Recording Quality

[croozeus]

Hello Python Brothers

Below is a code in which i have defined 2 methods one is for recording and the other is for playing.I have been making some recording applications and i have been successfully been able to record wav files with good speed and quality output.Now i want to record an mp4 file but i am not successful with the quality of the recorded sound.I think the speed of the recorded sound is an issue as well.When i play the recorded sound it run faster then the normal sound that had been recorded.Is there a Solution to this problem??
I have tried the Below code on 6680 as well as 7610 and both have the same problem.

filename = 'e:\\other\\recorded+".mp4"

def recording():
    global S
    S=audio.Sound.open(filename)
    S.record()
    print "Recording On...." 

def playing():
    global S
    try:
        S=audio.Sound.open(filename)
        S.play()
        print "Playing"
    except:
        appuifw.note(u"Record to the File first", "error")

Has anybody else tried the Mp4 recording??
Any help will be appreciated.

Best Regards