you hereby acknowledge and agree that if you -lrb- i -rrb- desire to post -lrb- as defined below -rrb- a user video to any external sites ; or -lrb- ii -rrb- use a user video for any commercial purpose , then , in each case , you must obtain all necessary consents from each owner of any third party content included in your user video , including creators in the event you incorporated any user content in a collaborative ugv .