Remove audio from video with ExoPlayer

transformationExmpl.kt

// inside the composable function

val context = LocalContext.current
	
var exoPlayer by remember { mutableStateOf<ExoPlayer?>(null) }
	
val transformerListener = remember {
	object : Transformer.Listener {
		override fun onTransformationCompleted(inputMediaItem: MediaItem, transformationResult: TransformationResult) {
			super.onTransformationCompleted(inputMediaItem, transformationResult)
			exoPlayer = ExoPlayer.Builder(context)
				.setLooper(Looper.getMainLooper())
				.build()
				.apply {
					setMediaItem(
						MediaItem.fromUri(
							File(
								context.cacheDir,
								"$id.mp4"
							).toUri()
						)
					)
					prepare()
				}
		}
	}
}
	
val transformer = remember {
	Transformer.Builder(context).apply {
		setLooper(Looper.getMainLooper())
		setRemoveAudio(true)
		addListener(transformerListener)
	}.build()
}
	
DisposableEffect(transformer) {
	transformer.startTransformation(
		MediaItem.fromUri(videoUri),
		File(
			context.cacheDir,
			"$id.mp4"
		).path
	)
	onDispose {
		transformer.removeAllListeners()
	}
}