do shell script "qlmanage - p /cm.jpg"
set dFolder to "~/Desktop/screencapture/"

do shell script ("mkdir -p " & dFolder)

set i to 0
repeat 960 times
    set tTime to do shell script "date +%H%M%S"
    do shell script ("screencapture " & dFolder & "frame-" & i & ".png")
    delay 5
    set i to i + 1
end repeat