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];

这是我用来获取不包括慢动作视频的视频的代码。但是我正在关注 error.This 即使我这样做也不起作用，

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

有人请帮助。提前致谢。

Unsupported predicate in fetch options: mediaSubtype == 131072

Answer 1

试试这个：

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

Answer 2

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 3

Swift 4

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

NSPredicate 从 PHFetchResults 中排除慢动作视频

NSPredicate to exclude slow motion videos from PHFetchResults

objective-c

ios

photosframework

phfetchoptions