GaiaViz has animation capabilities you can control from the interface with the following keys:

Animation - Channels & Tracks

Hotkeys Actions
P Plays/pause track animation ([dataset]_np_ch-tracks.csv & [dataset]_np_ch-map.csv)
’>’ (comma) Increase playback speed
’<’ (period) Decrease playback speed (negative values play in reverse).
Alt + ‘>’ (comma) Channel Up for selected nodes.
Alt + ‘<’ (period) Channel Down for selected nodes.

When you activate animation track, a time scrubber appears at the bottom of the screen. Drag it back and forth on the timeline to go forward or backward in the animation.