AFNetworkingBigUpload.m

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFHTTPSessionManager *_afHTTPSessionManager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:configuration];

// set your response content type here
NSMutableSet *contentTypes = [[NSMutableSet alloc] init];
[contentTypes addObject:@"application/json"];
_afHTTPSessionManager.responseSerializer.acceptableContentTypes = contentTypes;

[_afHTTPSessionManager.requestSerializer setAuthorizationHeaderFieldWithUsername:username password:password];



[_afHTTPSessionManager POST:postUrl parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileData:videoData name:@"uploadedFile" fileName:@"video.mp4" mimeType:@"video/mp4"];
} success:^(NSURLSessionDataTask *task, id responseObject) {
    NSLog(@"video operation success!  %@", responseObject);
} failure:^(NSURLSessionDataTask *task, NSError *error) {
    NSLog(@"Operation Error: %@", error);
}];