获取小视频的第一帧图片和视频时长

获取小视频时长

```

- (NSDictionary*)getVideoInfoWithSourcePath:(NSString*)path{

    AVURLAsset * asset = [AVURLAsset assetWithURL:[NSURL fileURLWithPath:path]];

    CMTime  time = [asset duration];

    int seconds =ceil(time.value/time.timescale);

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

    return @{@"size" : @(fileSize),

             @"duration":@(seconds)};

}

```

---

获取小视频的第一帧图片

```

-(UIImage*)getImage:(NSString*)videoURL{

    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL fileURLWithPath:videoURL] options:nil];

    AVAssetImageGenerator *gen = [[AVAsset ImageGenerator alloc] initWithAsset:asset];

    gen.appliesPreferredTrackTransform = YES;

    CMTime time = CMTimeMakeWithSeconds(0.0, 600);

    NSError *error =nil;

    CMTime  actualTime;

    CGImage Refimage = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];

    UIImage *thumb = [[UIImage alloc] initWithCGImage:image];

    CGImageRelease(image);

    returnthumb;

}

```