How can I make my image a scrolling animation and loop?

Here’s what I mean. I have this water flowing image I created in gimp which is seamless so all I did is created the exact image under it. Like a film strip.

I want my water to seem a bit more realistic by adding in some motion.

I tried out a few scripts on the wiki but it doesn’t repeat.

Instead it does something like this when the UV moves off the texture.
[32093-help+or+idk.png|32093]

It doesn’t want to loop.

Make sure the texture wrap mode is set to repeat, not clamp.