Sorry CameraFTP server does not support this feature. It is not hard for image-recording cameras; for video-recording cameras, it is harder, but still possible. The main reason is this method is not efficient. For example, if a user only wants to upload images/videos of 640x480, but his camera uploads images/videos of 8MP, it will use 10 times more bandwidth and far more CPU processing power to resize/crop the images/videos. It is much easier and more efficient to do so on the camera device side.