The man says in the film that the recording was made on 5 April in the city of Tucson, Arizona.
Iranian TV reports said the Iranian security services obtained the film "by special methods" but did not elaborate.
On Monday the clip was posted on to YouTube.
Responding to the allegation on Tuesday, state department spokesman Philip Crowley told reporters: "Did the United States kidnap [Mr Amiri] from Saudi Arabia? The answer is No."
In the second clip, posted hours later to a YouTube account in the name of Shahramamiri2010, the man says he lives safely in the city and wants to continue his education in the US.
Post je objavljen 08.06.2010. u 23:16 sati.