zoom function on Pioneer DVR-550H or 650H HDD recorder

Quick question to anyone who owns or has used either the DVR-550H or 650H:

Can they zoom on video?

The online PDF manual (the Europe manual - there isn't one on the Pioneer Canada website) says they can zoom on JPEG photos in the Photo Viewer, but no mention of zooming on video. Also, I recently tried a Sony RDR HX750/HX950, which I suspect might be essentially the same machine internally, and these can't zoom on video, only JPEG photos. ALl DVD players/recorders I've used in the past, even cheap ones, can zoom on video.

I didn't know that some TVs have built-in zoom. My current tube TV can't, though I will be getting a larger LCD eventually. Zoom is such a basic feature that every player/recorder should have it, I don't get it, especially in one costing $500 ($450 on sale).