Some DV cameras (I presume you're talking DV rather than digital still) have a time-lapse function: AFAIR my TRV900 can be programmed to record for two seconds at a fixed interval, then you'd have to go through and cut up the video file to extract a single frame from each two second clip and stick them all together. I think the mechanics of the video mechanism prevent them from recording single frames easily.
With film cameras I believe you get an external controller which will just take one frame at a fixed interval, so that eliminates the editing hassle.
