iOS获取视频文件大小和时长

1 、获取网络链接的视频大小和时长

AVURLAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];// url：网络视频的连接
    NSArray *arr = [asset tracksWithMediaType:AVMediaTypeVideo];// 项目中是明确媒体类型为视频，其他没试过
    CGSize videoSize =CGSizeZero;

    for (AVAssetTrack *track in arr) {
     if([track.mediaType isEqualToString:AVMediaTypeVideo])
     {
        if (track.totalSampleDataLength >= 1048576) {//1048576bt = 1M  小于1m的显示KB 大于1m显示M
            lable.text = [NSString stringWithFormat:@"%.2lldM",track.totalSampleDataLength/1024/1024];
        } else {
            lable.text = [NSString stringWithFormat:@"%.1lldKB",track.totalSampleDataLength/1024];
        }
           videoSize = track.naturalSize;
        
      }

    }

2 、获取保存在你app沙盒中的视频文件

导入 #import

/**
 * @method
 *
 * @brief 根据路径获取视频时长和大小
 * @param path       视频路径
 * @return    字典    @"size"－－文件大小   @"duration"－－视频时长
 */
- (NSDictionary *)getVideoInfoWithSourcePath:(NSString *)path{
    AVURLAsset * asset = [AVURLAsset assetWithURL:[NSURL fileURLWithPath:path]];
    CMTime   time = [asset duration];
    int seconds = ceil(time.value/time.timescale);

    NSInteger   fileSize = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil].fileSize;

    return @{@"size" : @(fileSize),
             @"duration" : @(seconds)};
}

3 、获取PHAsset 文件大小

 PHAssetResource *resource = [[PHAssetResource assetResourcesForAsset:asset] firstObject];
    long long size = [[resource valueForKey:@"fileSize"] longLongValue];
和
 PHVideoRequestOptions *options = [[PHVideoRequestOptions alloc] init];
    options.version = PHVideoRequestOptionsVersionOriginal;
    [[PHImageManager defaultManager] requestAVAssetForVideo:asset options:options 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];
            dispatch_async(dispatch_get_main_queue(), ^{
                 
            });
        } else {
            imageLable.text = [NSString stringWithFormat:@"0KB"];

        }
    }];