Check out the manual page for Recroding and Exporting: http://www.inklen.com/mixemergency/manual/recordingexporting/ MixEmergency doesn't actually record any video when it is recording (recording video would require: 1) capturing video from the graphics card, 2) compressing the video to a video coded, which is a very CPU intensive task, and 3) saving a large amount of data to disk - all of which would put a large strain on your computer, which isn't something you want when performing in a live environment). Instead, MixEmergency simply records your audio (which isn't a huge amount of data when compared to video) and what is currently happening in MixEmergency (so, a very small amount of data - e.g. the dj loaded a track, and it is playing at position 32 seconds, and the crossfader is faded to the right, etc), which is what that other file is. To turn this into a video, MixEmergency then needs to load this file and run it through MixEmergency and then turn the output of that into a video file - which is what it does in the export process. There are many advantages to doing it this way, one of which is that when you record from your screen (as screen capture applications do) you don't get a nice constant frame rate - which you will notice if you look for it in a lot of screen captured video. Often it will capture 10 frames per second, and then at other times it might capture 30. With our system you can set the frame rate before you export, and then it will interpolate the data that was recorded to produce the correct frame for the correct time and at a constant frame rate. There are many more advantages.... but I think I've answered your question, haha, so I'll stop here.
