ios - 如何获取从 UIimagePicker 中获取的视频的大小？

Question

我使用下面的代码，但它没有显示准​​确的大小，假设我的文件大小是 50Mb，但它显示大约 90MB。

NSError *error;
NSURL * mediaURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSDictionary * properties = [[NSFileManager defaultManager] attributesOfItemAtPath:mediaURL.path error:&error];
NSNumber * size = [properties objectForKey: NSFileSize];

我也尝试了下面的代码

NSDictionary *attribs = [[NSFileManager defaultManager] attributesOfItemAtPath:moviePath error:&error];
if (attribs) {
    NSString *string = [NSByteCountFormatter stringFromByteCount:[attribs fileSize] countStyle:NSByteCountFormatterCountStyleFile];
    NSLog(@"%@", string);
}

这也是相同的结果。我想要确切的文件大小。任何人都可以帮助我吗？谢谢

Answer 1

NSError *attributesError;
NSURL *videoUrl=[info objectForKey:UIImagePickerControllerMediaURL];

    NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[videoUrl path] error:&attributesError];
    NSNumber *fileSizeNumber = [fileAttributes objectForKey:NSFileSize];
    long long fileSize = [fileSizeNumber longLongValue];
    NSLog(@"SIZE OF VIDEO: %0.2f Mb", (float)fileSize/1024/1024);

这段代码完全可以工作