playvideo method

private fun playbackArVideo(augmentedImage: AugmentedImage) {
        Log.d(TAG, "playbackVideo = ${augmentedImage.name}")
        
        
        

        requireContext().assets.openFd(augmentedImage.name)
            .use { descriptor ->

                val metadataRetriever = MediaMetadataRetriever()
                metadataRetriever.setDataSource(
                    descriptor.fileDescriptor,
                    descriptor.startOffset,
                    descriptor.length
                )

                val videoWidth =
                    metadataRetriever.extractMetadata(METADATA_KEY_VIDEO_WIDTH).toFloatOrNull()
                        ?: 0f
                val videoHeight =
                    metadataRetriever.extractMetadata(METADATA_KEY_VIDEO_HEIGHT).toFloatOrNull()
                        ?: 0f
                val videoRotation =
                    metadataRetriever.extractMetadata(METADATA_KEY_VIDEO_ROTATION).toFloatOrNull()
                        ?: 0f

                // Account for video rotation, so that scale logic math works properly
                val imageSize = RectF(0f, 0f, augmentedImage.extentX, augmentedImage.extentZ)
                    .transform(rotationMatrix(videoRotation))

                val videoScaleType = VideoScaleType.CenterCrop

                videoAnchorNode.setVideoProperties(
                    videoWidth = videoWidth,
                    videoHeight = videoHeight,
                    videoRotation = videoRotation,
                    imageWidth = imageSize.width(),
                    imageHeight = imageSize.height(),
                    videoScaleType = videoScaleType
                )

                // Update the material parameters
                videoRenderable.material.setFloat2(
                    MATERIAL_IMAGE_SIZE,
                    imageSize.width(),
                    imageSize.height()
                )
                videoRenderable.material.setFloat2(MATERIAL_VIDEO_SIZE, videoWidth, videoHeight)
                videoRenderable.material.setBoolean(MATERIAL_VIDEO_CROP, VIDEO_CROP_ENABLED)

                mediaPlayer.reset()
                mediaPlayer.setDataSource(descriptor)
            }.also {
                mediaPlayer.isLooping = true
                mediaPlayer.prepare()
                mediaPlayer.start()
            }


        videoAnchorNode.anchor?.detach()
        videoAnchorNode.anchor = augmentedImage.createAnchor(augmentedImage.centerPose)

        activeAugmentedImage = augmentedImage

        externalTexture.surfaceTexture.setOnFrameAvailableListener {
            it.setOnFrameAvailableListener(null)
            fadeInVideo()
        }
    }

Whats this @Tyqjshdidbhdid L130108001?