If you want to take a video without the interace ou can hold down F1,
If this is cubersome/hard, you can download autohotkey free from
http://www.autohotkey.com/Its a neat little hotkey maker with some quite amazing abilities, you can create scripts and using the copy cammnd create a program to run a program like excel, i must get the old excel things i made a while ago.
open a new document in autohotkey and paste the below into it, save it in a place you'll remember and then run it. when you press capslock it should hold down F1 for you. simply right click the small icon in your bottom right taskbar thing and click end script to stop it, you may have to tap F1 as well to reset your F1 heystate. If you're playing around with this program and you accidently set the mouse to keep clicking simply restart your computer and remember not to make a programming mistake again.
oh heres what you have to paste:
loop
{
GetKeyState, state, CapsLock
if state = d
{
send {f1 down}
}
else
{
}
sleep 100
}