diff --git a/README.md b/README.md
index 8f02fb4..f87f32c 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ allprojects {
 Step 2. Add the dependency  
 ```java
 dependencies {
-	        implementation 'com.github.jiangdongguo:AndroidUSBCamera:2.1.0'
+	       implementation 'com.github.jiangdongguo:AndroidUSBCamera:2.2.8'
 }
 ```
 ### 2. APIs Introduction  
@@ -33,7 +33,7 @@ mCameraHelper = UVCCameraHelper.getInstance();
 // set default preview size
  mCameraHelper.setDefaultPreviewSize(1280,720);
 // set default frame format，defalut is UVCCameraHelper.Frame_FORMAT_MPEG
-// if using mpeg can not record mp4,please try yuv(version 2.1.0 do not support)
+// if using mpeg can not record mp4,please try yuv
 // mCameraHelper.setDefaultFrameFormat(UVCCameraHelper.FRAME_FORMAT_YUYV);	
 mCameraHelper.initUSBMonitor(this, mUVCCameraView, mDevConnectListener); 
 ```
@@ -113,7 +113,7 @@ RecordParams params = new RecordParams();
                     params.setRecordPath(videoPath);
                     params.setRecordDuration(0);                        // 0,do not cut save
                     params.setVoiceClose(mSwitchVoice.isChecked());    // is close voice
-                    mCameraHelper.startRecording(params, new AbstractUVCCameraHandler.OnEncodeResultListener() {
+                    mCameraHelper.startPusher(params, new AbstractUVCCameraHandler.OnEncodeResultListener() {
                         @Override
                         public void onEncodeResult(byte[] data, int offset, int length, long timestamp, int type) {
                             // type = 1,h264 video stream
@@ -131,6 +131,9 @@ RecordParams params = new RecordParams();
                             Log.i(TAG,"videoPath = "+videoPath);
                         }
                     });  
+// of course,if you only want to getting h.264 and aac stream
+// you can do like this
+mCameraHelper.startPusher(listener);
 ```
 (4) setting camera's brightness and contrast.  
 ```java