Need a Programmers Help

Ok so i have an applescript that will convert my movies to mpeg4, but i was wanting to know if there was a way to check (in applescript) if quicktime was recording a movie or not.
Let me explain: I have an automator workflow that will start a new video capture, i want to be able to have one clickable item and it start the video capture, and when its done run my convert script. Is there a way to do this?

tell application "QuickTime Player"
set isrecordings to (state of recordings as string) contains "recording"
set isplaying to (playing of movies contains true)

if isrecordings then
-- QT is currently recording a movie or a audio
end if
if isplaying then
-- QT is currently playing a movie or a audio
end if
end tell

display dialog isplaying
display dialog isrecordings