ios - tvOS 视频 : Title metadata truncated, 图稿尺寸太小

Question

我正在为 tvOS 中的 AVPlayer 视频设置元数据。视频标题总是被截断，艺术图片比应有的小得多，我的代码在下面，有什么想法吗？

 AVMutableMetadataItem *titleMetadataItem = [[AVMutableMetadataItem alloc] init];
     titleMetadataItem.locale = NSLocale.currentLocale;
     titleMetadataItem.key = AVMetadataCommonKeyTitle;
     titleMetadataItem.keySpace = AVMetadataKeySpaceCommon;
     titleMetadataItem.identifier = AVMetadataCommonIdentifierTitle;
     titleMetadataItem.value = @"A long title that gets truncated";


     AVMutableMetadataItem *artwork1 = [[AVMutableMetadataItem alloc] init];
     artwork1.key = AVMetadataCommonKeyArtwork;
     artwork1.keySpace = AVMetadataKeySpaceCommon;
     artwork1.dataType = (__bridge NSString * _Nullable)(kCMMetadataBaseDataType_JPEG);
     UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:urlImgThumbnail]]];
     artwork1.value = UIImageJPEGRepresentation(image, .4);

     artwork1.locale = [NSLocale currentLocale];
     //

     NSArray *externalMetadata = [[NSArray alloc] initWithObjects:titleMetadataItem, artwork1, nil];

     player.currentItem.externalMetadata = externalMetadata;

Answer 1

目前我能找到的扩展元数据 View 大小的最佳解决方案是在描述元数据项中添加几个\n。一旦元数据 View 的大小增加，显示的图像就会变大。这也应该可以防止您的标题被删除。