Flipbook Pro allows for extra control over your spritesheet. Simply plugin the MF_FlipbookPro into your texture's UV slot and get started.
Overview Flipbook Pro
Columns and rows parameters, to fit your spritesheet grid
Start and end offset parameters, so having several spritesets in one sheet is no problem
FPS parameter, customize it to your need for (frame)speed
Framestep parameter, skipping frames is nothing personal kid
Animation offset, so every instance is a special snowflake
Contains
MF_FlipbookPro
BP_Flipbook (to demonstrate animation offset)
M_FlipbookPro (in case you want MF_FlipbookPro in material format)
4 textures (T_BallAnimation, T_RotationAnimation, T_TestSpriteSheet_1, T_TestSpriteSheet_2)
Demo map
M_Demo + 15 instances
Notes
As an extra, in M_Demo you can find billboard logic done fully in the material editor.