Get the size like this
NSError *error = nil;
NSDictionary *attributes = [[NSFileManager defaultManager]
attributesOfItemAtPath:[self.movieURL path] error:&error];
if (!error) {
NSLog(@" size= %@",[attributes objectForKey:NSFileSize]);
}else{
NSLog(@"err= %@",error);
}
if you want KB
NSString *myString = [self.movieURL path];
NSData *videoData = [NSData dataWithContentsOfFile:myString];
NSLog(@"%@",[NSByteCountFormatter stringFromByteCount:videoData.length countStyle:NSByteCountFormatterCountStyleFile]);