As far as I gathered the stylize ofx is an implementation of "Style transfer" algorithm, already trained with some dataset.
What it lacks is temporal coherence, it flickers a lot. There are some workaround but still with mediocre results. A new version of the algorithm might be more suitable for a software that deals with videos.
https://www.fritz.ai/style-transfer/https://arxiv.org/abs/1807.01197https://paperswithcode.com/paper/recone ... style#code