implementation 'com.google.android.exoplayer:exoplayer-core:2.X.X' implementation 'com.google.android.exoplayer:exoplayer-ui:2.X.X' kotlin val playerView: SimpleExoPlayerView = findViewById(R.id.player_view) val player: SimpleExoPlayer = ExoPlayerFactory.newSimpleInstance(this) playerView.player = player kotlin val uri: Uri = Uri.parse("file:///android_asset/video.mp4") val mediaSource: MediaSource = ExtractorMediaSource.Factory(DefaultDataSourceFactory(this, "ExoPlayerDemo")).createMediaSource(uri) kotlin player.prepare(mediaSource) player.playWhenReady = true