How to make particle grains move across screen on render? So for a video I'm working on, I'm trying to achieve an older film effect so I followed this tutorial: 

https://youtu.be/-1zr1zFQawA

I worked out surprisingly well for the most part but I noticed that neither the vertical lines or grain move across the screen in the video like they're supposed to.
Watch closely from 43:30 - he adds a keyframe to some node values and then adds a noise modifier to the the keyed value.



A little later about 47:05, he adds a translate node and keys the x and y values to get some parts moving across the screen.