Oh ok, well in that case I’m not sure how you mean the effect to look, there’s a lot of variation in application. You could make/take a paint or brush texture image and overlay it using a blend mode, displacement map, etc, you can put the brush strokes effect directly on your footage layer and posterize it to like 8 or 12 fps to make it look more like a moving painting, or if you have separate animated layers, you could put the brush strokes with or without the posterize time effect at a lower fps on each one and make it look more customized like each layer is painted differently. If you are putting an overlay, it won’t look much like a moving painting, more just like a filter over the video. Not sure if any of those cover the style you want, but there’s a lot of variation there to interpret from.
The Grey Cow