获取PHAsset类的对象中视频资源／大小／七牛上传／进度监听

PHAsset类的对象对应的视频并不一定保存在本地相册，也可能保存在云相册，本地只是有一个缩略图，需要联网同步：

// 允许同步网络相册
PHVideoRequestOptions *option = [[PHVideoRequestOptions alloc] init];
option.networkAccessAllowed = YES;
option.progressHandler = ^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
    if (error) {
        weakSelf.progressView.hidden = YES;
        weakSelf.videoImageView.image = preImage;
        [SVProgressHUD showErrorWithStatus:@"相册同步资源失败"];
    }
};
// 获取视频数据
[[PHImageManager defaultManager] requestAVAssetForVideo:videoAsset options:option resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
    if ([asset isKindOfClass:[AVURLAsset class]]) {
        AVURLAsset* urlAsset = (AVURLAsset*)asset;
        NSNumber *size;
        [urlAsset.URL getResourceValue:&size forKey:NSURLFileSizeKey error:nil];
        // 视频大小
        CGFloat videoSize = [size floatValue]/(1024.0*1024.0);
        if (videoSize > 12.00) {
            weakSelf.progressView.hidden = YES;
            weakSelf.videoImageView.image = preImage;
            [SVProgressHUD showErrorWithStatus:@"上传视频不能大于12M"];
        } else {
            // 视频数据
            NSData *data = [NSData dataWithContentsOfURL:urlAsset.URL];
            [[JKRQiNiuManager sharedManager] uploadVideo:data progressHandler:^(NSString *key, float percent) {
                NSLog(@"%@-%f", key, percent);
                dispatch_async(dispatch_get_main_queue(), ^{
                    weakSelf.progressView.progress = percent;
                });
            } success:^(NSString * _Nonnull url) {
                weakSelf.progressView.hidden = YES;
            } failure:^{
                weakSelf.progressView.hidden = YES;
                weakSelf.videoImageView.image = preImage;
                [SVProgressHUD showErrorWithStatus:@"上传视频失败"];
            }];
        }
    }
}];

七牛上传

QNUploadOption *uploadOption = [[QNUploadOption alloc] initWithMime:nil progressHandler:^(NSString *key, float percent) {
    progress(key, percent);
} params:nil checkCrc:NO cancellationSignal:^BOOL{
    return self.flag;
}];
[self.qnUploadManager putData:video key:@"filename" token:@"token" complete:^(QNResponseInfo *info, NSString *key, NSDictionary *resp) {
    if (info.ok) {
        NSString *vidoURL = @"";
        success(vidoURL);
    } else {
        failure();
    }
} option:uploadOption];