件夹File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), "testRecorder_3gp");if (!mediaStorageDir.exists()) {if (!mediaStorageDir.mkdirs()) {Log.d("info", "failed to create directory :: testRecorder_3gp");return null;}}// 创建一个视频文件String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());File mediaFile = new File(mediaStorageDir.getPath() + File.separator + "VID_" + timeStamp + ".3gp");return mediaFile;}}

Manifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.lxl.testrecordervideo"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk android:minSdkVersion="8" />        <!-- sdcard的写权限 -->    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <!-- 相机的使用权限 -->    <uses-permission android:name="android.permission.CAMERA"/>    <!-- 媒体刻录权限 -->    <uses-permission android:name="android.permission.RECORD_AUDIO"/>        <uses-feature android:name="android.hardware.camera" /> <uses-feature android:name="android.hardware.camera.autofocus" />        <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name" >        <activity            android:name=".TestRecorderVideoActivity"            android:label="@string/app_name"            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"            android:screenOrientation="landscape" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>