Android m3u8网络视频播放

最近在做 m3u8网络视频播放，踩了不少坑，也试了不少的框架，特别记录一下其中用的比较多的三种

第一种：media:ijkplayer

media:ijkplayer 是由 bilbil 提供的开源的视频框架，但是由过之后感觉不太好用：

优点：
1、支持 Android 和 IOS
2、支持多种视频的硬解码

缺点：
1、加载时间过长；从开始加载到开始播放第一帧视频，中间最少需要十秒时间（一开始以为是自己的配置有问题，但在网上找了一下，但都没有找到好的解决方案）
2、不支持实时视频截图（由于项目的需要，需要关闭时，最后显示的视频截图，但看了一下源码，并没有找到提供相关源码）

如果有哪位大神解决的，麻烦给留个言！！！！！

media:ijkplayer 的github地址：https://github.com/bilibili/ijkplayer

集成方式：

// required, enough for most devices.implementation 'tv.danmaku.ijk.media:ijkplayer-java:0.8.8'implementation 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.8.8'// Other ABIs: optionalimplementation 'tv.danmaku.ijk.media:ijkplayer-armv5:0.8.8'implementation 'tv.danmaku.ijk.media:ijkplayer-arm64:0.8.8'implementation 'tv.danmaku.ijk.media:ijkplayer-x86:0.8.8'implementation 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.8.8'// ExoPlayer as IMediaPlayer: optional, experimentalimplementation 'tv.danmaku.ijk.media:ijkplayer-exo:0.8.8'

混淆配置：

-keep class tv.danmaku.ijk.media.player.** { *; }

使用：
1）：IjkVideoView

public class IjkVideoView extends FrameLayout {private Context mContext;//上下文private IMediaPlayer mMediaPlayer = null;//视频控制类private VideoPlayerListener mVideoPlayerListener;//自定义监听器private SurfaceView mSurfaceView;//播放视图private String mPath = "";//视频文件地址public IjkVideoView(@NonNull Context context) {super(context);initVideoView(context);}public IjkVideoView(@NonNull Context context, @Nullable AttributeSet attrs) {super(context, attrs);initVideoView(context);}public IjkVideoView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);initVideoView(context);}@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)public IjkVideoView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {super(context, attrs, defStyleAttr, defStyleRes);}public abstract static class VideoPlayerListener implements IMediaPlayer.OnPreparedListener,IMediaPlayer.OnCompletionListener,IMediaPlayer.OnErrorListener {}private void initVideoView(Context context) {mContext = context;setFocusable(true);}public void setPath(String path) {if (TextUtils.equals("", mPath)) {mPath = path;initSurfaceView();} else {mPath = path;loadVideo();}}private void initSurfaceView() {mSurfaceView = new SurfaceView(mContext);mSurfaceView.getHolder().addCallback(new LmnSurfaceCallback());LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, Gravity.CENTER);mSurfaceView.setLayoutParams(layoutParams);this.addView(mSurfaceView);}//surfaceView的监听器private class LmnSurfaceCallback implements SurfaceHolder.Callback {@Overridepublic void surfaceCreated(SurfaceHolder holder) {}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {loadVideo();}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {}}//加载视频private void loadVideo() {if (mMediaPlayer != null) {mMediaPlayer.stop();mMediaPlayer.release();}IjkMediaPlayer ijkMediaPlayer = new IjkMediaPlayer();mMediaPlayer = ijkMediaPlayer;if (mVideoPlayerListener != null) {mMediaPlayer.setOnPreparedListener(mVideoPlayerListener);mMediaPlayer.setOnErrorListener(mVideoPlayerListener);}try {mMediaPlayer.setDataSource(mPath);} catch (IOException e) {e.printStackTrace();}mMediaPlayer.setDisplay(mSurfaceView.getHolder());mMediaPlayer.prepareAsync();}public void setListener(VideoPlayerListener listener) {this.mVideoPlayerListener = listener;if (mMediaPlayer != null) {mMediaPlayer.setOnPreparedListener(listener);}}public boolean isPlaying() {if (mMediaPlayer != null) {return mMediaPlayer.isPlaying();}return false;}public void start() {if (mMediaPlayer != null) {mMediaPlayer.start();}}public void pause() {if (mMediaPlayer != null) {mMediaPlayer.pause();}}public void stop() {if (mMediaPlayer != null) {mMediaPlayer.stop();}}public void reset() {if (mMediaPlayer != null) {mMediaPlayer.reset();}}public void release() {if (mMediaPlayer != null) {mMediaPlayer.reset();mMediaPlayer.release();mMediaPlayer = null;}}
}

2）：布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:background="@color/color_000000"android:layout_height="match_parent"><LinearLayoutandroid:layout_width="match_parent"android:layout_centerInParent="true"android:layout_height="wrap_content"android:background="@color/color_000000"android:orientation="vertical"><com.tzyun.pip.view.IjkVideoViewandroid:id="@+id/jkVideoView"android:layout_width="match_parent"android:layout_height="300dp" /></LinearLayout><ImageViewandroid:id="@+id/back"android:layout_width="wrap_content"android:layout_height="48dp"android:contentDescription="@null"android:paddingStart="13dp"android:paddingEnd="13dp"android:src="@mipmap/back_video" /><ProgressBarandroid:id="@+id/progressBar"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true" /></RelativeLayout>

3）：Activity

public class IjkPlayerVideoActivity extends Activity {private AlertDialog alertDialog;private String path;private IjkVideoView ijkVideoView;@Overridepublic void onCreate(Bundle icicle) {super.onCreate(icicle);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);path = getIntent().getStringExtra("ADDRESS");setContentView(R.layout.ijkplayervideo_layout);findViewById(R.id.back).setOnClickListener(v -> onBackPressed());AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("播放错误");builder.setNegativeButton("重试", (dialogInterface, i) -> setLiveParam());builder.setPositiveButton("退出", (dialogInterface, i) -> finish());alertDialog = builder.create();alertDialog.setCancelable(false);alertDialog.setCanceledOnTouchOutside(false);setLiveParam();}private void setLiveParam() {findViewById(R.id.progressBar).setVisibility(View.VISIBLE);IjkMediaPlayer.loadLibrariesOnce(null);IjkMediaPlayer.native_profileBegin("libijkplayer.so");//监听ijkVideoView=findViewById(R.id.jkVideoView);ijkVideoView.setListener(new IjkVideoView.VideoPlayerListener() {@Overridepublic void onPrepared(IMediaPlayer mp) {//播放成功处理mp.start();findViewById(R.id.progressBar).setVisibility(View.INVISIBLE);}@Overridepublic void onCompletion(IMediaPlayer iMediaPlayer) {}@Overridepublic boolean onError(IMediaPlayer mp, int what, int extra) {ToastUtils.showToast("播放失败");finish();return true;}});//        path = "你自己的播放地址";//路径ijkVideoView.setPath(path);ijkVideoView.start();}@Overridepublic void onConfigurationChanged(@NonNull Configuration newConfig) {super.onConfigurationChanged(newConfig);LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) ijkVideoView.getLayoutParams();//横屏if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {params.height = RelativeLayout.LayoutParams.MATCH_PARENT;} else {//竖屏params.height = (int) UnitUtils.dp2px(this, 300);}ijkVideoView.setLayoutParams(params);}@Overrideprotected void onDestroy() {IjkMediaPlayer.native_profileEnd();if (alertDialog != null && alertDialog.isShowing()) {alertDialog.dismiss();}ijkVideoView.stop();super.onDestroy();}@Overrideprotected void onResume() {super.onResume();findViewById(R.id.progressBar).setVisibility(View.VISIBLE);if (!ijkVideoView.isPlaying()) {ijkVideoView.start();}}@Overrideprotected void onPause() {super.onPause();ijkVideoView.pause();}
}

第二种：Vitamio

Vitamio是适用于Android和iOS的开放式多媒体框架，具有完整，真实的硬件加速解码器和渲染器。

新的功能：

支持大多数FFmpeg AVOptions，从而启用自定义HTTP标头支持。
支持更多的硬件，例如X86或MIPS。
改善流媒体，特别是支持自适应比特率流媒体，需要手动打开。
包含OpenSSL，因此支持某些与SSL相关的协议，例如https，tls，rtmps，rtmpts。
播放速度控制从0.5倍到2.0倍。
改进的字幕支持，包括外部位图字幕。
在线视频缓存到本地存储中，并且可以重复使用，直到删除缓存文件为止。
更多MediaPlayer API，例如getMetadata，getVideoTrack。
完整的Java代码对所有开发人员开放，欢迎修改和贡献。
10.支持RGBA_8888渲染，支持将RGB_565或RGBA_8888切换到视频渲染。

Vitamio 感觉是强大的，播放速度也很快，也可以截图，但在使用过程也遇到了问题：
根据文档的提示，Vitamio 是可以支持 https 的，但使用的结果是 https 无法播放，所以放弃了使用，也不知道是不是因为安全证书出了问题，还有一个问题就是，Vitamio 最早是更新于七年前，很多方法已经过时了，不知道还有没有人在维护。

Vitamio gitHub地址：https://github.com/yixia/VitamioBundleStudio

使用：
1）、解压文件,将其中的vitamio导入到as中

其中的vitamio-sample是官方提供的demo,而我们要导入as的是vitamio.

2）、打开AS,File -> New -> Import Moudle,选择刚才解压文件夹下的 vitamio 文件.
导入后的文件目录中会多出vitamin文件夹,如下图

3）、在 dependencies 中添加 compile project(’:vitamio’) 如果你导入module中更改过名字的话要改成修改后的名字如图：

混淆配置：

# For Vitamio classes
-keep class io.vov.utils.** { *; }
-keep class io.vov.vitamio.** { *; }

4）、打开app/src/main目录下的AndroidManifest.xml,注册io.vov.vitamio.activity.InitActivity

<activityandroid:name="io.vov.vitamio.activity.InitActivity"android:configChanges="orientation|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"android:launchMode="singleTop"android:theme="@android:style/Theme.NoTitleBar"android:windowSoftInputMode="stateAlwaysHidden" />

注意:这个InitActivity存在于vitamio/src/对应的目录下,不需要用户编写.

添加权限：

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

至此,vitamio导入完毕.

5）、VideoView控件的使用

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><io.vov.vitamio.widget.CenterLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:background="@color/color_000000"android:orientation="vertical"><io.vov.vitamio.widget.VideoViewandroid:id="@+id/buffer"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center" /></io.vov.vitamio.widget.CenterLayout><ImageViewandroid:id="@+id/back"android:layout_width="wrap_content"android:layout_height="48dp"android:contentDescription="@null"android:paddingStart="13dp"android:paddingEnd="13dp"android:src="@mipmap/back_video" /><ProgressBarandroid:id="@+id/progressBar"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true" /></RelativeLayout>

public class VideoActivity extends Activity implements MediaPlayer.OnInfoListener {private VideoView mVideoView;private AlertDialog alertDialog;private int errorCount;private int requestCode;private String shotsName;private String path;private MediaPlayer mediaPlayer;@Overridepublic void onCreate(Bundle icicle) {super.onCreate(icicle);Vitamio.isInitialized(this);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.vitamio_layout);mVideoView = findViewById(R.id.buffer);findViewById(R.id.back).setOnClickListener(v -> onBackPressed());AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("播放错误");builder.setNegativeButton("重试", (dialogInterface, i) -> {setLiveParam();mVideoView.resume();});builder.setPositiveButton("退出", (dialogInterface, i) -> finish());alertDialog = builder.create();alertDialog.setCancelable(false);alertDialog.setCanceledOnTouchOutside(false);setLiveParam();}private void setLiveParam() {errorCount = 0;findViewById(R.id.progressBar).setVisibility(View.VISIBLE);Intent intent = getIntent();path = intent.getStringExtra("ADDRESS");requestCode = intent.getIntExtra("requestCode", 200);shotsName = intent.getStringExtra("shotsName");Uri uri = Uri.parse(path);mVideoView.setVideoURI(uri);mVideoView.setBufferSize(1024);mVideoView.setHardwareDecoder(true);mVideoView.requestFocus();mVideoView.setOnInfoListener(this);mVideoView.setOnPreparedListener(mediaPlayer -> {// optional need Vitamio 4.0mediaPlayer.setPlaybackSpeed(1.0f);});mVideoView.setOnErrorListener((mediaPlayer, i, i1) -> {errorCount++;if (errorCount > 3) {String errMsg = "MEDIA_ERROR_UNKNOWN";switch (i) {case MediaPlayer.MEDIA_ERROR_UNKNOWN:errMsg = "MEDIA_ERROR_UNKNOWN";break;case MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK:errMsg = "MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK";break;case MediaPlayer.MEDIA_ERROR_IO:errMsg = "MEDIA_ERROR_IO";break;case MediaPlayer.MEDIA_ERROR_MALFORMED:errMsg = "MEDIA_ERROR_MALFORMED";break;case MediaPlayer.MEDIA_ERROR_UNSUPPORTED:errMsg = "MEDIA_ERROR_UNSUPPORTED";break;case MediaPlayer.MEDIA_ERROR_TIMED_OUT:errMsg = "MEDIA_ERROR_TIMED_OUT";break;}alertDialog.setTitle("播放错误:" + errMsg);alertDialog.show();} else {new Handler().postDelayed(this::setLiveParam, 1000);}return true;});}@Overrideprotected void onDestroy() {if (alertDialog != null && alertDialog.isShowing())alertDialog.dismiss();super.onDestroy();}@Overrideprotected void onResume() {super.onResume();findViewById(R.id.progressBar).setVisibility(View.VISIBLE);}@Overridepublic boolean onInfo(MediaPlayer mp, int what, int extra) {mediaPlayer = mp;switch (what) {case MediaPlayer.MEDIA_INFO_BUFFERING_START:if (mVideoView.isPlaying()) {mVideoView.pause();}findViewById(R.id.progressBar).setVisibility(View.VISIBLE);break;case MediaPlayer.MEDIA_INFO_BUFFERING_END:mVideoView.start();findViewById(R.id.progressBar).setVisibility(View.INVISIBLE);break;case MediaPlayer.MEDIA_INFO_DOWNLOAD_RATE_CHANGED:LogUtils.Log(getClass().getSimpleName(), "vitamio download rate" + extra + "kb/s");break;}return true;}// 捕获返回键的方法2@Overridepublic void onBackPressed() {if (requestCode == 200) {super.onBackPressed();} else {viewShot();}}/*** view截图** @return*/public void viewShot() {if (mediaPlayer != null) {// 核心代码startBitmap bitmap = mediaPlayer.getCurrentFrame();String savePath;if (bitmap != null) {String path = getExternalFilesDir(null).toString() + "/monitoringScreenshots/";File file = new File(path);if (!file.exists()) {file.mkdirs();}try {path = path + shotsName + ".png";File file2 = new File(path);if (file2.exists()) {file2.delete();}savePath = BitmapUtils.saveBitmapToFileWithFilePathWithOriginParams(path, bitmap).toString();setResult(savePath);} catch (IOException e) {e.printStackTrace();setResult("");}} else {setResult("");}} else {setResult("");}}/*** savePath 截图保存地址** @param savePath*/private void setResult(String savePath) {Intent intent = new Intent();intent.putExtra("screenshotPath", savePath);setResult(RESULT_OK, intent);finish();}
}

VideoView常用函数

/*** 获取扫描视频的Uri。* 参数layout(缩放参数)参见MediaPlayer的常量：VIDEO_LAYOUT_ORIGIN(原始大小)、VIDEO_LAYOUT_SCALE(画面全屏)、VIDEO_LAYOUT_STRETCH(画面拉伸)、VIDEO_LAYOUT_ZOOM(画面裁剪)、VIDEO_LAYOUT_FIT_PARENT(画面铺满)* 参数aspectRation(宽高比)，为0将自动检测*/
public void setVideoLayout(int layout,float aspectRatio);
//Surface是否有效。 参见Surface的isValid方法。
public boolean isValid();
//设置视频路径。
public void setVideoPath(String path);
//设置视频URI。（可以是网络视频地址）
public void setVideoURI(Uri uri);
//停止视频播放，并释放资源。
public void stopPlayback();
/*** 设置媒体控制器。* 参数controller:媒体控制器，注意是io.vov.vitamio.widget.MediaController。*/
public void setMediaController(MediaController controller);
//注册一个回调函数，在视频预处理完成后调用。在视频预处理完成后被调用。此时视频的宽度、高度、宽高比信息已经获取到，此时可调用seekTo让视频从指定位置开始播放。
public void setOnPreparedListener(OnPreparedListener l);
//获取当前播放位置。
public long getCurrentPosition();
//设置播放位置。单位毫秒
public void seekTo(long msec);
//是否正在播放。
public boolean isPlaying();
//获取缓冲百分比。
public int getBufferPercentage();
/*** 设置视频质量。* 参数quality参见MediaPlayer的常量：VIDEOQUALITY_LOW（流畅）、VIDEOQUALITY_MEDIUM（普通）、VIDEOQUALITY_HIGH（高质）*/
public void setVideoQuality(int quality);
//设置视频缓冲大小。默认1024KB，单位byte
public void setBufferSize(int bufSize);
//检测是否缓冲完毕。
public boolean isBuffering();
//设置元数据编码。例如：UTF-8
public void setMetaEncoding(String encoding);

第三种：ExoPlayer

ExoPlayer是构建在Android低水平媒体API之上的一个应用层媒体播放器。和Android内置的媒体播放器相比，ExoPlayer有许多优点。ExoPlayer支持内置的媒体播放器支持的所有格式外加自适应格式DASH和SmoothStreaming。ExoPlayer可以被高度定制和扩展以适应不同的使用场景。

优点：

支持HTTP上的动态自适应流DASH和SmoothStreaming。更多详情请参看 Supported formats。
支持高级的HLS特点,例如正确的处理#EXT-X-DISCONTINUITY标签。
能够无缝的合并，串联，循环播放媒体文件。
能够被高度扩展和定制，以适用不同的场景。
加载速度快
支持视频截图
支持自定义组件

缺点：

在某些设备上播放音频，ExoPlayer可能会比MediaPlayer消耗更多的电量。

ExoPlayer gitHub 地址：https://github.com/google/ExoPlayer/

集成方式：

implementation 'com.google.android.exoplayer:exoplayer:2.13.2'

使用：

class ExoplayerActivity : Activity(), Player.EventListener {var path: String? = nullprivate var simpleExoPlayer: SimpleExoPlayer? = nullprivate var requestCode = 0override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)requestWindowFeature(Window.FEATURE_NO_TITLE)window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN)setContentView(R.layout.activity_exoplayer)path = intent.getStringExtra("ADDRESS")requestCode = intent.getIntExtra("requestCode", 200)initView()}private fun initView() {simpleExoPlayer = SimpleExoPlayer.Builder(this).build()path?.let {val mediaItem: MediaItem = MediaItem.fromUri(it)simpleExoPlayer?.setMediaItem(mediaItem)simpleExoPlayer?.prepare()}simpleExoPlayer?.addListener(this)exoplayer_videoView.player = simpleExoPlayerfindViewById<View>(R.id.exoplayer_back).setOnClickListener { onBackPressed() }}override fun onPlaybackStateChanged(state: Int) {//        Player.STATE_IDLE -> "ExoPlayer.闲置状态      -"
//        Player.STATE_BUFFERING -> "ExoPlayer.国家缓冲 -"
//        Player.STATE_READY -> "ExoPlayer.准备就绪     -"
//        Player.STATE_ENDED -> "ExoPlayer.状态已结束     -"
//        else -> "UNKNOWN_STATEwhen (state) {Player.STATE_READY -> {exoplayer_progressBar.visibility = View.GONE}else -> {}}}override fun onResume() {super.onResume()simpleExoPlayer?.play()}override fun onStop() {super.onStop()simpleExoPlayer?.pause()}override fun onDestroy() {super.onDestroy()simpleExoPlayer?.removeListener(this)simpleExoPlayer?.release()}// 捕获返回键的方法2@Overrideoverride fun onBackPressed() {if (requestCode == 200) {super.onBackPressed()} else {saveBitmap()}}/*** 获取并保存截图*/private fun saveBitmap() {try {val textureView: TextureView = exoplayer_videoView.videoSurfaceView as TextureViewval screenshotBitmap = textureView.bitmapval path = getExternalFilesDir(null).toString() + "/monitoringScreenshots/"val file = File(path)if (!file.exists()) {file.mkdirs()}//文件名为时间val timeStamp = System.currentTimeMillis()val sdf = SimpleDateFormat("yyyyMMdd_HHmmss")val sd = sdf.format(Date(timeStamp))val fileName = "$sd.jpg"val savePath = path + fileNameval outputStream = FileOutputStream(savePath)screenshotBitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream)outputStream.flush()outputStream.close()setResult(savePath)} catch (e: IOException) {e.printStackTrace()finish()}}/*** savePath 截图保存地址** @param savePath*/private fun setResult(savePath: String) {val intent = Intent()intent.putExtra("screenshotPath", savePath)setResult(RESULT_OK, intent)finish()}
}

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"android:background="@color/color_000000"tools:context="com.tzyun.pip.ijkPlayer.ExoplayerActivity"><com.google.android.exoplayer2.ui.PlayerViewandroid:id="@+id/exoplayer_videoView"android:layout_width="0dp"android:layout_height="0dp"app:auto_show="false"app:use_controller="false"app:surface_type="texture_view"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent" /><ImageViewandroid:id="@+id/exoplayer_back"android:layout_width="wrap_content"android:layout_height="48dp"android:contentDescription="@null"android:paddingStart="13dp"android:paddingEnd="13dp"android:src="@mipmap/back_video"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintTop_toTopOf="parent" /><ProgressBarandroid:id="@+id/exoplayer_progressBar"android:layout_width="wrap_content"android:layout_height="wrap_content"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent" /></androidx.constraintlayout.widget.ConstraintLayout>