Question

我正在访问Web上的mp4文件-该文件在浏览器中可以正常运行，但是由于某些原因，我似乎只能在应用中使用音频部分。任何帮助将不胜感激。

相关Gradle：

android {
    compileSdkVersion 28
        minSdkVersion 17
        targetSdkVersion 28

    compileOptions {
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation "com.android.support:support-compat:28.0.0"
    implementation "com.android.support:support-media-compat:28.0.0"
    implementation "com.google.android.exoplayer:exoplayer-core:2.7.2"
    implementation "com.google.android.exoplayer:exoplayer-ui:2.7.2"
}

布局视图：

<com.google.android.exoplayer2.ui.PlayerView
    android:id="@+id/playerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_constraintTop_toTopOf="parent"
    android:layout_marginTop="0dp"
    android:layout_marginRight="0dp"
    app:layout_constraintRight_toRightOf="parent"
    android:layout_marginBottom="0dp"
    android:layout_marginLeft="0dp"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintBottom_toTopOf="@+id/horizontalHalf"
     />

片段中的相关代码：

private SimpleExoPlayer mExoPlayer;
private static MediaSessionCompat mMediaSession;
private PlaybackStateCompat.Builder mStateBuilder;



BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory =
                new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector =
                new DefaultTrackSelector(videoTrackSelectionFactory);
LoadControl loadControl = new DefaultLoadControl();
DefaultRenderersFactory renderersFactory = new DefaultRenderersFactory(mParentActivity);

mExoPlayer = ExoPlayerFactory.newSimpleInstance(renderersFactory, trackSelector, loadControl);
mPlayerView.setPlayer(mExoPlayer);

mExoPlayer.addListener(this);

DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(mParentActivity, "APP_NAME");
DefaultExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();

MediaSource mediaSource = new ExtractorMediaSource.Factory(dataSourceFactory).setExtractorsFactory(extractorsFactory).createMediaSource(mediaUri);

mExoPlayer.prepare(mediaSource);
mExoPlayer.setPlayWhenReady(true);

Answer 1

您介意尝试HlsMediaSource吗？这通常对我有用

val bandwidthMeter = DefaultBandwidthMeter()
val videoTrackSelectionFactory = AdaptiveTrackSelection.Factory(bandwidthMeter)
val trackSelector = DefaultTrackSelector(videoTrackSelectionFactory)
player = ExoPlayerFactory.newSimpleInstance(context, trackSelector)

val dataSourceFactory = OkHttpDataSourceFactory(
          OkHttpClient(),
          Util.getUserAgent(context, context.getString(R.string.app_name)),
          bandwidthMeter
)
val videoSource = HlsMediaSource.Factory(dataSourceFactory)
          .createMediaSource(Uri.parse(url))

player?.prepare(videoSource)

此外，将其添加到您的gradle的依赖关系中

implementation "com.google.android.exoplayer:extension-okhttp:2.7.2"

Answer 2

天哪，这是一个奇怪的家伙...所以事实证明，问题在于为应用设置背景主题会导致exoplayer的显示被隐藏...

因此，只需定义此定义就足够了。如果我从此处删除背景，则一切正常。我仍然不知道如何同时显示该视频和背景...

> <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
>     <!-- Customize your theme here. -->
>     <item name="android:background">@color/colorPrimary</item> </style>

我希望在这里拥有此功能将来可以帮助其他人避免此问题。

Answer 3

在我的情况下，清单中的硬件加速设置为false。

android:hardwareAccelerated="true"是exoplayer中的纹理视图正常工作所必需的。

Answer 4

我的案子很奇怪。我试图避免使用过时的方法，而我使用的是：

new ExoPlayer.Builder(this, new MediaCodecVideoRenderer(this, MediaCodecSelector.DEFAULT), new MediaCodecAudioRenderer(this, MediaCodecSelector.DEFAULT)).build();

我将其更改为：

new SimpleExoPlayer.Builder(this).build();

这解决了我的问题。

Answer 5

请检查您的代码，PlayerView setPlayer不止一个可能导致问题...

Android Exoplayer仅播放没有视频的音频

5 个答案: