I got an addition for those of you who use virtualdub for cutting and would like to include the gamesounds although recording at lower speeds:
in fraps, set the tick beside "record sound".. then, before recording in lfs, make sure you don't use a variable framerate but set the same framerate that you use in fraps (otherwise the sound and video might later not be synchron, as I once noticed after I was just done with cutting an lfs video :schwitz
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after recording, open your clip(s) in virtualdub and do the following:
- audio -> [x] full compressing mode -> [x] use advanced filtering
- audio -> filters -> add ... - add "input", "stretch" and "output"..
- close that add-filter-window and doubleclick the stretch-element in the filter-window... then set the speed you recorded at (e.g. 0.25 if you recorded in 1/4 speed)
after adjusting the framerate of the video just like Squid described you should have a perfectly synchronal gamesound - without a loss of quality.
one more thing, lfs disables the sounds when playing a replay at 0.125x speed, so if you record at this speed, this method won't work.