Android 录制音视频的完整代码

打开camera

private void openCamera(int position) {
 
if (mCamera == null) {
 
mCamera = Camera.open(position);
 
int degree = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE ? 0 : 90;
 
mCamera.setDisplayOrientation(degree);
 
}
 
}

camera默认是横屏的，所以我们要使用竖屏录制要旋转90度

int degree = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE ? 0 : 90;
 
mCamera.setDisplayOrientation(degree);

camera预览

我们要选择一个与我们要显示的SurfaceView大小比例最接近的一个camera预览大小，这里要特别注意camera支持的宽高都是宽大于高。

所以就有了下面这段选择代码

private Size getBestCameraResolution(Camera.Parameters parameters, Size screenResolution) {
 
float tmp = 0f;
 
float mindiff = 100f;
 
Log.e("yuanVideo", "screen width=" + screenResolution.getWidth() + " height=" + screenResolution.getHeight());
 
float width_d_height;
 
if (screenResolution.getWidth() > screenResolution.getHeight()) {
 
width_d_height = (float) screenResolution.getWidth() / (float) screenResolution.getHeight();
 
} else {
 
width_d_height = (float) screenResolution.getHeight() / (float) screenResolution.getWidth();
 
}
 
Log.e("yuanVideo", "width_d_height=" + width_d_height);
 
Camera.Size best = null;
 
List<Camera.Size> supportedPreviewSizes = parameters.getSupportedPreviewSizes();
 
for (Camera.Size s : supportedPreviewSizes) {
 
tmp = Math.abs(((float) s.width / (float) s.height) - width_d_height);
 
Log.e("yuanVideo", "support width=" + s.width + " height=" + s.height + " ratio=" + tmp);
 
if (tmp < mindiff) {
 
mindiff = tmp;
 
best = s;
 
}
 
}
 
Log.e("yuanVideo", "best width=" + best.width + " height=" + best.height);
 
return new Size(best.width, best.height);
 
}

初始化MediaRecorder

private boolean prepareMediaRecorder() {
 
// 创建MediaPlayer对象
 
mCamera.unlock();
 
mRecorder = new MediaRecorder();
 
mRecorder.reset();
 
mRecorder.setCamera(mCamera);
 
// 设置从麦克风采集声音(或来自录像机的声音AudioSource.CAMCORDER)
 
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
 
// 设置从摄像头采集图像
 
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
 
Log.e("yuanProfile", "QUALITY_LOW=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_LOW));
 
Log.e("yuanProfile", "QUALITY_HIGH=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_HIGH));
 
Log.e("yuanProfile", "QUALITY_QCIF=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QCIF));
 
Log.e("yuanProfile", "QUALITY_480P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_480P));
 
Log.e("yuanProfile", "QUALITY_720P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_720P));
 
Log.e("yuanProfile", "QUALITY_1080P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_1080P));
 
Log.e("yuanProfile", "QUALITY_QVGA=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QVGA));
 
Log.e("yuanProfile", "QUALITY_2160P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_2160P));
 
Log.e("yuanProfile", "QUALITY_VGA=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_VGA));
 
Log.e("yuanProfile", "QUALITY_4KDCI=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_4KDCI));
 
Log.e("yuanProfile", "QUALITY_QHD=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QHD));
 
Log.e("yuanProfile", "QUALITY_2K=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_2K));
 
if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_720P)) {
 
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_720P));
 
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_480P)) {
 
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_1080P));
 
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_1080P)) {
 
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_480P));
 
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_LOW)) {
 
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));
 
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_HIGH)) {
 
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
 
} else {
 
return false;
 
}
 
// mTempList.add(mCurrentTempRecordData);
 
mRecorder.setOutputFile(mCurPath);
 
mRecorder.setPreviewDisplay(activtityVideoRecordBinding.sView.getHolder().getSurface()); // ①
 
int degree;
 
if(getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE){
 
int degree ;
 
if (cameraPosition == Camera.CameraInfo.CAMERA_FACING_FRONT) {
 
degree = 270;
 
} else {
 
degree = 90;
 
}
 
mRecorder.setOrientationHint(degree);
 
}
 
try {
 
mRecorder.prepare();
 
} catch (Exception e) {
 
e.printStackTrace();
 
return false;
 
}
 
return true;
 
}

这里也要设置视频的旋转参数

if(getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE){
 
int degree ;
 
if (cameraPosition == Camera.CameraInfo.CAMERA_FACING_FRONT) {
 
degree = 270;
 
} else {
 
degree = 90;
 
}
 
mRecorder.setOrientationHint(degree);
 
}

下面是完整的代码

package com.yuanxuzhen.ffmpeg;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Size;
import android.view.SurfaceHolder;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import com.yuanxuzhen.ffmpeg.databinding.ActivtityVideoRecordBinding;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class VideoRecordActivity extends Activity {
ActivtityVideoRecordBinding activtityVideoRecordBinding;
MediaRecorder mRecorder;
private boolean isRecording = false;
private int cameraPosition = Camera.CameraInfo.CAMERA_FACING_FRONT;//0代表前置摄像头，1代表后置摄像头
private Camera mCamera;
private Camera.Parameters mParameters;
private String mCurPath = null;
private VideoTempRecordData mCurrentTempRecordData = null;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
mCurPath = DirUtil.getCacheDir(this) + File.separator + "out.mp4";
activtityVideoRecordBinding = ActivtityVideoRecordBinding.inflate(getLayoutInflater());
setContentView(activtityVideoRecordBinding.getRoot());
activtityVideoRecordBinding.sView.getHolder().setKeepScreenOn(true);
activtityVideoRecordBinding.sView.getHolder().addCallback(new SurfaceHolder.Callback() {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void surfaceCreated(@NonNull SurfaceHolder holder) {
openPreView();
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int format, int width, int height) {
Log.e("yuanVideo", "surfaceChanged width=" + width + " height=" + height);
}
@Override
public void surfaceDestroyed(@NonNull SurfaceHolder holder) {
}
});
activtityVideoRecordBinding.recordOrStop.setText("开始");
activtityVideoRecordBinding.recordOrStop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isRecording) {
Log.d("TAG", "停止录像");
stopRecord();
} else {
startRecord();
}
}
});
activtityVideoRecordBinding.change.setOnClickListener(new View.OnClickListener() {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onClick(View v) {
if(isRecording){
return;
}
releaseCamera();
cameraPosition = cameraPosition == Camera.CameraInfo.CAMERA_FACING_FRONT ? Camera.CameraInfo.CAMERA_FACING_BACK : Camera.CameraInfo.CAMERA_FACING_FRONT;
openCamera(cameraPosition);
openPreView();
}
});
}
/**
* 1.打开相机
*/
private void openCamera(int position) {
if (mCamera == null) {
mCamera = Camera.open(position);
int degree = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE ? 0 : 90;
mCamera.setDisplayOrientation(degree);
}
}
/**
* initCameraAndSurfaceViewHolder初始化hoder后
* 2.设置预览功能
*/
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private void openPreView() {
try {
if (mCamera != null) {
mParameters = mCamera.getParameters();
mCamera.setPreviewDisplay(activtityVideoRecordBinding.sView.getHolder());
Size screenPoint = getScreenMetrics(VideoRecordActivity.this);
Size bestPreviewSize = getBestCameraResolution(mCamera.getParameters(), screenPoint);
mParameters.setPreviewSize(bestPreviewSize.getWidth(), bestPreviewSize.getHeight());
mCamera.setParameters(mParameters);
mCamera.startPreview();
mCamera.autoFocus(new Camera.AutoFocusCallback() {
@Override
public void onAutoFocus(boolean success, Camera camera) {
Log.e("yuanVideo", "autoFocus success=" + success);
}
});
mCamera.setPreviewCallback(new Camera.PreviewCallback() {
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
Log.i("TAG", "获取预览帧...");
Log.d("TAG", "预览帧大小：" + String.valueOf(data.length));
}
});
}
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean prepareMediaRecorder() {
// 创建MediaPlayer对象
mCamera.unlock();
mRecorder = new MediaRecorder();
mRecorder.reset();
mRecorder.setCamera(mCamera);
// 设置从麦克风采集声音(或来自录像机的声音AudioSource.CAMCORDER)
mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
// 设置从摄像头采集图像
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
Log.e("yuanProfile", "QUALITY_LOW=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_LOW));
Log.e("yuanProfile", "QUALITY_HIGH=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_HIGH));
Log.e("yuanProfile", "QUALITY_QCIF=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QCIF));
Log.e("yuanProfile", "QUALITY_480P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_480P));
Log.e("yuanProfile", "QUALITY_720P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_720P));
Log.e("yuanProfile", "QUALITY_1080P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_1080P));
Log.e("yuanProfile", "QUALITY_QVGA=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QVGA));
Log.e("yuanProfile", "QUALITY_2160P=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_2160P));
Log.e("yuanProfile", "QUALITY_VGA=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_VGA));
Log.e("yuanProfile", "QUALITY_4KDCI=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_4KDCI));
Log.e("yuanProfile", "QUALITY_QHD=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_QHD));
Log.e("yuanProfile", "QUALITY_2K=" + CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_2K));
if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_720P)) {
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_720P));
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_480P)) {
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_1080P));
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_1080P)) {
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_480P));
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_LOW)) {
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_HIGH)) {
mRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
} else {
return false;
}
//        mTempList.add(mCurrentTempRecordData);
mRecorder.setOutputFile(mCurPath);
mRecorder.setPreviewDisplay(activtityVideoRecordBinding.sView.getHolder().getSurface()); // ①
if(getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE){
int degree ;
if (cameraPosition == Camera.CameraInfo.CAMERA_FACING_FRONT) {
degree = 270;
} else {
degree = 90;
}
mRecorder.setOrientationHint(degree);
}
try {
mRecorder.prepare();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
private void startRecord() {
if (prepareMediaRecorder()) {
mRecorder.start();
isRecording = true;
activtityVideoRecordBinding.recordOrStop.setText("停止");
} else {
releaseMediaRecorder();
isRecording = false;
activtityVideoRecordBinding.recordOrStop.setText("开始");
}
}
private void stopRecord() {
if (mRecorder == null) {
return;
}
mRecorder.stop();
releaseMediaRecorder();
isRecording = false;
activtityVideoRecordBinding.recordOrStop.setText("开始");
}
@Nullable
@Override
public CharSequence onCreateDescription() {
return super.onCreateDescription();
}
@Override
protected void onDestroy() {
releaseCamera();
releaseMediaRecorder();
super.onDestroy();
}
/**
* 释放相机资源
*/
private void releaseCamera() {
if (mCamera != null) {
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}
}
private void releaseMediaRecorder() {
if (mRecorder != null) {
mRecorder.reset();
mRecorder.release();
mRecorder = null;
mCamera.lock();
}
}
@Override
protected void onResume() {
super.onResume();
openCamera(cameraPosition);
}
@Override
protected void onPause() {
super.onPause();
releaseMediaRecorder();
releaseCamera();
}
/**
* 获取最佳预览大小
*
* @param parameters       相机参数
* @param screenResolution 屏幕宽高
* @return
*/
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
private Size getBestCameraResolution(Camera.Parameters parameters, Size screenResolution) {
float tmp = 0f;
float mindiff = 100f;
Log.e("yuanVideo", "screen width=" + screenResolution.getWidth() + " height=" + screenResolution.getHeight());
float width_d_height;
if (screenResolution.getWidth() > screenResolution.getHeight()) {
width_d_height = (float) screenResolution.getWidth() / (float) screenResolution.getHeight();
} else {
width_d_height = (float) screenResolution.getHeight() / (float) screenResolution.getWidth();
}
Log.e("yuanVideo", "width_d_height=" + width_d_height);
Camera.Size best = null;
List<Camera.Size> supportedPreviewSizes = parameters.getSupportedPreviewSizes();
for (Camera.Size s : supportedPreviewSizes) {
tmp = Math.abs(((float) s.width / (float) s.height) - width_d_height);
Log.e("yuanVideo", "support width=" + s.width + " height=" + s.height + " ratio=" + tmp);
if (tmp < mindiff) {
mindiff = tmp;
best = s;
}
}
Log.e("yuanVideo", "best width=" + best.width + " height=" + best.height);
return new Size(best.width, best.height);
}
/**
* 获取屏幕宽度和高度，单位为px
*
* @param context
* @return
*/
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static Size getScreenMetrics(Context context) {
DisplayMetrics dm = context.getResources().getDisplayMetrics();
int w_screen = dm.widthPixels;
int h_screen = dm.heightPixels;
return new Size(w_screen, h_screen);
}
}

布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- 显示视频预览的SurfaceView -->
<com.yuanxuzhen.ffmpeg.ResizeAbleSurfaceView
android:id="@+id/sView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
>
<TextView
android:id="@+id/tv_time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0秒"
android:layout_centerInParent="true"
android:textColor="@color/white"
/>
<Button
android:id="@+id/change"
android:layout_width="wrap_content"
android:layout_height="66dp"
android:text="切换摄像头"
android:layout_alignParentEnd="true"
/>
</RelativeLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true">
<Button
android:id="@+id/record_or_stop"
android:layout_width="66dp"
android:layout_height="66dp"
android:text="录制"
/>
<Button
android:id="@+id/save"
android:layout_width="66dp"
android:layout_height="66dp"
android:text="保存"
/>
</LinearLayout>
</RelativeLayout>

package com.yuanxuzhen.ffmpeg;
import android.content.Context;
import android.util.AttributeSet;
import android.view.SurfaceView;
public class ResizeAbleSurfaceView extends SurfaceView {
private int mWidth = -1;
private int mHeight = -1;
public ResizeAbleSurfaceView(Context context) {
super(context);
}
public ResizeAbleSurfaceView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ResizeAbleSurfaceView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (-1 == mWidth || -1 == mHeight) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
else {
setMeasuredDimension(mWidth, mHeight);
}
}
public void resize(int width, int height) {
mWidth = width;
mHeight = height;
getHolder().setFixedSize(width, height);
requestLayout();
invalidate();
}
}

package com.yuanxuzhen.ffmpeg;
import android.content.Context;
import android.os.Environment;
import java.io.File;
public class DirUtil {
public static final String WEBVIEW_CACHE = ".webviewCache";
public static final String IMAGE_PATH = "image";
public static final String DOWNLOAD_PATH = "download";
public static final String VIDEO_PATH = ".video";
public static final String NET_PATH = ".net";
//image
public static String getImageDir(Context context) {
return getCacheDir(context) + File.separator + IMAGE_PATH;
}
//webview
public static String getWebviewCache(Context context) {
return getCacheDir(context) + File.separator + WEBVIEW_CACHE;
}
//download
public static String getDownloadDir(Context context) {
return getCacheDir(context) + File.separator + DOWNLOAD_PATH;
}
//video
public static String getVideoPath(Context context) {
return getCacheDir(context) + File.separator + VIDEO_PATH;
}
//net
public static String getNetPath(Context context) {
return getCacheDir(context) + File.separator + NET_PATH;
}
public static String getCacheDir(Context context) {
if (context == null) {
return "";
}
String path = null;
if (context.getExternalCacheDir() != null
&& (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
|| !Environment.isExternalStorageRemovable())) {
//外部存储可用
path = context.getExternalCacheDir().getPath();
} else {
//内部存储不可用
path = context.getCacheDir().getPath();
}
return path;
}
}

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