applescript help

Hey guys im trying to have a script that converts my .mov's to mpeg4. I have a script that converts them the only problem is i cant seem to get it to take on the settings i would like it too

tell application "QuickTime Player"
activate

try
if not (exists movie 1) then error "No movies are open."

stop every movie

set the movie_name to "mytest.mp4"
if (can export movie 1 as MPEG4) is true then
set thesettings to "Macintosh HD: johndoe: Desktop: set1test"
set the new_file to ¬
choose file name with prompt "Enter a name:" default name movie_name
export movie 1 to new_file as MPEG4 using settings thesettings

end if

end try
end tell
This is my script notic the "thesettings" part is trying to call on a file that was suppossed to be the export settings saved. If anyone can help I would appreciate it!

Try changing this line:

Macintosh HD: johndoe: Desktop: set1test

to this:

Macintosh HD: Users: JohnDoe: Desktop: set1test

:mac:

Also, you may want to change this line:

if not (exists movie 1) then error "No movies are open."

to this:

if not (exists movie 1) then display dialog "No movies are open."