This is just a quick note to remind myself how I did this.
Hypercam2 is a good, free, video recorder that can cope with recording game videos. It’s freely available from http://www.hyperionics.com/hc/downloads.asp - just make sure when you install it you don’t tick on the spyware toolbar installation options.
My motherboard has a 5.1 digital soundcard built in. However the only way I can record off the soundcard is to plug in a standard audio cable from the speaker out (green) to the microphone in (orange).
The soundcard switches off the headphone output when it detects a speaker attached to the speaker out, so you have to go to the recording options in Windows 7 and right click on the microphone in. It will give you an option to ‘Monitor this input using the headphones’ - which will allow you to listen to anything coming into the microphone socket through the headphone socket on the front on my PC.
In hypercam, set the sound to record from the default input device, set the frame rate to 10/10
Record using the ‘select window to record from’ option, select the game window, and use the F2 button to start and stop the recording.
The video will be output in AVI format, but you can transcode or convert it into a quicktime MOV file for editing in iMovie, or you can use windows movie editor, which is free and quite good.