How to save a frame-by-frame animated SVG?

Question

linux

How to save SVG animation into a series of bitmap frames with specified interval and relatively accurate timing?
For example, there is such an SVG . It uses fonts and filters for motion blur. Let's say we know the duration of this animation (1 second) and the desired frame rate (30fps). You need to get 30 frameXX.png files. It
will work on the backend under Linux. Tried phantom.js (imprecise timing), ImageMagick convert - all wrong. Do you really have to launch a VM with a browser, capture the "screen" and manually look for the beginning of the animation ..