As a starter, I tried to make a programmable source for assigning every data step to a, time step… but I don’t have necessary knowledge 
there was a post at CFD-online, but that method does not work with current version for some reason. I.e. I don’t know how to fix that code for importing full-range time/data-set with float time labels.
And well, making animation by other means, seems only possible by dumping 770 PDFs from Octave, and then combining them to one GIF…
considering theoretical capabilities of plotting, there is plot_data_over_time filter. there is also streamline filter, and Contour by “IntegrationTime”. I guess, those would help building the animation, but only when I prepare the time-dependent data.