问题点描述
Android录制mp4(h264+acc)视频,当设备异常断电时,导致apk没法正常关闭录制;
问题点分析
经度娘分析,没能正常关闭录制的视频文件缺少少moov box,导致视频没法正常播放;
解决方案
经验证度娘给出的方案,发现都不满足需求或者不太好操作。最后跟同事讨论了一下决定更换录制的视频格式,直接换成TS文件。再次经度娘验证逻辑没用问题后,上代码。
package com.example.demo;
import android.graphics.ImageFormat;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.hardware.camera2.CameraAccessException;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Environment;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Surface;
import androidx.appcompat.app.AppCompatActivity;
import com.zlmediakit.jni.ZLMediaKit;
import java.io.File;
import java.io.IOException;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
private MediaRecorder mediaRecorder;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initMediaRecorder();
}
private void initMediaRecorder() {
//new SurfaceTexture
Camera mCamera = Camera.open(0);
Camera.Parameters params = mCamera.getParameters();
params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
mCamera.setParameters(params);
SurfaceTexture surfaceTexture = new SurfaceTexture(0);
try {
mCamera.setPreviewTexture(surfaceTexture);
} catch (IOException e) {
throw new RuntimeException(e);
}
mCamera.startPreview();
mCamera.unlock();
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(mCamera);
mediaRecorder.reset();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置麦克风获取声音
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 设置摄像头获取图像
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_2_TS); // 设置 ts 格式
mediaRecorder.setVideoSize(1920, 1080);
mediaRecorder.setVideoEncodingBitRate(2*1024*1024);// 2M 码率
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
File f = new File(MainActivity.this.getExternalFilesDir(null).getAbsolutePath() + "/video");
if (!f.exists()) f.mkdirs();
String p = f.getAbsolutePath() + "/" + System.currentTimeMillis() + ".ts";
Log.e(TAG, "initMediaRecorder 录制路径: " + p);
mediaRecorder.setOutputFile(p); // 设置视频输出路径
mediaRecorder.setPreviewDisplay(new Surface(surfaceTexture)); // 设置使用SurfaceView预览视频
mediaRecorder.setOrientationHint(90); // 调整播放视频角度
try {
mediaRecorder.prepare(); // 准备录像
} catch (Exception e) {
e.printStackTrace();
Log.e("WillWolf", "mediaRecorder-->录制异常:" + e.toString());
}
mediaRecorder.start();
handler.sendEmptyMessageDelayed(1, 10 * 1000);
}
private Handler handler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
if (msg.what == 1) {
mediaRecorder.stop();
mediaRecorder.reset();
mediaRecorder.release();
mediaRecorder = null;
initMediaRecorder();
}
return false;
}
});
}
注意一:要有摄像头、音频、读写文件权限(读文件可以不要)
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.CAMERA" />
注意二:这里不能直接使用setMaxDuration进行视频分段录制,具体原因看官方介绍,可以按我上面贴的代码来实现,不过这个方案不太完美,有丢帧。针对这个问题问了以下度娘,有解决方案,具体可以参见:大佬的博客