question about video playback please

[DaRuSsIaMaN]

I'm using a camera to record avi files. When I play the file in any media player, will it always play at precisely the same speed as how the events happened in real life? I need to know exactly how much time passes during the event(s), that's why I'm asking. Help much appreciated!

Thanks

P.S. Sorry, I tried asking this question before but my thread got deleted during the recent forum server troubles.