Retrieves the size of a video from its path.

gistfile1.m

+ (CGSize)sizeOfVideoAtPath:(NSString *)path
{
    NSURL *url;
    AVAsset *asset;
    NSArray *tracks;
    
    url = [NSURL fileURLWithPath:path];
    asset = [[AVURLAsset alloc] initWithURL:url options:nil];
    tracks = [asset tracksWithMediaType:AVMediaTypeVideo];
    if(tracks != nil)
    {
        AVAssetTrack *track;

        if([tracks count] > 0)
        {
            track = tracks[0];
            if(track != nil)
            {
                return track.naturalSize;
            }
        }
        else
        {
            NSLog(@"Warning: Unable to retrieve video natural size on %@", path);
        }
    }    
    
    return CGSizeZero;
}