Today not many camcorder do this for a very simple reason. That date and time is in the data area of the content so the player software can read and show it by turning it on or off. There is no need for it the be burnt into the video and lose what would be under the text.
Some will want other wise but the player software can be changed to accomplish the final goal.
Im wondering how to record new movies with the time and date present in the bottom of each movies. I cant seem to find the place to configure it. Shouldnt it be possible on all camcorders?
Problem is I have quite a few recordings of my children and I want to be able to see the date recorded.