Number that determines the pseudo-random morphing type for type=0. All pseudo-random emotions can only change the mouth and the eyes area. They might not be found in the usual list of morphing types. The main advantage of pseudorandomness is that when sending the same request, the result is sure to be the same. This makes it possible to make repeated requests or make minor changes to requests (e.g. adding parameters like cartoon or crop_portrait), without changing emotion type. The same random_seed number always results in the same emotion type. If you want to apply different 'random' emotion types to the same face, you should send requests with different random_seed values.
This parameter is available only for type = 1 and 2.
If the value is true, a photo is cropped to contain only the face area. Only one face (the first face found by the algorithm) is cropped from any photo.
If the value is true, the resulting image is edited with the cartoon filter (see cartoon).