now a days you tube videos are optimizing by the behind linking of product so that buyers can reach easily his/her web sites or landing page and may sell or offer can promote so fast.
the length of video will depend on the basis of buyers requirement. if buyer wants he or she will take one video than he or she can buy one. if anyone wants 3 package or 9 gigs than he or she can get it by contact with me.
you tube video
my offer is you tube video with excellent animation .