android 视频录制源代码

package com.media.Media; import java.io.File; import java.io.IOException; import android.app.Activity; import android.media.MediaRecorder; import android.os.Bundle; import android.os.Environment; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class VideoActivity extends Activity { private File myRecAudioFile; private SurfaceView mSurfaceView; private SurfaceHolder mSurfaceHolder; private Button buttonStart; private Button buttonStop; private File dir; private MediaRecorder recorder; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.video); mSurfaceView = (SurfaceView) findViewById(R.id.videoView); mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); buttonStart=(Button)findViewById(R.id.start); buttonStop=(Button)findViewById(R.id.stop); File defaultDir = Environment.getExternalStorageDirectory(); String path = defaultDir.getAbsolutePath()+File.separator+"V"+File.separator;//创建文件夹存放视频 dir = new File(path); if(!dir.exists()){ dir.mkdir(); } recorder = new MediaRecorder(); buttonStart.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { recorder(); } }); buttonStop.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { recorder.stop(); recorder.reset(); recorder.release(); recorder=null; } }); } public void recorder() { try { myRecAudioFile = File.createTempFile("video", ".3gp",dir);//创建临时文件 recorder.setPreviewDisplay(mSurfaceHolder.getSurface());//预览 recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);//视频源 recorder.setAudioSource(MediaRecorder.AudioSource.MIC); //录音源为麦克风 recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//输出格式为3gp recorder.setVideoSize(800, 480);//视频尺寸 recorder.setVideoFrameRate(15);//视频帧频率 recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);//视频编码 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);//音频编码 recorder.setMaxDuration(10000);//最大期限 recorder.setOutputFile(myRecAudioFile.getAbsolutePath());//保存路径 recorder.prepare(); recorder.start(); } catch (IOException e) { e.printStackTrace(); } } }