It probably does not actually convert PAL to NTSC. Most likely meant to be used with a multi-system TV.

Converting PAL to NTSC is more involved than a line doubler, and you might know how expensive those things were. It is also difficult the other way around. Different scan rates and color subcarrier frequencies, and that phase shift deal in PAL that makes the tint (phase) control unnecessary.

Now, there should be cheaper convertors. There's probably a chip for that. (to the tune of "there's an app for that") Also, there are PC cards for video capture, I am sure there are PAL versions. After that, there are NTSC adapters for the video coming out of the PC. This would work. Or he could just burn a DVD and that would work as long as the software does not mark it anything other than region one. (NTSC)