Open Colour with the Theme ICM (intentional camera movement) & out of focus. This means the camera must be moved during exposure, panning is good, zoom burst is good, slow exposure movement is good as is intentional out of focus*, not to be confused with a camera on a tripod, using a long exposure capturing motion.
Size as follows:
maximum width 1920 pixels with a maximum height of 1200 pixels OR a height of 1200 Pixels with a length of pro-rata (this will always be smaller than 1920 unless it is letterbox, in which case you would select the length. If you choose a squarish format please check which is the bigger, height or width and size accordingly, either 1920 or 1200 neither can be bigger.