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implementation "androidx.media3:media3-transformer:1.1.1"
implementation "androidx.media3:media3-effect:1.1.1"
implementation "androidx.media3:media3-common:1.1.1"

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private fun convertToGrayScale() {
        val effect = arrayListOf<Effect>()
        effect.add(RgbFilter.createGrayscaleFilter())
        val transformer = with(Transformer.Builder(this)) {
            addListener(object : Transformer.Listener {
                override fun onCompleted(composition: Composition, exportResult: ExportResult) {
                    //Play the video from the path you specified below
                }

                override fun onError(

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val effect = arrayListOf<Effect>()
effect.add(RgbFilter.createGrayscaleFilter())
effect.add(MatrixTransformationFactory.createZoomInTransition())
effect.add(ScaleAndRotateTransformation.Builder().setRotationDegrees(90F).build())
val transformer = with(Transformer.Builder(this)) {
            addListener(object : Transformer.Listener {
                override fun onCompleted(composition: Composition, exportResult: ExportResult) {
                    //Play the video from the path you specified below
                }

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ExoPlayer player = ExoPlayer.Builder(this).build()
player?.playWhenReady = true
val mediaSource = downloadTracker?.getDownloadRequest(Uri.parse(VIDEO_URL))!!.let {
    DownloadHelper.createMediaSource(
        it,
        DemoUtil.getDataSourceFactory(this)
    )
}
player?.setMediaSource(mediaSource)
player?.prepare()

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public void toggleDownload(
      FragmentManager fragmentManager, 
      MediaItem mediaItem, 
      RenderersFactory renderersFactory
      ) {
    Download download = downloads.get(checkNotNull(mediaItem.localConfiguration).uri);
    if (download != null && download.state != Download.STATE_FAILED) {
     DownloadService.sendRemoveDownload(
              /* context= */  context,
              /* DownloadService= */  OfflineVideoDownloadService.class,

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class CustomContract : ActivityResultContract<String, String?>() {
 const val DATA = "data"
 const val INPUT_DATA = "input_data"

    override fun createIntent(context: Context, input: String?): Intent {
        val intent = Intent(context, DummyResultActivity::class.java) 
        intent.putExtra(INPUT_DATA, input)
        return intent
    }

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val mediaItem = MediaItem.fromUri(VIDEO_URL)
val mediaSource =
            HlsMediaSource.Factory(cacheDataSourceFactory).createMediaSource(mediaItem)
player.setMediaSource(mediaSource)

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val cacheSink = CacheDataSink.Factory()
                .setCache(downloadCache)
val upstreamFactory = DefaultDataSource.Factory(this, DefaultHttpDataSource.Factory())
val downStreamFactory = FileDataSource.Factory()
val cacheDataSourceFactory  = 
             CacheDataSource.Factory()
            .setCache(downloadCache)
            .setCacheWriteDataSinkFactory(cacheSink)
            .setCacheReadDataSourceFactory(downStreamFactory)
            .setUpstreamDataSourceFactory(upstreamFactory)

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val DOWNLOAD_CONTENT_DIRECTORY = "downloads"
val downloadContentDirectory = 
  File(getExternalFilesDir(null),DOWNLOAD_CONTENT_DIRECTORY)
var downloadCache = 
  SimpleCache(downloadContentDirectory, NoOpCacheEvictor(), StandaloneDatabaseProvider(this))

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  val defaultHttpDataSourceFactory = DefaultHttpDataSource.Factory()
  val drmConfig = MediaItem.DrmConfiguration.Builder(C.WIDEVINE_UUID)
                  .setLicenseUri(LICENSE_URL)
  val mediaItem = MediaItem.Builder()
                  .setUri(VIDEO_URL)
                  .setDrmConfiguration(drmConfig.build())
val mediaSource = DashMediaSource.Factory(defaultHttpDataSourceFactory)
                  .createMediaSource(mediaItem.build())
player.setMediaSource(mediaSource)