How do I calculate the default input Vector for a compositor node?

[Mark_McKay]

I’m trying to figure out what node to feed into the Vector field of my Noise Texture node that is equivalent to what the generated default is.

What I’m aiming to do is animate the Z component of the noise to match the current frame to create an effect like a bad camera feed. But I don’t know how I would calculate the X and Y components that would match what is generated by default.

[sven2]

I’m not sure if this is correct, but Uniform image coordinates seems so be the same as the default (in my case, anyway)