MediaRecorder录制视频

MediaRecorder录制视频

权限设置

相机和录音权限

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

XML布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".RecordActivity">

    <SurfaceView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/my_surface"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/start"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            android:text="开始"/>

        <Button
            android:id="@+id/stoping"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="match_parent"
            android:text="停止"/>

    </LinearLayout>

</RelativeLayout>

Activity代码

package com.example.plusapplication;

import android.Manifest;
import android.media.MediaRecorder;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import java.io.File;
import java.io.IOException;

public class RecordActivity extends AppCompatActivity implements View.OnClickListener, SurfaceHolder.Callback {

    private Button start,stop;
    private SurfaceView surfaceView;
    private MediaRecorder mediaRecorder;
    private boolean isStart = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_record);
        // 设置横屏显示
	setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
	surfaceView = findViewById(R.id.surface_id);
	// 设置全屏
	getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
	// 选择支持半透明模式,在有surfaceview的activity中使用。
	getWindow().setFormat(PixelFormat.TRANSLUCENT);
	        surfaceView = findViewById(R.id.my_surface);
        start = findViewById(R.id.start);
        start.setOnClickListener(this);
        stop = findViewById(R.id.stoping);
        stop.setOnClickListener(this);

        SurfaceHolder holder = surfaceView.getHolder();
        holder.addCallback(this);

        if (Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){
            requestPermissions(new String[]{Manifest.permission.CAMERA,Manifest.permission.RECORD_AUDIO},100);
        }
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.start:
                try {
                    mediaRecorder.prepare();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                mediaRecorder.start();
                isStart = true;
                Toast.makeText(this, "开始录音", Toast.LENGTH_SHORT).show();
                break;
            case R.id.stop:
                if (isStart){
                    mediaRecorder.stop();
                    Toast.makeText(this, "结束录音", Toast.LENGTH_SHORT).show();
                    isStart = false;
                }
                break;
        }
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        File file = new File(Environment.getExternalStorageDirectory().getPath(),"aaa.mp4");
        if (!file.exists()){
            try {
                file.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        mediaRecorder = new MediaRecorder();
        /*
        MediaRecorder 媒体录制
        AudioSoure 音源
        VideoSource 视频来源
        AudioChannels声频通道
        OutputFormat 输出格式
        AudioEncoder 音频编码
        VideoEncoder 视频编码
         */
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        mediaRecorder.setAudioChannels(2);
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
        mediaRecorder.setPreviewDisplay(holder.getSurface());
        mediaRecorder.setOutputFile(file.getPath());
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

    }
}

功能方法

//重低音调节
BassBoost bassBoost = new BassBoost(0, 1);
bassBoost.setEnabled(true);
bassBoost.getRoundedStrength();
//自动增强控制器
AutomaticGainControl automaticGainControl;
//噪音消除器
NoiseSuppressor noiseSuppressor;
//回声消除器
AcousticEchoCanceler canceler;