I have been playing about with recording videos and my own voice in BF2142. The problem I have is that everything gets recorded not just what I want other people to hear, things like my own breathing or the kids in the background or me ranting because I have just been killed for the 10th time in a row. So I thought there has to be a way I can un-mute my microphone only when I hold down one of my voip keys and even more than that only un-mute when I am recording in game and press one of my voip keys.

So what I did was start messing about creating some scripts with AutoHotKey (I have this on my system because I used it in the past to create a sticky crouch key for BF2142). I created a script that when I press the key that starts recording in fraps (in my case the [ key) will also start the scripts that correspond to voip keys for BF2142 and Teamspeak, and then when I press the same key to stop recording the voip un-mute key scripts are then stopped. Now I am no autohotkey wiz so there may be better ways of doing this but this seems to work for me. I called my first script record-key.ahk this then starts 3 more scripts called key-01.ahk, key-02.ahk and key-03.ahk when the [ key is pressed for the first time and then kills the same 3 scripts when its pressed again. The key-0x.ahk scripts un-mute the microphone while the assigned key is held down then mute it again when the key is relesed.

This a commented record-key.ahk script

$[::
; This script runs key press scripts that are used to un-mute and mute the microphone
keywait,[ ; Waits for the key that is assigned to start/stop recording in Fraps to be pushed and released
; Run the key press scripts one for each key used for voip i.e. Teamspeak, Sqaud voip, Commander voip
;run, full\path\of\scripts
run, D:\Scripts\key-01.ahk
run, D:\Scripts\key-02.ahk
run, D:\Scripts\key-03.ahk
keywait,[,D ; Waits for the key that is assigned to start/stop recording in Fraps to be pushed again
SetTitleMatchMode, 2 ; Use with the WinClose command
DetectHiddenWindows, On
; Kill the key press scripts now that recording is finished
; WinClose, scriptname ahk_class AutoHotkey
WinClose, key-01.ahk ahk_class AutoHotkey
WinClose, key-02.ahk ahk_class AutoHotkey
WinClose, key-03.ahk ahk_class AutoHotkey
DetectHiddenWindows, Off
; I added this as an after thought just in case you stop recording while still holding one of the voip keys
SoundSet,1 , MICROPHONE, MUTE
Return

This is a commented key-01.ahk script

$v::
; This script toggles microphone mute when the V key is pressed and released
keywait,v,D ; Waits for key to be pressed down
SoundSet,0 , MICROPHONE, MUTE ; Un-mute the microphone
send {v down} ; Tell the OS that the key is pressed down
keywait,v ; Waits for key to be released
send {v up} ; Tell the OS that the key has been released
SoundSet,1 , MICROPHONE, MUTE ; Mute the microphone
Return

Below are the real scripts I use.

record-key.ahk

$[::
keywait,[
;run, full\path\of\scripts
run, D:\Scripts\key-01.ahk
run, D:\Scripts\key-02.ahk
run, D:\Scripts\key-03.ahk
keywait,[,D
SetTitleMatchMode, 2
DetectHiddenWindows, On
;WinClose, scriptname ahk_class AutoHotkey
WinClose, key-01.ahk ahk_class AutoHotkey
WinClose, key-02.ahk ahk_class AutoHotkey
WinClose, key-03.ahk ahk_class AutoHotkey
DetectHiddenWindows, Off
SoundSet,1 , MICROPHONE, MUTE
return

key-01.ahk

$n::
; This script toggles microphone mute when the N key is pressed
keywait,n,D
SoundSet,0 , MICROPHONE, MUTE
send {n down}
keywait,n
send {n up}
SoundSet,1 , MICROPHONE, MUTE
return

key-02.ahk

$v::
; This script toggles microphone mute when the V key is pressed
keywait,v,D
SoundSet,0 , MICROPHONE, MUTE
send {v down}
keywait,v
send {v up}
SoundSet,1 , MICROPHONE, MUTE
return

key-03.ahk

$b::
; This script toggles microphone mute when the B key is pressed
keywait,b,D
SoundSet,0 , MICROPHONE, MUTE
send {b down}
keywait,b
send {b up}
SoundSet,1 , MICROPHONE, MUTE
return

So run the record-key.ahk and then fraps, but you can test it by just running the record-key.ahk on its own and pressing the [ key then talk while holding down V key, if its all working you should here yourself via your headphones. You can then press the [ key again and then hold down the V key should no longer un-mute/mute your microphone. Oh of course you need to have autohotkey installed on your pc for the scripts to work...