AFAIK, this feature can only work if you actually keep the physical disk in the tray. Our inexpensive JVC DVD/VCR combo has this feature, as does my LG portable DVD player.
There may be PC-based software to mark viewing points when watching on a PC drive, but I don't have any experience with this sort of feature on a standlone DVD unit.
I'm all ears if someone know more about these type of features.
If while watch a DVD on my DVD player I get sleepy and stop the DVD and take the DVD out of the machine, and then later put it back in, how can I get back to the point that I stopped the DVD? Thank you. user470