Android开发之视频录制与播放
###前言
公司产品有很多地方都需要上传音频视频，今天抽空总结一下音频视频的录制。学习的主角是MediaRecorder类。
###MediaRecorder类介绍：
MediaRecorder类是Android sdk提供的一个专门用于音视频录制，一般利用手机麦克风采集音频，摄像头采集图片信息。
###MediaRecorder主要函数：
setAudioChannels(int numChannels) 设置录制的音频通道数
setAudioEncoder(int audio_encoder) 设置audio的编码格式
setAudioEncodingBitRate(int bitRate) 设置录制的音频编码比特率
setAudioSamplingRate(int samplingRate) 设置录制的音频采样率
setAudioSource(int audio_source) 设置用于录制的音源
setAuxiliaryOutputFile(String path) 辅助时间的推移视频文件的路径传递
setAuxiliaryOutputFile(FileDescriptor fd)在文件描述符传递的辅助时间的推移视频
setCamera(Camera c) 设置一个recording的摄像头
setCaptureRate(double fps) 设置视频帧的捕获率
setMaxDuration(int max_duration_ms) 设置记录会话的最大持续时间（毫秒）
setMaxFileSize(long max_filesize_bytes) 设置记录会话的最大大小（以字节为单位）
setOutputFile(FileDescriptor fd) 传递要写入的文件的文件描述符
setOutputFile(String path) 设置输出文件的路径
setOutputFormat(int output_format) 设置在录制过程中产生的输出文件的格式
setPreviewDisplay(Surface sv) 表面设置显示记录媒体（视频）的预览
setVideoEncoder(int video_encoder) 设置视频编码器，用于录制
setVideoEncodingBitRate(int bitRate) 设置录制的视频编码比特率
setVideoFrameRate(int rate) 设置要捕获的视频帧速率
setVideoSize(int width, int height) 设置要捕获的视频的宽度和高度
setVideoSource(int video_source) 开始捕捉和编码数据到setOutputFile（指定的文件）
setLocation(float latitude, float longitude) 设置并存储在输出文件中的地理数据（经度和纬度）
setProfile(CamcorderProfile profile) 指定CamcorderProfile对象
setOrientationHint(int degrees)设置输出的视频播放的方向提示
setOnErrorListener(MediaRecorder.OnErrorListener l)注册一个用于记录录制时出现的错误的监听器
setOnInfoListener(MediaRecorder.OnInfoListener listener)注册一个用于记录录制时出现的信息事件
getMaxAmplitude() 获取在前一次调用此方法之后录音中出现的最大振幅
prepare()准备录制。
release()释放资源
reset()将MediaRecorder设为空闲状态
start()开始录制
stop()停止录制
###MediaRecorder主要配置参数：
1.）视频编码格式MediaRecorder.VideoEncoder
default，H263，H264，MPEG_4_SP，VP8
2.）音频编码格式MediaRecorder.AudioEncoder
default，AAC，HE_AAC，AAC_ELD，AMR_NB，AMR_WB，VORBIS
3.）视频资源获取方式MediaRecorder.VideoSource
default，CAMERA，SURFACE
4.）音频资源获取方式MediaRecorder.AudioSource
defalut，camcorder，mic，voice_call，voice_communication,voice_downlink,voice_recognition, voice_uplink
5.）资源输出格式MediaRecorder.OutputFormat
amr_nb，amr_wb,default,mpeg_4,raw_amr,three_gpp，aac_adif， aac_adts， output_format_rtp_avp， output_format_mpeg2ts ，webm
###MediaRecorder录制视频简单实现：
1）.在清单文件中添加权限
2）.在 app 文件夹中 build.gradle 添加
compile 'com.github.Othershe:NiceDialog:1.1.1'
compile 'cn.jzvd:jiaozivideoplayer:6.0.1'
3）.布局文件
activity_main.xml
dialog 显示的布局
视频播放界面
4）.实现录制视频
package com.gyq.recordvideotest;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Chronometer;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.gyq.recordvideotest.utils.SPUtils;
import com.othershe.nicedialog.BaseNiceDialog;
import com.othershe.nicedialog.NiceDialog;
import com.othershe.nicedialog.ViewConvertListener;
import com.othershe.nicedialog.ViewHolder;
import java.io.File;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private LinearLayout mRecord;
private SurfaceView mSurfaceView;
private SurfaceHolder mSurfaceHolder;
private ImageButton mStartStop;
private boolean isRecording = false;//标记是否已经在录制
private MediaRecorder mRecorder;//音视频录制类
private Camera mCamera = null;//相机
private Camera.Size mSize = null;//相机的尺寸
private int mCameraFacing = Camera.CameraInfo.CAMERA_FACING_BACK;//默认后置摄像头
private Chronometer mTimer;
private SPUtils mSp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSp = new SPUtils("VIDEO",this);
mRecord = (LinearLayout)findViewById(R.id.ll_click_record);
mRecord.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
NiceDialog.init()
.setLayoutId(R.layout.video_record_layout)
.setConvertListener(new ViewConvertListener() {
@Override
public void convertView(final ViewHolder holder, final BaseNiceDialog dialog) {
mSurfaceView = (SurfaceView) holder.getConvertView().findViewById(R.id.surface_view);
mStartStop = (ImageButton) holder.getConvertView().findViewById(R.id.ib_play);
mSurfaceView.setZOrderOnTop(true);
mSurfaceView.setZOrderMediaOverlay(true);
mTimer = (Chronometer) holder.getConvertView().findViewById(R.id.timer);
holder.setOnClickListener(R.id.ib_play, new View.OnClickListener() {
@Override
public void onClick(View v) {
//dialog.dismiss();
if (!isRecording) {
startRecord();
} else {
stopRecord();
Toast.makeText(MainActivity.this,"视频已保存", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
}
});
final SurfaceHolder holder2 = mSurfaceView.getHolder();// 取得holder
holder2.setFormat(PixelFormat.TRANSPARENT);
holder2.setFixedSize(1280,720);
holder2.setKeepScreenOn(true);
holder2.addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
// 将holder，这个holder为开始在onCreate里面取得的holder，将它赋给mSurfaceHolder
mSurfaceHolder = holder2;
if (mCamera == null) {
return;
}
try {
//设置显示
mCamera.setPreviewDisplay(holder2);
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
releaseCamera();
finish();
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
// 将holder，这个holder为开始在onCreate里面取得的holder，将它赋给mSurfaceHolder
mSurfaceHolder = holder2;
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
// surfaceDestroyed的时候同时对象设置为null
if (isRecording && mCamera != null) {
mCamera.lock();
}
mSurfaceView = null;
mSurfaceHolder = null;
releaseMediaRecorder();
releaseCamera();
}
}); // holder加入回调接口
}
})
.setWidth(800)
.setHeight(500)
.setOutCancel(false)
.show(getSupportFragmentManager());
}
});
}
/**
* 初始化相机
*/
private void initCamera() {
if (Camera.getNumberOfCameras() == 2) {
mCamera = Camera.open(mCameraFacing);
} else {
mCamera = Camera.open();
}
CameraSizeComparator sizeComparator = new CameraSizeComparator();
Camera.Parameters parameters = mCamera.getParameters();
if (mSize == null) {
List vSizeList = parameters.getSupportedPreviewSizes();
Collections.sort(vSizeList, sizeComparator);
for (int num = 0; num < vSizeList.size(); num++) {
Camera.Size size = vSizeList.get(num);
if (size.width >= 800 && size.height >= 480) {
this.mSize = size;
break;
}
}
mSize = vSizeList.get(0);
List focusModesList = parameters.getSupportedFocusModes();
//增加对聚焦模式的判断
if (focusModesList.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
} else if (focusModesList.contains(Camera.Parameters.FOCUS_MODE_AUTO)) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
}
mCamera.setParameters(parameters);
}
int rotation = getWindowManager().getDefaultDisplay().getRotation();
}
@Override
protected void onResume() {
super.onResume();
initCamera();
}
@Override
public void onPause() {
releaseCamera();
super.onPause();
}
/**
* 停止录制
*/
private void stopRecord() {
try {
//停止录制
mRecorder.stop();
mTimer.stop();
//重置
mRecorder.reset();
mStartStop.setImageResource(R.drawable.icon_video_play);
} catch (Exception e) {
e.printStackTrace();
}
isRecording = false;
}
/**
* 释放MediaRecorder
*/
private void releaseMediaRecorder() {
if (mRecorder != null) {
mRecorder.release();
mRecorder = null;
}
}
/**
* 释放相机资源
*/
private void releaseCamera() {
try {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.unlock();
mCamera.release();
}
} catch (RuntimeException e) {
} finally {
mCamera = null;
}
}
/**
* 开始录制
*/
private void startRecord() {
mTimer.start();
if (mRecorder == null) {
mRecorder = new MediaRecorder(); // 创建MediaRecorder
}
if (mCamera != null) {
mCamera.stopPreview();
mCamera.unlock();
mRecorder.setCamera(mCamera);
}
try {
// 设置音频采集方式
mRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
//设置视频的采集方式
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//设置文件的输出格式
mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);//aac_adif， aac_adts， output_format_rtp_avp， output_format_mpeg2ts ，webm
//设置audio的编码格式
mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
//设置video的编码格式
mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
//设置录制的视频编码比特率
//mRecorder.setVideoEncodingBitRate(1024 * 1024);
mRecorder.setVideoSize(1280,720);
//设置录制的视频帧率,注意文档的说明:
mRecorder.setVideoFrameRate(20);
//设置要捕获的视频的宽度和高度
// mSurfaceHolder.setFixedSize(320, 240);//最高只能设置640x480
//mRecorder.setVideoSize(320, 240);//最高只能设置640x480
//设置记录会话的最大持续时间（毫秒）
//mRecorder.setMaxDuration(60 * 1000);
mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
String path = getExternalCacheDir().getPath();
if (path != null) {
File dir = new File(path + "/videos");
if (!dir.exists()) {
dir.mkdir();
}
path = dir + "/" + "SmartDoor_video"+System.currentTimeMillis() + ".mp4";
mSp.put("video_path",path);
//设置输出文件的路径
mRecorder.setOutputFile(path);
//准备录制
mRecorder.prepare();
//开始录制
mRecorder.start();
isRecording = true;
//btnStartStop.setText("停止");
mStartStop.setImageResource(R.drawable.icon_video_stop);
}
} catch (Exception e) {
e.printStackTrace();
}
}
private class CameraSizeComparator implements Comparator {
public int compare(Camera.Size lhs, Camera.Size rhs) {
if (lhs.width == rhs.width) {
return 0;
} else if (lhs.width > rhs.width) {
return 1;
} else {
return -1;
}
}
}
public void play(View view) {
Intent intent = new Intent(this,PlayerActivity.class);
startActivity(intent);
}
}
工具类 SPUtils.java
package com.gyq.recordvideotest.utils;
import android.content.Context;
import android.content.SharedPreferences;
import android.support.annotation.Nullable;
import java.util.Map;
import java.util.Set;
/**
* Created by gyq on 2017/7/27 14:18
*/
public class SPUtils {
private SharedPreferences sp;
private SharedPreferences.Editor editor;
/**
* SPUtils构造函数
* 在Application中初始化
*
* @param spName spName
*/
public SPUtils(String spName, Context context) {
sp = context.getSharedPreferences(spName, Context.MODE_PRIVATE);
editor = sp.edit();
editor.apply();
}
/**
* SP中写入String类型value
*
* @param key 键
* @param value 值
*/
public void put(String key, @Nullable String value) {
editor.putString(key, value).apply();
}
/**
* SP中读取String
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值{@code null}
*/
public String getString(String key) {
return getString(key, null);
}
/**
* SP中读取String
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public String getString(String key, String defaultValue) {
return sp.getString(key, defaultValue);
}
/**
* SP中写入int类型value
*
* @param key 键
* @param value 值
*/
public void put(String key, int value) {
editor.putInt(key, value).apply();
}
/**
* SP中读取int
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值-1
*/
public int getInt(String key) {
return getInt(key, -1);
}
/**
* SP中读取int
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public int getInt(String key, int defaultValue) {
return sp.getInt(key, defaultValue);
}
/**
* SP中写入long类型value
*
* @param key 键
* @param value 值
*/
public void put(String key, long value) {
editor.putLong(key, value).apply();
}
/**
* SP中读取long
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值-1
*/
public long getLong(String key) {
return getLong(key, -1L);
}
/**
* SP中读取long
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public long getLong(String key, long defaultValue) {
return sp.getLong(key, defaultValue);
}
/**
* SP中写入float类型value
*
* @param key 键
* @param value 值
*/
public void put(String key, float value) {
editor.putFloat(key, value).apply();
}
/**
* SP中读取float
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值-1
*/
public float getFloat(String key) {
return getFloat(key, -1f);
}
/**
* SP中读取float
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public float getFloat(String key, float defaultValue) {
return sp.getFloat(key, defaultValue);
}
/**
* SP中写入boolean类型value
*
* @param key 键
* @param value 值
*/
public void put(String key, boolean value) {
editor.putBoolean(key, value).apply();
}
/**
* SP中读取boolean
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值{@code false}
*/
public boolean getBoolean(String key) {
return getBoolean(key, false);
}
/**
* SP中读取boolean
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public boolean getBoolean(String key, boolean defaultValue) {
return sp.getBoolean(key, defaultValue);
}
/**
* SP中写入String集合类型value
*
* @param key 键
* @param values 值
*/
public void put(String key, @Nullable Set values) {
editor.putStringSet(key, values).apply();
}
/**
* SP中读取StringSet
*
* @param key 键
* @return 存在返回对应值，不存在返回默认值{@code null}
*/
public Set getStringSet(String key) {
return getStringSet(key, null);
}
/**
* SP中读取StringSet
*
* @param key 键
* @param defaultValue 默认值
* @return 存在返回对应值，不存在返回默认值{@code defaultValue}
*/
public Set getStringSet(String key, @Nullable Set defaultValue) {
return sp.getStringSet(key, defaultValue);
}
/**
* SP中获取所有键值对
*
* @return Map对象
*/
public Map getAll() {
return sp.getAll();
}
/**
* SP中移除该key
*
* @param key 键
*/
public void remove(String key) {
editor.remove(key).apply();
}
/**
* SP中是否存在该key
*
* @param key 键
* @return {@code true}: 存在
{@code false}: 不存在
*/
public boolean contains(String key) {
return sp.contains(key);
}
/**
* SP中清除所有数据
*/
public void clear() {
editor.clear().apply();
}
}
5）.播放视频
package com.gyq.recordvideotest;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.gyq.recordvideotest.utils.SPUtils;
import cn.jzvd.JZUserAction;
import cn.jzvd.JZUserActionStandard;
import cn.jzvd.JZVideoPlayer;
import cn.jzvd.JZVideoPlayerStandard;
public class PlayerActivity extends AppCompatActivity {
private JZVideoPlayerStandard mplayer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
SPUtils msp = new SPUtils("VIDEO",this);
mplayer = (JZVideoPlayerStandard)findViewById(R.id.video_player);
mplayer.setUp(msp.getString("video_path"),JZVideoPlayerStandard.SCREEN_LAYOUT_NORMAL,"留言");
JZVideoPlayer.setJzUserAction(new MyUserActionStandard());
}
@Override
protected void onPause() {
super.onPause();
JZVideoPlayer.releaseAllVideos();
}
@Override
public void onBackPressed() {
if (JZVideoPlayer.backPress()) {
return;
}
super.onBackPressed();
}
class MyUserActionStandard implements JZUserActionStandard {
@Override
public void onEvent(int type, String url, int screen, Object... objects) {
switch (type) {
case JZUserAction.ON_CLICK_START_ICON:
Log.i("USER_EVENT", "ON_CLICK_START_ICON" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_CLICK_START_ERROR:
Log.i("USER_EVENT", "ON_CLICK_START_ERROR" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_CLICK_START_AUTO_COMPLETE:
Log.i("USER_EVENT", "ON_CLICK_START_AUTO_COMPLETE" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_CLICK_PAUSE:
Log.i("USER_EVENT", "ON_CLICK_PAUSE" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_CLICK_RESUME:
Log.i("USER_EVENT", "ON_CLICK_RESUME" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_SEEK_POSITION:
Log.i("USER_EVENT", "ON_SEEK_POSITION" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_AUTO_COMPLETE:
Log.i("USER_EVENT", "ON_AUTO_COMPLETE" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_ENTER_FULLSCREEN:
Log.i("USER_EVENT", "ON_ENTER_FULLSCREEN" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_QUIT_FULLSCREEN:
Log.i("USER_EVENT", "ON_QUIT_FULLSCREEN" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_ENTER_TINYSCREEN:
Log.i("USER_EVENT", "ON_ENTER_TINYSCREEN" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_QUIT_TINYSCREEN:
Log.i("USER_EVENT", "ON_QUIT_TINYSCREEN" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_TOUCH_SCREEN_SEEK_VOLUME:
Log.i("USER_EVENT", "ON_TOUCH_SCREEN_SEEK_VOLUME" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserAction.ON_TOUCH_SCREEN_SEEK_POSITION:
Log.i("USER_EVENT", "ON_TOUCH_SCREEN_SEEK_POSITION" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserActionStandard.ON_CLICK_START_THUMB:
Log.i("USER_EVENT", "ON_CLICK_START_THUMB" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
case JZUserActionStandard.ON_CLICK_BLANK:
Log.i("USER_EVENT", "ON_CLICK_BLANK" + " title is : " + (objects.length == 0 ? "" : objects[0]) + " url is : " + url + " screen is : " + screen);
break;
default:
Log.i("USER_EVENT", "unknow");
break;
}
}
}
}
介绍一个很好用的视频播放 JiaoZiVideoPlayer