Hi, we're trying to set a custom thumbnail image from URL to an AVPlayer on our iOS app. We're trying to use external metadata of a AVPlayerItem, but it doesn't work. let thumbailData = // image jpg data downloaded from internet let videoUrl = // HLS video url // AVURLAsset creation with HLS url let avAsset = AVURLAsset(url: videoUrl) // AVPlayerItem with AVURLAsset we've just created let avPlayerItem = AVPlayerItem(asset: avAsset) // retrieve external metadatas of AVPlayerItem var metadata = avPlayerItem.externalMetadata // Creation new metadata for thumbnail let thumbnailMetadata = AVMutableMetadataItem() thumbnailMetadata.keySpace = AVMetadataKeySpace.common thumbnailMetadata.key = AVMetadataKey.commonKeyArtwork as NSString thumbnailMetadata.identifier = AVMetadataIdentifier.commonIdentifierArtwork thumbnailMetadata.dataType = kCMMetadataBaseDataType_JPEG as String thumbnailMetadata.value = thumbnailData as NSData thumbnailMetadata.extendedLanguageTag = "und" as String if let metadataItem = thumbnailMetadata.copy() as? AVMetadataItem { metadata.append(metadataItem) } // AVPlayer creation let player = AVPlayer(playerItem: avPlayerItem) // set player on AVPlayerViewController playerVc.player = player Any suggestion? Is it the right way to reach our goal? Thank you