2008 (UTC) 

 It must have been tape - NO camera which records to SD card will over-tape footage as shown in the film. ALL brands will create seperate files, solid state cameras simply DO NOT produce the kind of footage you see in this film.  The "SD" text at the start of the film is most likely refering to "Standard Definition" as opposed to "High Definition" - ie, the footage is not HD, it's regular digital video.  I'll give it a couple of days for anyone to point me to something to the contrary or object strongly before I edit.    21:25, 13 February