I recommend this free software for you, Shiznit.
http://www.datakam.com/download/
It's a Russian site which I found from reading reviews on Amazon but it seems perfectly safe. The software is far better than the package that comes with the Eprance. You can vary the playback speed and, if you have several journeys on a card, it will group them for you. For example, the other day we went to Bristol, stayed there for a couple of hours and bought fuel on the return journey. It recognised that as 2 trips, assuming the fuel stop was part of the return journey and not a separate trip. It also calculated the miles travelled for each journey and the time it took (bearing in mind I bought the model with GPS).
This software will work with other makes of dashcam too.