目前实时抓取手机视频数据有2种方法，一种是通过camera的回调获取源数据，这里获取的源数据是没有编码的数据。
有的人发送yuv数据然后在那绘制图片，也说视频聊天，真是可笑。这种方式是可是实现视频聊天的，但是需要移植编码库
目前可移植的有，android的opencore编码
ffmpeg编码，这个网上很难找，但是也有人实现哦。（编码效率好，但是支持不了高清视频）
编码完成可以通过rtp协议发送。就可以视频啦。rtp协议什么的就不说了哦。
以上方法的代码，在这个链接最好回复我贴了代码，不是完整的。链接：http://www.eoeandroid.com/thread-51460-1-1.html
第2种方法，也就是我用的方法。
通过MediaRecorder录制。然后绑定一个localsocket，可以获取编码后的视频数据传输；
代码如下：
package com.pei; import java.io.DataInputStream; import java.io.IOException; import java.io.InputStream; import android.app.Activity; import android.os.Bundle; import android.graphics.PixelFormat; import android.media.MediaRecorder; import android.net.LocalServerSocket; import android.net.LocalSocket; import android.net.LocalSocketAddress; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.Window; import android.view.WindowManager; /** * class name：VideoCameraActivity<BR> * class description：CATCH THE VIDEODATA SEND TO RED5<BR> * PS： <BR> * * @version 1.00 2011/11/05 * @author CODYY)peijiangping */ public class VideoCameraActivity extends Activity implements SurfaceHolder.Callback, MediaRecorder.OnErrorListener, MediaRecorder.OnInfoListener { private static final int mVideoEncoder = MediaRecorder.VideoEncoder.H264; private LocalSocket receiver, sender; private LocalServerSocket lss; private MediaRecorder mMediaRecorder = null; private boolean mMediaRecorderRecording = false; private SurfaceView mSurfaceView = null; private SurfaceHolder mSurfaceHolder = null; private Thread t; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().setFormat(PixelFormat.TRANSLUCENT); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); mSurfaceView = (SurfaceView) this.findViewById(R.id.surface_camera); SurfaceHolder holder = mSurfaceView.getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); mSurfaceView.setVisibility(View.VISIBLE); receiver = new LocalSocket(); try { lss = new LocalServerSocket("VideoCamera"); receiver.connect(new LocalSocketAddress("VideoCamera")); receiver.setReceiveBufferSize(500000); receiver.setSendBufferSize(500000); sender = lss.accept(); sender.setReceiveBufferSize(500000); sender.setSendBufferSize(500000); } catch (IOException e) { finish(); return; } } @Override public void onPause() { super.onPause(); if (mMediaRecorderRecording) { stopVideoRecording(); try { lss.close(); receiver.close(); sender.close(); } catch (IOException e) { e.printStackTrace(); } } finish(); } private void stopVideoRecording() { System.out.println("stopVideoRecording"); if (mMediaRecorderRecording || mMediaRecorder != null) { if (t != null) t.interrupt(); releaseMediaRecorder(); } } private void startVideoRecording() { (t = new Thread() { public void run() { int frame_size = 20000; byte[] buffer = new byte[1024 * 64]; int num, number = 0; InputStream fis = null; try { fis = receiver.getInputStream(); } catch (IOException e1) { return; } number = 0; releaseMediaRecorder(); while (true) { System.out.println("ok"); try { num = fis.read(buffer, number, frame_size); number += num; if (num < frame_size) { System.out.println("recoend break"); break; } } catch (IOException e) { System.out.println("exception break"); break; } } initializeVideo(); number = 0; Consumer consumer = new Publisher();// Publisher继承了Consumer Thread consumerThread = new Thread((Runnable) consumer); consumer.setRecording(true);// 设置线程状态; consumerThread.start();// 开始发布数据流 DataInputStream dis = new DataInputStream(fis); try { dis.read(buffer, 0, 32); } catch (IOException e1) { e1.printStackTrace(); } byte[] aa = { 0x01, 0x42, (byte) 0x80, 0x0A, (byte) 0xFF, (byte) 0xE1, 0x00, 0x12, 0x67, 0x42, (byte) 0x80, 0x0A, (byte) 0xE9, 0x02, (byte) 0xC1, 0x29, 0x08, 0x00, 0x00, 0x1F, 0x40, 0x00, 0x04, (byte) 0xE2, 0x00, 0x20, 0x01, 0x00, 0x04, 0x68, (byte) 0xCE, 0x3C, (byte) 0x80 }; consumer.putData(System.currentTimeMillis(), aa, 33); while (true) { try { int h264length = dis.readInt(); number = 0; while (number < h264length) { int lost = h264length - number; num = fis.read(buffer, 0, frame_size < lost ? frame_size : lost); number += num; consumer.putData(System.currentTimeMillis(), buffer, num); } } catch (IOException e) { break; } } consumer.setRecording(false);// 设置线程状态; } }).start(); } private boolean initializeVideo() { System.out.println("initializeVideo"); if (mSurfaceHolder == null) return false; mMediaRecorderRecording = true; if (mMediaRecorder == null) mMediaRecorder = new MediaRecorder(); else mMediaRecorder.reset(); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mMediaRecorder.setVideoFrameRate(20); mMediaRecorder.setVideoSize(352, 288); mMediaRecorder.setVideoEncoder(mVideoEncoder); mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface()); mMediaRecorder.setMaxDuration(0); mMediaRecorder.setMaxFileSize(0); mMediaRecorder.setOutputFile(sender.getFileDescriptor()); try { mMediaRecorder.setOnInfoListener(this); mMediaRecorder.setOnErrorListener(this); mMediaRecorder.prepare(); mMediaRecorder.start(); } catch (IOException exception) { releaseMediaRecorder(); finish(); return false; } return true; } private void releaseMediaRecorder() { System.out.println("Releasing media recorder."); if (mMediaRecorder != null) { if (mMediaRecorderRecording) { try { mMediaRecorder.setOnErrorListener(null); mMediaRecorder.setOnInfoListener(null); mMediaRecorder.stop(); } catch (RuntimeException e) { System.out.println("stop fail: " + e.getMessage()); } mMediaRecorderRecording = false; } mMediaRecorder.reset(); mMediaRecorder.release(); mMediaRecorder = null; } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { System.out.println("surfaceChanged"); mSurfaceHolder = holder; if (!mMediaRecorderRecording) { initializeVideo(); startVideoRecording(); } } @Override public void surfaceCreated(SurfaceHolder holder) { System.out.println("surfaceCreated"); mSurfaceHolder = holder; } @Override public void surfaceDestroyed(SurfaceHolder holder) { System.out.println("surfaceDestroyed"); mSurfaceView = null; mSurfaceHolder = null; mMediaRecorder = null; if (t != null) { t.interrupt(); } } @Override public void onInfo(MediaRecorder mr, int what, int extra) { switch (what) { case MediaRecorder.MEDIA_RECORDER_INFO_UNKNOWN: System.out.println("MEDIA_RECORDER_INFO_UNKNOWN"); break; case MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED: System.out.println("MEDIA_RECORDER_INFO_MAX_DURATION_REACHED"); break; case MediaRecorder.MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED: System.out.println("MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED"); break; } } @Override public void onError(MediaRecorder mr, int what, int extra) { if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) { System.out.println("MEDIA_RECORDER_ERROR_UNKNOWN"); finish(); } }}