Android视频录制功能的实现步骤
官方使用指南请查看Google音频和视频指南
视频录制基本步骤
1.申明权限
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<--如果录制的视频保存在外部SD卡，还需要添加以下权限->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
注意：RECORD_AUDIO为危险权限，从Android 6.0开始（API级别23）开始，需要动态获取。
2.视频录制参数配置
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.text.TextUtils;
/**
* @author Created by LRH
* @description 视频录制参数（参数可自行拓展）
* @date 2021/1/19 13:54
*/
public class VideoRecorderConfig {
//Camera
private Camera camera;
//摄像头预览宽度
private int videoWidth;
//摄像头预览高度
private int videoHeight;
//摄像头预览偏转角度
private int cameraRotation;
//保存的文件路径
private String path;
//由于Camera使用的是SurfaceTexture，所以这里使用了SurfaceTexture
//也可使用SurfaceHolder
private SurfaceTexture mSurfaceTexture;
private int cameraId = 0;
public SurfaceTexture getSurfaceTexture() {
return mSurfaceTexture;
}
public void setSurfaceTexture(SurfaceTexture surfaceTexture) {
mSurfaceTexture = surfaceTexture;
}
public Camera getCamera() {
return camera;
}
public void setCamera(Camera camera) {
this.camera = camera;
}
public int getVideoWidth() {
return videoWidth;
}
public void setVideoWidth(int videoWidth) {
this.videoWidth = videoWidth;
}
public int getVideoHeight() {
return videoHeight;
}
public void setVideoHeight(int videoHeight) {
this.videoHeight = videoHeight;
}
public int getCameraRotation() {
return cameraRotation;
}
public void setCameraRotation(int cameraRotation) {
this.cameraRotation = cameraRotation;
}
public String getPath() {
return path;
}
public void setPath(String path) {
this.path = path;
}
public int getCameraId() {
return cameraId;
}
public void setCameraId(int cameraId) {
this.cameraId = cameraId;
}
public boolean checkParam() {
return mSurfaceTexture != null && camera != null && videoWidth > 0 && videoHeight > 0 && !TextUtils.isEmpty(path);
}
}
3.视频录制接口封装（使用MediaRecorder）
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Build;
import android.view.Surface;
import com.emp.yjy.baselib.utils.LogUtils;
import java.io.IOException;
/**
* @author Created by LRH
* @description
* @date 2021/1/19 13:53
*/
public class VideoRecorder {
private static final String TAG = "VideoRecord";
private MediaRecorder mRecorder;
public VideoRecorder() {
}
/**
* 开始录制
*
* @param config
* @return
*/
public boolean startRecord(VideoRecorderConfig config, MediaRecorder.OnErrorListener listener) {
if (config == null || !config.checkParam()) {
LogUtils.e(TAG, "参数错误");
return false;
}
if (mRecorder == null) {
mRecorder = new MediaRecorder();
}
mRecorder.reset();
if (listener != null) {
mRecorder.setOnErrorListener(listener);
}
config.getCamera().unlock();
mRecorder.setCamera(config.getCamera());
//设置音频通道
// mRecorder.setAudioChannels(1);
//声音源
// AudioSource.DEFAULT:默认音频来源
// AudioSource.MIC:麦克风（常用）
// AudioSource.VOICE_UPLINK:电话上行
// AudioSource.VOICE_DOWNLINK:电话下行
// AudioSource.VOICE_CALL:电话、含上下行
// AudioSource.CAMCORDER:摄像头旁的麦克风
// AudioSource.VOICE_RECOGNITION:语音识别
// AudioSource.VOICE_COMMUNICATION:语音通信
mRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
//视频源
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
try {
//推荐使用以下代码进行参数配置
CamcorderProfile bestCamcorderProfile = getBestCamcorderProfile(config.getCameraId());
mRecorder.setProfile(bestCamcorderProfile);
} catch (Exception e) {
//设置输出格式
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//声音编码格式
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
//视频编码格式
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
}
//设置视频的长宽
mRecorder.setVideoSize(config.getVideoWidth(), config.getVideoHeight());
// 设置取样帧率
mRecorder.setVideoFrameRate(30);
// mRecorder.setAudioEncodingBitRate(44100);
// 设置比特率（比特率越高质量越高同样也越大）
mRecorder.setVideoEncodingBitRate(800 * 1024);
// 这里是调整旋转角度（前置和后置的角度不一样）
mRecorder.setOrientationHint(config.getCameraRotation());
// 设置记录会话的最大持续时间（毫秒）
mRecorder.setMaxDuration(15 * 1000);
//设置输出的文件路径
mRecorder.setOutputFile(config.getPath());
//设置预览对象（可以使用SurfaceHoler代替）
mRecorder.setPreviewDisplay(new Surface(config.getSurfaceTexture()));
//预处理
try {
mRecorder.prepare();
} catch (IOException e) {
e.printStackTrace();
return false;
}
//开始录制
mRecorder.start();
return true;
}
/**
* 停止录制
*/
public void stopRecord() {
if (mRecorder != null) {
try {
mRecorder.stop();
mRecorder.reset();
mRecorder.release();
mRecorder = null;
} catch (Exception e) {
e.printStackTrace();
LogUtils.e(TAG, e.getMessage());
}
}
}
/**
* 暂停录制
*
* @return
*/
public boolean pause() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && mRecorder != null) {
mRecorder.pause();
return true;
}
return false;
}
/**
* 继续录制
*
* @return
*/
public boolean resume() {
if (mRecorder != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
mRecorder.resume();
return true;
}
return false;
}
}
public CamcorderProfile getBestCamcorderProfile(int cameraID){
CamcorderProfile profile = CamcorderProfile.get(cameraID, CamcorderProfile.QUALITY_LOW);
if(CamcorderProfile.hasProfile(cameraID, CamcorderProfile.QUALITY_480P)){
//对比下面720 这个选择 每帧不是很清晰
profile = CamcorderProfile.get(cameraID, CamcorderProfile.QUALITY_480P);
profile.videoBitRate = profile.videoBitRate/5;
return profile;
}
if(CamcorderProfile.hasProfile(cameraID, CamcorderProfile.QUALITY_720P)){
//对比上面480 这个选择 动作大时马赛克!!
profile = CamcorderProfile.get(cameraID, CamcorderProfile.QUALITY_720P);
profile.videoBitRate = profile.videoBitRate/35;
return profile;
}
if(CamcorderProfile.hasProfile(cameraID, CamcorderProfile.QUALITY_CIF)){
profile = CamcorderProfile.get(cameraID, CamcorderProfile.QUALITY_CIF);
return profile;
}
if(CamcorderProfile.hasProfile(cameraID, CamcorderProfile.QUALITY_QVGA)){
profile = CamcorderProfile.get(cameraID, CamcorderProfile.QUALITY_QVGA);
return profile;
}
return profile;
}
3.使用示例
public void recordVideo(CustomCameraView CameraView) {
VideoRecorderConfig config = new VideoRecorderConfig();
String path = App.sGlobalContext.getExternalFilesDir("video").getAbsolutePath() + File.separator + "test1.mp4";
config.setCamera(CameraView.getCamera());
config.setCameraRotation(CameraView.getCameraRotation());
config.setVideoHeight(CameraView.getCameraSize().height);
config.setVideoWidth(CameraView.getCameraSize().width);
config.setPath(path);
config.setSurfaceTexture(CameraView.getSurfaceTexture());
config.setCameraId(0);
VideoRecorder record = new VideoRecorder();
boolean start = record.startRecord(config, null);
int duration = 15_000;
while (duration > 0) {
if (duration == 10_000) {
boolean pause = record.pause();
LogUtils.e(TAG, "暂停录制" + pause);
}
if (duration == 5_000) {
boolean resume = record.resume();
LogUtils.e(TAG, "重新开始录制" + resume);
}
SystemClock.sleep(1_000);
duration -= 1_000;
}
record.stopRecord();
LogUtils.d(TAG, "停止录制");
}
其中CustomCameraView为自己封装的相机库
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