They have returned!
Now, I've made a video
http://www.youtube.com/watch?v=s3mO3RKggtQ
Unfortunately, the video is not the best quality, but that's all I have.
Probably it's the mother and it's little one. I was sitting on the ground, the larger one passed me by by only 10 centimeters. There could probably be a third one around, that's why I'm "looking" in the dark so often with the camera in the beginning of the movie. Unfortunately, the sound quality is not the best either, but you can hear the snorting noise with the smaller one cryes for it's mother, and the squeeking replies of the mother.
In the end, the two hedgies went on their ways. It's funny to look at the mother in the end, how she makes sure I mean no harm to her little one, and then leaves on the very same route where the other one left.