Nigeria has refused Boko Haram's request to free imprisoned Islamic militants in return for the release of hundreds of kidnapped schoolgirls.
Interior Minister Abba Moro said Boko Haram, the group holding the girls, was in no moral position to make the offer.
According to the BBC, Boko Haram abducted more than 200 girls from a school on 14 April.
The video released on Monday showed 136 girls, and was interspersed with militants explaining that they had 'converted' to Islam.
Three of the girls were seen wearing full-length cloaks. Two said that they were Christian and have converted, while the other says she is Muslim.
The US state department said intelligence experts were closely examining the footage for clues to the girls' whereabouts, the report added.
