/**
* @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;
- (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)};
}