As I see it, there are two possible reasons why the whole video has not been released.
1-The gubberment asked them not to. The edited and cut section of footage that has been released got out before they asked them to not post the whole thing. If this is the case, the whole video is probably gone. The gubberment just got really lucky that KCBS chose to use no footage of the lingering smoke trail with the object disapearing off into the west in their report, and that they chose not to just stick all the uncut footage up on the web.
2-The whole video would not show boost stages and then 8-9 minutes of a lingering smoke plume. It would show a jet. A local CBS station manipulated the video to make traffic for their website and give the story legs. If this is the case, the whole video is probably gone, in order to save jobs and more black eyes for the CBS name.
Freegards
The video was shot from a moving helicopter. Probably not gonna be a continuous recording. Gonna be chopped up quite a bit.