Lukas Blecher writes:
I've started to develop an Add-on for Blender 2.8x that can be useful for rotoscoping or masking objects in clips. The masking is done with the help of the neural network SiamMask which tracks the object and finds a mask for it in every frame. The mask quality is not perfect but can be used as a staring point for the artist. The amount of controll points can be regulated through a few parameters. The source code is hosted on GitHub.