subject to the company 's potential blocking of certain content owned or controlled by the third parties , which blocking you hereby authorize , the service enables you to -lrb- i -rrb- create 15-second videos , including videos that incorporate locally stored sound recordings from your personal music library and ambient noise -lrb- each , a `` ugv '' -rrb- , -lrb- ii -rrb- extract all or any portion of the user content -lrb- defined in section 5 .