DVD to SVCD question

I am quite new when it comes to converting dvd to other formats, but I just recently tried to convert a dvd to svcd. I used all of the standard options as listed in the guide, aside from adding chapters at about 10 minute intervals. The problem I am experiencing is that upon playback, the picture flutters very subtly up and down or side to side. I guess I’d call it jitter. The picture looks fine, and audio syncs up fine as well, the picture just moves slightly. I’m using elecard 2.1 for playback, could this be a part of the problem?
Thanks for any help.