The video was posted on the internet site here
The blurred, grainy images showed between five and seven figures scurrying among the rocks along the ridge, and flashes of gunfire and from RPGs, according to the American commentary.
In the final sequences, four precision bombs were shown exploding, but the commentator asserted that no military structure or posts were in the impact areas.
The U.S. military said the operation was coordinated with Pakistan and the Pentagon defended U.S. forces, saying initial indications pointed to a "legitimate strike" carried out in self-defence after they came under attack.
Pakistan contested the U.S. version and issued a protest.
On a visit to France, Pakistani Foreign Minister Shah Mehmood Qureshi said such "tragic incidents" only helped the militant cause and he called on the United States to cooperate much more with the Pakistani military.
U.S. Defense Secretary Robert Gates on Thursday said he regretted the death of Pakistani soldiers and praised Pakistan as an "incredibly important partner". He also invited Pakistani and Afghan officials to help investigate.
Pilotless drones have carried out several strikes targeting al Qaeda militants inside Pakistan's tribal areas.
The number of casualties suffered by Pakistani forces in Tuesday's attack was the worst they have suffered as a result of U.S. action in nearly eight years since the alliance was formed.
A new Pakistani government, led by the party of assassinated former prime minister Benazir Bhutto, has been negotiating with ethnic Pashtun tribes to get them to press the militants to give up a campaign of violence in Pakistan in which hundreds of people have been killed over the past year.
Gates told a news conference in Brussels on Friday the United States had been sceptical about such deals in the past but it was up to Pakistan to decide how to handle the situation.
"They are seeing if there's a way to negotiate arrangements with some of the tribes and I think we just have to give them some space to be able to pursue this," he said.
