The video, which was taken at night, shows shows the kidnappers not even bothering to cover their faces as they abducted Kjartan Sekkingstad, a Norwegian and operations manager of the Ocean View marina Canadians John Ridsdel and Robert Hall, and a Filipina woman.
In the video, at least ten people, many carrying weapons, frogmarch the abductees were over a narrow foot bridge, and there are signs of a struggle as one person appears to resist.
Police report that two boats believed to have used by the kidnappers have been found, and that the victims were probably taken to a mountainous region in the south.
The Philippines' GMA News Online site also reports that a Japanese woman and her Canadian husband were able to escape the kidnappers by jumping into the water from one of the boats.
"From Governor Generoso, you can tell the general direction of where they are going," military spokesman Colonel Restituto Padilla told news agency DPA. "The general direction is the tip of Zamboanga towards Basilan and Sulu areas."
Canadian authorities have changed their travel advice, warning travelers to the region to "exercise a high degree of caution" because of the terror threat.
The Norwegian Foreign ministry does not advise people to stay away from the region, but travel advice has been updated.
"We have updated our travel advice on our websites and we inform people that there has been a situation in the area. As of yet, we have not changed our travel advice, but we are keeping track of the situation continuously," Veslemøy Salvesen of the Ministry of Foreign affairs told Norway's VG newspaper.