Hi Kenda,
You can now set the capture program to always record and keep the last minutes of play. This is adjustable from 1mn to 60mn in 1mn increment. When Pre-roll is set, a Save button becomes available. Pressing on Save (or the corresponding function key) will save thepre-roll as a clip and starts a new one.
If you click on "Start Recording" while you are in pre-roll mode, GCHD will start capturing until you click on Stop recording. The pre-roll clip is that was saved when you clicked on "Start Recording" is seamlessly appended to the recording.
For example, if you have set Pre-roll to 5mn, and click on Start Recording at minute 20 of your game play, and press Stop at minute 50, you will get a clip that starts at minute 15 (minute 20 minus 5) and finishes at minute 50, for a total length of 35 minutes (50-20+5)