Were you going RCA video out?
Yes. All three of these devices were pre-HDMI and used S-Video output.
But most of the other video standards, like RCA, composite, S-video and such are 1-way. It would be *impossible* for the system to "know" that the TV doesn't match.
The Apex would scale 576i at 50 Hz to 480i at 60 Hz. The others just threw up their hands and gave up.
I've never had any DVD played on a computer (or by association, out the computer's video out) that cared about PAL/NTSC.
From roughly 1987 to 2006, it was rare to connect a PC to a TV-sized monitor. PCs were for desks, and "consumer electronics" devices were for the living room, and conventional wisdom was that never the twain shall meet. SDTVs of that era that couldn't display the VGA or DVI signals coming from a computer, unlike now where most TVs have VGA and HDMI inputs respectively, and one had to buy an obscure scan converter (or a desktop PC video card with a built-in scan converter) to convert the signals.