NSPredicate从PHFetchResults中排除慢动作视频

Question

NSString *predicateFormat = [NSString stringWithFormat: @"mediaSubtype = %zd", PHAssetMediaSubtypeVideoHighFrameRate];
    NSPredicate *predicate = [NSPredicate predicateWithFormat: predicateFormat];

    PHFetchOptions *fetchOptions = [PHFetchOptions new];
    fetchOptions.predicate = predicate;

    PHFetchResult *userAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumVideos options:fetchOptions];

这是我提取视频的代码，不包括慢动作视频。但我得到了以下错误。即使我这样做，这也行不通，

PHFetchOptions *fetchOptions = [PHFetchOptions new];
fetchOptions.predicate = [NSPredicate predicateWithFormat:@"(mediaSubtype & %d) == 0", PHAssetMediaSubtypeVideoHighFrameRate];

有人请帮忙。提前谢谢。

Unsupported predicate in fetch options: mediaSubtype == 131072

Answer 1

要排除慢动作视频，唯一对我有用的谓词是：

PHFetchOptions *options = [PHFetchOptions new];
// Disable slow motion videos
options.predicate = [NSPredicate predicateWithFormat:@"NOT ((mediaSubtype & %d) != 0)", PHAssetMediaSubtypeVideoHighFrameRate];

Answer 2

Swift 4

let assetFetchOptions = PHFetchOptions()
assetFetchOptions.predicate = NSPredicate(format: "NOT ((mediaSubtype & %d) != 0)", PHAssetMediaSubtype.videoHighFrameRate.rawValue)

Answer 3

试试这个：

fetchOptions.predicate = [NSPredicate predicateWithFormat:@"(mediaSubtype != %d)", PHAssetMediaSubtypeVideoHighFrameRate];