It depends how long you want to record video.
If you have enough memory to store all the images in RAM, you can just allocate a sequence, acquire all the images, then store them.
If you need to store continuous video for a significant period of time, you will need to store image on the fly. Take a look at the Graftek web site - I think they have a utility for doing this.
Bruce
Bruce Ammons
Ammons Engineering