Static, as in interference/artifacts in the images?
Other's have commented on the appearances of slight movement, as if the camera isn't firmly fixed (even when it is). I'm not sure what the fix was, if there is one.
You may be able to clean your image up a bit by allocating it some more bandwidth. 2048 fixed isn't much, especially for 25fps and an iframe interval of 10. Maybe try doubling the bandwidth, or even more and see if it helps. Iframe of 25 should be ample too.